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 33 of 46
- A. Found between body wall and gut
- B. Fluid filled
- C. Lined by mesoderm
- D. Bound internally by cuticle of intestine
Explanation: Coelom is internally lined by visceral layer of mesoderm. In pseudocoelomates body cavity is internally bound by cuticle of intestine.
Correct answer: Bound internally by cuticle of intestine- A. Coelom
- B. Mesoderm
- C. Special transport system
- D. Coelomic fluid
Explanation: Acoelomates are triploblastic animals in which all the three germinal layers ectoderm. mesoderm and endoderm are present.
Correct answer: Mesoderm- A. Fasciola hepatica
- B. Taenia solium
- C. Enterobius vermicularis
- D. Aurelia aurita
Explanation: Enterobius vermicularis commonly known as pinworm is cosmopolitan but more common in Europe and America.
Correct answer: Enterobius vermicularis- A. Nephridiopore
- B. Nephrostome
- C. Metanephridia
- D. Nephropore
Explanation: Nephronstome is the internal opening of nephridia, serving as the entry point for waste and fluids to enter the excretory system.
Correct answer: Nephrostome- A. Dead matter present in an organism
- B. Dead animals and plants
- C. Dead plant matter only
- D. Living animals only
Explanation: Scavengers are those animals that feed on dead animals and plants e.g. Drosophila and Vulture.
Correct answer: Dead animals and plants- A. Porifera
- B. Cnidaria
- C. Mollusca
- D. Echinodermata
Explanation: The echinoderms are exclusively marine.There are over 5,000 known species of echinoderms.
Correct answer: Echinodermata- A. Radial canal
- B. Ampulla
- C. Ostla
- D. Madreporite
Explanation: The madreporite is a sieve-like, porous plate found on the aboral surface (the side opposite the mouth) of echinoderms such as starfish.It…
Correct answer: Madreporite- A. Taenia solium
- B. Ascaris lumbricoides
- C. Schistosoma
- D. Fasciola hepatica
Explanation: Ascaris worms inhabit the lumen of the small intestine of human and pig.
Correct answer: Ascaris lumbricoides- A. Arachnoids
- B. Crustaceans
- C. Insects
- D. Myriapods
Explanation: In insects, the head bears a pair of antennae, which serve as important sensory organs for detecting smell, touch, and vibrations, and…
Correct answer: Insects- A. Reptiles
- B. Amphibian
- C. Chondrichthyes
- D. Mammals
Explanation: The lower Jaw of mammals consists of only one bone, the dentary, and the jaw hinge connects the dentary to the squamosal (flat) part of…
Correct answer: Mammals- A. Parazoa
- B. Porifera
- C. Protozoa
- D. Eumetazoa
Explanation: The correct answer is Eumetazoa. Eumetazoa encompasses animals with true tissues and organized body structures, which aligns with the…
Correct answer: Eumetazoa- A. Flame cells
- B. Metanephridium
- C. Malpighian tubules
- D. Kidneys
Explanation: Flame cells, also known as protonephridia, are the excretory structures found in Platyhelminthes.
Correct answer: Flame cells- A. Small intestine
- B. Large intestine
- C. Rectum
- D. Appendix
Explanation: Ascaris is an endoparasitic roundworm that primarily resides in the small intestine of its host. It is known as an intestinal parasite.
Correct answer: Small intestine- A. Presence of feathers
- B. Presence of gills
- C. Beak
- D. Sternum
Explanation: Gills are not present in birds.Birds are terrestrial and aerial vertebrates that breathe through lungs, not gills.
Correct answer: Presence of gills- A. Paired cerebral Hemispheres
- B. Nucleated red blood cells
- C. Hepatic portal system
- D. Presence of endocrine tissues
Explanation: Frogs have nucleated red blood cells (RBCs), whereas humans have non-nucleated RBCs.
Correct answer: Nucleated red blood cells- A. Eumetazoa
- B. Coelomata
- C. Pseudocoelomata
- D. Acoelomata
Explanation: Acoelomates are animals that lack a true body cavity called a coelom. Unlike animals with a coelom (coelomates) or a pseudocoelom…
Correct answer: Acoelomata- A. Aschelminthes (Nematoda)
- B. Mollusca
- C. Annelida
- D. Porifera
Explanation: Aschelminthes, also known as Nematoda, is a phylum of invertebrates that includes roundworms.
Correct answer: Aschelminthes (Nematoda)- A. Cnidaria
- B. Round worms
- C. Flat worms
- D. Earth worms
Explanation: Nematodes belong to the phylum Nematoda, and they are characterized by having a pseudocoelom, which is a fluid-filled body cavity that is…
Correct answer: Round worms- A. Porifera
- B. Annelida
- C. Cnidaria
- D. Arthropoda
Explanation: Polymorphism is a characteristic found in members of the phylum Cnidaria.
Correct answer: Cnidaria- A. Mollusca
- B. Annelida
- C. Cnidaria
- D. Arthropoda
Explanation: Hydra is a genus of small, freshwater organisms belonging to the phylum Cnidaria.
Correct answer: Cnidaria