Free Kingdom Animalia MCQs with Answers
912 Kingdom Animalia MCQs from Biology, each with the correct answer and a written explanation of why it is correct. Free and unlimited, with no account needed.
Animals are multicellular, heterotrophic eukaryotes whose cells lack cell walls and chloroplasts, with specialised tissues in most groups. Coverage includes body symmetry, tissue layers, coelom, segmentation and levels of organisation, plus major phyla such as Porifera, Cnidaria, Platyhelminthes, Annelida, Arthropoda, Mollusca and Chordata.
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912 questions · page 27 of 46
- A. Porous walls
- B. Gastrovascular system
- C. Reproduction
- D. Folding of inner walls
Explanation: Canal system is also known as aquiferous system. The canal system of sponges helps in food acquisition, respiratory gas exchange and also…
Correct answer: Folding of inner walls- A. Arthropoda
- B. Cnidaria
- C. Annelida
- D. Mollusca
Explanation: Nephridia are the excretory organs present in annelids such as earthworm.
Correct answer: Annelida- A. Ventral nerve cord
- B. Dorsal nerve cord
- C. Lateral nerve cord
- D. All of these
Explanation: d) All of these, Explanation: The correct answer is d) All of these. Nematodes' nervous system consists of a ventral nerve cord, lateral…
Correct answer: All of these- A. Annelida
- B. Coelenterates
- C. Echinodermata
- D. Platyhelminthes
Explanation: Correct Option:D This option is correct because flame cells are the specialized cells found in platyhelminthes including flatworm rotifer…
Correct answer: Platyhelminthes- A. Excretory
- B. Nervous
- C. Transport
- D. Both A and B
Explanation: Acoelomates commonly possess a simple digestive tract, nervous system, and excretory system.
Correct answer: Both A and B- A. Arachnids
- B. Insects
- C. Crustaceans
- D. All of these options are correct
Explanation: The term "carapace" refers to a hard, protective outer shell or plate that covers the body of some arthropods.
Correct answer: Crustaceans- A. Chlorenchyma
- B. Mesoderm
- C. Sclerenchyma
- D. Mesenchyme
Explanation: Mesenchyme is non-cellular in animals in most cases. Mesenchyme is embryonic connective tissue that is made up of loosely arranged…
Correct answer: Mesenchyme- A. Porifera
- B. Arthropoda
- C. Chordata
- D. Mollusca
Explanation: Molluscs are the second largest phylum of invertebrates after arthropods.
Correct answer: Mollusca- A. Penguin
- B. Bat
- C. Whales
- D. Elephant
Explanation: Penguins are oviparous, which means they lay eggs. Penguins lay eggs and incubating them.
Correct answer: Penguin- A. Spiral and determinate
- B. Spiral and indeterminate
- C. Radial and determinate
- D. Radial and indeterminate
Explanation: In some cases, blastomeres produce a complete embryo. The cleavage will be radial and indeterminate.
Correct answer: Radial and indeterminate531. In most triploblastic organisms, after embryonic development, the three layers are represented as?
- A. Their functions in the body
- B. Structures associated with them
- C. Separate layers of cells
- D. Structures formed from them
Explanation: Option A is wrong because, in triploblastic animals, the three layers represent the structures formed from them instead of separate layers…
Correct answer: Structures formed from them- A. Amphibians
- B. Reptiles
- C. Fish
- D. None of the above options are correct
Explanation: Hemolymph is a fluid, analogous to the blood in vertebrates, that circulates in the interior of the arthropod (invertebrate) body…
Correct answer: None of the above options are correct- A. Presence of true coelom and metamerism
- B. Presence of true coelom but the absence of metamerism
- C. Absence of true coelom but the presence of metamerism
- D. Absence of true coelom and metamerism
Explanation: Ascaris belongs to phylum Aschelminthes. It lacks a true coelom, possesses pseudocoelom and body is not metamerically segmented.
Correct answer: Absence of true coelom and metamerism- A. Molluscs
- B. Echinoderms
- C. Flatworms
- D. Sponges
Explanation: Echinoderms exhibit both radial and bilateral symmetry. During larval stages, echinoderms have bilateral symmetry whereas they have…
Correct answer: Echinoderms- A. Chordata
- B. Annelida
- C. Hemichordata
- D. Mollusca
Explanation: The Saccoglossus, which is also commonly known as the acorn worm, belongs to the phylum hemichordate.
Correct answer: Hemichordata- A. Ears
- B. Intellectual capability
- C. Diaphragm
- D. Limbs
Explanation: There are multiple features unique to mammals, like malleus, incus, and stapes in the ear, mammary glands, hair, and a diaphragm…
Correct answer: Diaphragm- A. Ascaris lumbricoides
- B. Lumbricus terrestris
- C. Pheretima posthuma
- D. Hirudo Medicinalis
Explanation: Ascaris lumbircoides is a large roundworm parasite that can infect both humans and pigs.
Correct answer: Ascaris lumbricoides- A. Tapeworm
- B. Planaria
- C. Liver fluke
- D. Earthworm
Explanation: Fasciola is a type of parasitic flatworm that is commonly known as the liver fluke.
Correct answer: Liver fluke539. Ascaris is
- A. Diploblastic
- B. Triploblastic
- C. Haploid
- D. Acoelomate
Explanation: Ascaris is a genus of parasitic nematode worms known as the "small intestinal roundworms" that can infect the human small intestine.
Correct answer: Triploblastic- A. Nervous System
- B. Alimentary canal lining
- C. Muscular and skeletal system
- D. Mouth
Explanation: During development, the mesoderm layer gives rise to the muscular system, skeletal system, circulatory system, and other organs such as…
Correct answer: Muscular and skeletal system