Diversity Among Animals Test 9

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Question 1:

Which era was dominated by dinosaurs?





Topic: Geological Time Scale and Dinosaur Evolution

Correct Answer: B) Mesozoic period

Detailed Hints:
  • Understanding the era of dinosaur predominance requires knowledge of the geological time scale.
  • The Jurassic period, Mesozoic era, and Cenozoic era are all significant geological time periods, but dinosaurs were most dominant during the Mesozoic era.
  • The Mesozoic era, often referred to as the "Age of Reptiles," is recognized for the evolution and dominance of dinosaurs.
  • Hence, the correct answer is B, "Mesozoic period."

Question 2:

In which of the following creatures, other than mammals, could you find a diaphragm?





Topic: Comparative Anatomy and Diaphragmatic Structures

Correct Answer: B) Crocodiles

Detailed Hints:
  • Diaphragms are predominantly found in mammals, assisting in respiration.
  • However, among the options provided, only in crocodiles is a muscular structure similar to the mammalian diaphragm found.
  • This structure plays a key role in the unique method crocodiles use to breathe.
  • Hence, the correct answer is B, "Crocodiles".

Question 3:

Which of the following amphibians lacks limbs?





Topic: Amphibian Diversity and Adaptations

Correct Answer: A) Caecilian

Detailed Hints:
  • Amphibians exhibit a wide range of diversity and evolutionary adaptations.
  • Among the options, the Caecilian is a unique amphibian that is limbless.
  • This limbless nature has allowed Caecilians to adapt to a burrowing lifestyle.
  • Hence, the correct answer is A, "Caecilian".

Question 4:

What kind of blood does the heart of a fish pump?





Topic: Fish Physiology and Circulatory System

Correct Answer: D) Impure blood to the gills

Detailed Hints:
  • Understanding fish physiology requires knowledge of the circulatory system and how the heart functions.
  • In fishes, the heart pumps deoxygenated (or "impure") blood to the gills.
  • Gills are the primary organ for gas exchange, where the 'impure' blood gets oxygenated.
  • Hence, the correct answer is D, "Impure blood to the gills".

Question 5:

What is the common name for 'Tachyglossus'?





Topic: Mammalian Species and their Scientific Names

Correct Answer: B) Spiny anteater

Detailed Hints:
  • Tachyglossus is the scientific name for a particular species of mammal.
  • It is crucial to be familiar with the common names associated with these scientific terms.
  • In this context, 'Tachyglossus' refers to the Spiny anteater.
  • Therefore, the correct answer is B, "Spiny anteater".

Question 6:

Onchophora is a group of animals that exhibit characteristics of arthropods and which other group?





Topic: Animal Kingdom and Species Classification

Correct Answer: B) Annelids

Detailed Hints:
  • Onchophora is an intriguing group of animals that exhibit characteristics of multiple groups.
  • They possess traits of arthropods and another group amongst the options provided.
  • The group that Onchophora share characteristics with is Annelids.
  • Hence, the correct answer is B, "Annelids".

Question 7:

Which of the following possesses an operculum?





Topic: Fish Anatomy and Operculum

Correct Answer: D) None of these

Detailed Hints:
  • An operculum is a significant anatomical feature in certain species.
  • It is not found in every aquatic creature. Among the options provided, none have an operculum.
  • An operculum is primarily found in the class Osteichthyes (bony fishes), which is not represented in the options.
  • Therefore, the correct answer is D, "None of these".

MCQs 8:

Identify the warm-blooded animal among the following options:





Topic: Animal Physiology and Thermoregulation

Correct Answer: B) Mole

Detailed Hint:
  • Warm-blooded animals are those which maintain a consistent body temperature, regardless of the environment.
  • Among the given options, only the Mole is a mammal, known for being warm-blooded.
  • Neither sea horses nor sea urchins are warm-blooded.
  • Therefore, the correct answer is B, "Mole".

MCQs 9:

Which of the following undergoes hemimetabolous development?





Topic: Insect Development and Metamorphosis

Correct Answer: A) Wasps

Detailed Hint:
  • Hemimetabolous development, or incomplete metamorphosis, is a unique life cycle seen in certain insects.
  • The provided options include various insects, but only wasps experience hemimetabolous development.
  • Bees and butterflies undergo complete metamorphosis, not hemimetabolous development.
  • Hence, the correct answer is A, "Wasps".

MCQs 10:

In which of the following creatures would you find Haemocyanin?





Topic: Animal Physiology and Respiratory Pigments

Correct Answer: D) Cuttle fish

Detailed Hint:
  • Haemocyanin is a copper-containing respiratory pigment found in certain invertebrates.
  • It is not present in all organisms. Of the options presented, only the Cuttlefish, a type of mollusk, contains Haemocyanin.
  • The other options listed are not known to contain this pigment.
  • Hence, the correct answer is D, "Cuttle fish".

MCQs 11:

Which of these creatures has book lungs for respiration?





Topic: Animal Physiology and Respiratory Structures

Correct Answer: D) Spiders

Detailed Hint:
  • Book lungs are a unique respiratory structure found in a specific group of arthropods.
  • They are named thus due to their appearance, which resembles the pages of a book.
  • Among the provided options, only Spiders, which belong to the group Arachnids, possess book lungs.
  • Thus, the correct answer is D, "Spiders".

MCQs 12:

Identify the animal group that is strictly marine.





Topic: Animal Kingdom and Habitat Classification

Correct Answer: C) Echinodermata

Detailed Hint:
  • Each animal group has a specific habitat range.
  • While some can inhabit both marine and freshwater environments, others are exclusive to one or the other.
  • Echinoderms are an example of a group that is exclusively marine.
  • Therefore, the correct answer is C, "Echinodermata".

MCQs 13:

Which is the most populous class within the chordates?





Topic: Animal Kingdom and Species Count

Correct Answer: C) Fishes

Detailed Hint:
  • The chordates are a vast phylum with several classes.
  • Each class has a diverse range of species, but one class stands out as having the highest count.
  • The class with the largest number of species in this category is the Fishes.
  • Therefore, the correct answer is C, "Fishes".

MCQs 14:

Which of the following organisms is also referred to as the 'sea lancelet'?





Topic: Animal Kingdom and Species Names

Correct Answer: C) Branchiostoma

Detailed Hint:
  • The 'sea lancelet' is a common name for a specific organism within the chordate phylum.
  • This nickname is based on its lance-like shape and marine habitat.
  • Among the options provided, only Branchiostoma, also known as Amphioxus, is referred to as the 'sea lancelet'.
  • Therefore, the correct answer is C, "Branchiostoma".

Question 15:

In which of the following is a notochord present?





Topic: Animal Physiology and Structural Characteristics

Correct Answer: B) Adult stage of cephalochordates

Detailed Hint:
  • The notochord is a distinguishing feature of chordates and is present at some stage in their development.
  • This structure is not found in all organisms. Among the options given, only the adult stage of cephalochordates, such as Branchiostoma, possess a notochord.
  • Acorn worms, on the other hand, do not have a notochord.
  • Thus, the correct answer is B, "Adult stage of cephalochordates".

Question 16:

Which of the following are considered lower chordates?





Topic: Animal Kingdom and Hierarchical Classification

Correct Answer: D) None of these

Detailed Hint:
  • The term 'lower chordates' is used to refer to certain groups within the chordate phylum.
  • These groups primarily include urochordates and cephalochordates, and not the more complex vertebrates.
  • Amphibians, reptiles, and fishes are all classes of vertebrates and, hence, are not considered lower chordates.
  • Therefore, the correct answer is D, "None of these".

Question 17:

What is the specific order of a Zebra?





Topic: Animal Kingdom and Taxonomic Classification

Correct Answer: C) Perissodactyla

Detailed Hint:
  • The classification of animals into orders is based on shared characteristics and evolutionary relationships.
  • Zebras share distinct traits with horses, such as odd-toed hoofs, which place them in the same order.
  • In the given options, only Perissodactyla corresponds to the order of Zebras and horses.
  • Hence, the correct answer is C, "Perissodactyla".

Question 18:

Which of the following organisms possesses a notochord?





Topic: Animal Physiology and Structural Features

Correct Answer: D) None of these

Detailed Hint:
  • The notochord is a key feature distinguishing chordates, present at some stage in their lifecycle.
  • Pinworms, Earthworms, and Acorn worms, being invertebrates, do not have notochords.
  • Thus, amongst the provided options, none possess a notochord.
  • The correct answer, therefore, is D, "None of these".

Question 19:

Which of the following characteristics is not associated with mammals?





Topic: Animal Kingdom and Mammalian Features

Correct Answer: D) Ten pairs of cranial nerves

Detailed Hint:
  • Mammals possess certain distinguishing characteristics that set them apart from other animal groups.
  • While anucleated RBCs, seven cervical vertebrae, and external ear pinna are common features among mammals, the number of cranial nerves varies.
  • Mammals typically have 12 pairs of cranial nerves, not 10.
  • Therefore, the correct answer is D, "Ten pairs of cranial nerves".

Question 20:

In which of the following are 5 to 7 pair of gills found?





Topic: Animal Physiology and Structural Features

Correct Answer: B) Chondrichthyes

Detailed Hint:
  • The number of gills varies among different animal classes.
  • Cyclostomes, such as lampreys and hagfish, typically possess 7 pairs, while Chondrichthyes, such as sharks, skates, and rays, have between 5 and 7 pairs.
  • Therefore, out of the options provided, Chondrichthyes is the correct answer.
  • Hence, the correct answer is B, "Chondrichthyes".

Question 21:

What is the body temperature range of the subclass prototheria (Monotremata)?





Topic: Animal Kingdom and Physiological Characteristics

Correct Answer: B) 25-28°C

Detailed Hint:
  • The subclass Prototheria, also known as Monotremata, includes unique mammals like platypus and echidnas that lay eggs.
  • These creatures have a lower body temperature than most mammals, typically ranging between 25 and 28 degrees Celsius.
  • Therefore, the correct answer is B, "25-28°C".

Question 22:

Which of the following is not segmented?





Topic: Animal Kingdom and Structural Characteristics

Correct Answer: B) Pinworm

Detailed Hints:
  • Segmentation is a key characteristic of some animal phyla but not all.
  • Earthworms, belonging to the phylum Annelida, have segmented bodies.
  • Tapeworms, although belonging to the Platyhelminthes, also exhibit segmentation.
  • However, Pinworms, categorized as roundworms, do not show segmentation.
  • Therefore, the correct response is B, "Pinworm".

Question 23:

Identify the hermaphroditic organism from the options below:





Topic: Animal Kingdom and Reproductive Characteristics

Correct Answer: D) None of these

Detailed Hints:
  • Hermaphroditism, the condition of possessing both male and female reproductive organs, is a characteristic of certain animal phyla, particularly Annelida and Platyhelminthes.
  • Nectrus, an example of an amphibian, does not display this trait.
  • Similarly, Sycon, also known as a sponge, does not display hermaphroditism.
  • Therefore, amongst the options provided, none are hermaphroditic, making D) 'None of these' the correct answer.

Question 24:

From which type of reptile did mammals primarily evolve?





Topic: Evolution and Animal Kingdom

Correct Answer: B) Varanope

Detailed Hints:
  • The evolution of animals over eons has led to the diverse range of species we see today.
  • Mammals are believed to have primarily evolved from a group of reptiles known as synapsids, with Varanope being a representative member.
  • Hence, among the choices available, the correct answer is B, "Varanope".

Question 25:

Which of the following does not possess a placenta?





Topic: Animal Kingdom and Reproductive Features

Correct Answer: B) Duck billed platypus

Detailed Hints:
  • The presence or absence of a placenta, an organ that facilitates nutrient exchange between mother and offspring, varies among mammals.
  • While the Koala has a poorly developed placenta, it is entirely absent in species like the Duck billed platypus and the spiny anteater.
  • Therefore, out of the options provided, the correct response is B, "Duck billed platypus".

Question 26:

Which respiratory pigment is found in Annelids?





Topic: Animal Kingdom and Physiological Properties

Correct Answer: C) Chlorocruorin

Detailed Hints:
  • Annelids, the segmented worms, possess various respiratory pigments to facilitate oxygen transport.
  • While some species utilize Hemocynin, Hemoerythrin, or Hemoglobin, the majority of Annelids typically contain Chlorocruorin as their primary respiratory pigment.
  • Hence, the correct answer is C, "Chlorocruorin".

Question 27:

Apart from the Berlin Museum, where else is a specimen of Archaeopteryx displayed?





Topic: Paleontology and Museum Exhibits

Correct Answer: D) None of these

Detailed Hints:
  • Archaeopteryx, a crucial link in the evolution from dinosaurs to birds, is a significant fossil with specimens displayed in various museums.
  • In addition to the Berlin Museum, another significant specimen is housed in the British Museum.
  • Therefore, out of the options provided, none are accurate, making D) 'None of these' the correct answer.

Question 28:

Which of the following does not have epidermal glands?





Topic: Animal Kingdom and Physiological Characteristics

Correct Answer: B) Reptiles

Detailed Hints:
  • Epidermal glands, present in the skin of many animals, play various roles from secreting sweat for thermoregulation to producing toxins for defense.
  • In the case of reptiles, however, these glands are absent, leaving their skin dry and rough.
  • Therefore, the correct response is B, "Reptiles".

Question 29:

In which marine organism can you find the Bipinnaria larva?





Topic: Animal Kingdom and Developmental Characteristics

Correct Answer: Sea urchin

Detailed Hints:
  • The Bipinnaria is a type of free-swimming marine larva.
  • It is characteristic of certain marine invertebrates that belong to the phylum Echinodermata, such as the sea urchin.
  • Therefore, of the options provided, the correct answer is C, "Sea urchin".

Question 30:

Which of the following organisms possesses a notochord?





Topic: Animal Kingdom and Anatomical Features

Correct Answer: Necturus

Detailed Hints:
  • The notochord is a flexible rod-shaped structure found in the embryonic stage of all chordates, including the Necturus, an amphibian.
  • It's not present in invertebrates like the earthworm or the crab.
  • Hence, among the provided options, the correct answer is C, "Necturus".

Question 31:

Green glands, used for excretion, are found in which of the following?





Topic: Animal Kingdom and Excretory System

Correct Answer: Both A and B

Detailed Hints:
  • Green glands, also known as coxal glands, are excretory organs found in some arthropods.
  • They are particularly associated with arachnids, such as spiders and scorpions.
  • Thus, the answer to the question is C, "Both A and B".

Question 32:

Which of these amphibians is tailed?





Topic: Animal Kingdom and Taxonomic Features

Correct Answer: Salamander

Detailed Hints:
  • Among the amphibians, some are categorized as tailed and some are tailless.
  • The distinctive trait of possessing a tail throughout life is seen in salamanders.
  • Therefore, the correct answer to the question is B, "Salamander".

Question 33:

Which of the following is not an Osteichthyes (bony fish)?





Topic: Animal Kingdom and Fish Classification

Correct Answer: Dog fish

Detailed Hints:
  • Osteichthyes are a taxonomic group of fish that have bony, rather than cartilaginous, skeletons.
  • Among the options provided, the dogfish, a type of shark, is a member of the Chondrichthyes (cartilaginous fish), not Osteichthyes.
  • Hence, the correct response is D, "Dog fish".

Question 34:

What kind of waste excretion is characteristic of reptiles?





Topic: Animal Kingdom and Excretory Mechanisms

Correct Answer: Uricotelic

Detailed Hints:
  • Animals vary in the type of nitrogenous waste they excrete, which can be ammonia (ammonotelic), urea (ureotelic), or uric acid (uricotelic).
  • In the case of reptiles, they excrete uric acid, a relatively non-toxic substance that can be eliminated with minimal water loss.
  • Therefore, the correct response is B, "Uricotelic".

Question 35:

During which geological time period did mammals become dominant?





Topic: Animal Kingdom and Evolutionary History

Correct Answer: Cenozoic

Detailed Hints:
  • Mammals are a group of vertebrates with a rich and complex evolutionary history.
  • While their ancestors, referred to as mammal-like reptiles, co-existed with dinosaurs during the Jurassic period, mammals did not become the dominant terrestrial vertebrates until the Cenozoic era.
  • Therefore, the correct answer is B, "Cenozoic".

Question 36:

In an octopus, the foot is modified into what form?





Topic: Animal Kingdom and Anatomical Adaptations

Correct Answer: D) Siphon

Detailed Hint:
  • In various invertebrates, such as mollusks, anatomical features evolve and modify to serve specific functions.
  • In octopuses, a class of cephalopods, the foot has evolved into a structure known as a siphon, which helps in locomotion and feeding.
  • Consequently, the correct answer is D, "Siphon".

Question 37:

Which of the following statements is not true about amphibians?





Topic: Animal Kingdom and Amphibian Characteristics

Correct Answer: D) Scales of the body

Detailed Hint:
  • Amphibians are a group of vertebrates exhibiting a wide range of characteristics.
  • While they display features such as toes without claws, a variable body temperature (poikilothermic), and the presence of ten pairs of cranial nerves, they do not have scales on their bodies.
  • Consequently, the incorrect statement is D, "Scales of the body".

Question 38:

In which of the following pair of organisms does extracellular digestion occur?





Topic: Animal Kingdom and Digestive Mechanisms

Correct Answer: B) Grasshopper and frog

Detailed Hint:
  • Digestion can be intracellular (within cells) or extracellular (in digestive system).
  • Among the listed pairs, the process of extracellular digestion is observed in both grasshoppers (an insect) and frogs (an amphibian).
  • Thus, the correct answer is B, "Grasshopper and frog".

Question 39:

In which group of animals did extraembryonic membranes first appear?





Topic: Animal Kingdom and Evolutionary Milestones

Correct Answer: A) Reptiles

Detailed Hint:
  • The development of extraembryonic membranes was a significant evolutionary milestone in the animal kingdom.
  • This adaptation first appeared in reptiles, enabling them to lay eggs in terrestrial environments.
  • Therefore, the correct answer is A, "Reptiles".

Question 40:

In which of the following fish has the mouth adapted for a suckling mode of nutrition?





Topic: Animal Kingdom and Dietary Adaptations

Correct Answer: A) Lamprey

Detailed Hint:
  • Different species of fish have evolved varied feeding adaptations based on their ecological niches.
  • Lampreys, belonging to the class Cyclostomata or Agnatha, have a mouth adapted for suckling mode of feeding.
  • Hence, the answer is A, "Lamprey".

Question 41:

Which of the following organisms contain creatinine phosphate?





Topic: Animal Kingdom and Biochemical Compounds

Correct Answer: C) Both A and B

Detailed Hint:
  • Creatinine phosphate is a compound found in various organisms, playing a crucial role in energy storage.
  • Among the options, both brittle stars (a type of echinoderm) and penguins (a bird species) contain creatinine phosphate.
  • Consequently, the correct answer is C, "Both A and B".

Question 42:

In which of the following does a single ovary and oviduct exist?





Topic: Animal Kingdom and Reproductive Systems

Correct Answer: B) Birds

Detailed Hint:
  • Various animal groups display distinct characteristics in their reproductive systems.
  • For birds, typically, only the left ovary and oviduct function, except for eagles, where both ovaries are operational.
  • Therefore, the correct answer is B, "Birds".

MCQs 43:

In which animal is the Planula larva found?





Topic: Animal Kingdom and Life Cycles

Correct Answer: C) Sea anemone

Detailed Hint:
  • Planula larva belongs to the Phylum Coelenterata.
  • Trochophore larva is found in the Phylum Annelida.
  • Glochidium larva is associated with the Phylum Mulluska.
  • Bipannaria larva is characteristic of the Phylum Echinodermata.
  • The Tornaria larva is part of the Subphylum Hemichordata.
  • The Tadpole larva is specific to frogs.

MCQs 44:

What organism can you find flame cells in?





Topic: Animal Kingdom and Excretory Mechanisms

Correct Answer: A) Tapeworm

Detailed Hint:
  • Flame cells are specialized excretory cells found in certain animal groups.
  • In the given options, flatworms such as tapeworms contain flame cells as part of their excretory system.
  • Pinworm is a type of roundworm and does not possess flame cells.
  • The correct answer is thus A, "Tapeworm".

MCQs 45:

Which of the organisms listed below exhibits radial symmetry?





Topic: Animal Kingdom and Body Symmetry

Correct Answer: B) Jelly fish

Detailed Hint:
  • Radial symmetry is a type of symmetry where body parts are arranged around a central axis, like slices of a pie.
  • Among the listed organisms, jellyfish, which belongs to the phylum Cnidaria, exhibit radial symmetry.
  • Cuttlefish, however, belong to the phylum Mollusca and display bilateral symmetry.
  • Therefore, the correct answer is B, "Jelly fish".

MCQs 46:

Which one of the following possesses a cloaca?





Topic: Animal Kingdom and Anatomical Features

Correct Answer: A) Penguin

Detailed Hint:
  • A cloaca is a common opening for the digestive, urinary, and reproductive systems in certain animal species.
  • Among the given options, penguins, who are unique among birds in laying eggs, possess a cloaca.
  • The correct answer is thus A, "Penguin".

MCQs 47:

To which of the following orders do bats belong?





Topic: Animal Kingdom and Classification

Correct Answer: C) Chiroptera

Detailed Hint:
  • Bats, as flying mammals, have unique classification in the animal kingdom.
  • The correct order for bats is Chiroptera, differing from rodents (Rodentia), cetaceans (Cetacea), and primates (Primates).
  • Therefore, the correct answer is C, "Chiroptera".

MCQs 48:

Which of the following animals possess a four-chambered heart?





Topic: Animal Kingdom and Circulatory Systems

Correct Answer: C) Crocodile

Detailed Hint:
  • The design of an animal's heart, including chamber number, varies across different species.
  • Among the given choices, only the crocodile has a four-chambered heart.
  • Thus, the correct answer is C, "Crocodile".

MCQs 49:

In which of the following are peristomical gills found?





Topic: Animal Kingdom and Respiration

Correct Answer: C) Sea urchin

Detailed Hint:
  • Different forms of marine life have various means of respiration, some of them being equipped with peristomical gills.
  • Among the given options, the sea urchin possesses peristomical gills.
  • So, the correct answer is C, "Sea urchin".

Question 50:

How are amphibians classified based on heat regulation?





Topic: Animal Kingdom and Temperature Regulation

Correct Answer: B) Poikilothermic

Detailed Hint:
  • The classification of animals based on their ability to regulate body temperature is a fundamental aspect of zoology.
  • Homeothermic animals can maintain a stable internal body temperature regardless of external influence, while Poikilothermic animals cannot.
  • Amphibians fall into the category of Poikilothermic animals.
  • Hence, the correct answer is B, "Poikilothermic".

Question 51:

Which of the following is not classified as a primate?





Topic: Animal Kingdom and Classification

Correct Answer: D) Dog

Detailed Hint:
  • Primates are a group of mammals that includes humans, monkeys, and chimpanzees.
  • They are characterized by their high brain development.
  • Dogs, however, belong to a different group, Canidae, and are not classified as primates.
  • Therefore, the correct answer is D, "Dog".

Question 52:

How many pairs of cranial nerves are present in mammals?





Topic: Animal Kingdom and Nervous System

Correct Answer: B) 12 pairs

Detailed Hint:
  • The nervous system of mammals includes a variety of nerves, including cranial nerves.
  • There are 12 pairs of cranial nerves in mammals, which are distinct from spinal nerves.
  • Thus, the correct answer is B, "12 pairs".

Question 53:

To which of the following orders does a whale belong?





Topic: Animal Kingdom and Classification

Correct Answer: B) Cetacea

Detailed Hint:
  • Whales, as marine mammals, fall under a unique order in the animal kingdom.
  • The correct order for whales is Cetacea, which is distinct from primates (Primata), bats (Chiroptera), and edentates (Edentate).
  • As such, the correct answer is B, "Cetacea".

Question 54:

In which period did the ancestors of mammals coexist with reptiles?





Topic: Animal Kingdom and Evolution

Correct Answer: B) Jurassic

Detailed Hint:
  • The timeline of evolution provides invaluable insights about the coexistence of various species over different geological periods.
  • The Jurassic period is known for the cohabitation of reptiles and mammal-like reptiles.
  • Therefore, the correct answer is B, "Jurassic".

Question 55:

Where is the pinworm found in the body?





Topic: Parasitology and Digestive System

Correct Answer: B) Large intestine

Detailed Hint:
  • Organisms like pinworms are known for their specific habitats within the host's anatomy.
  • In this case, the pinworm is found in the large intestine, unlike Ascaris lumbricoides, which is found in the small intestine.
  • Thus, the correct answer is B, "Large intestine".
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