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 26 of 46
- A. It has suckers and tentacles
- B. It has a soft body covered by a shell
- C. A shell, A muscular foot, And a mantle
- D. It has a soft, Segmented body with a head and a foot
Explanation: Like their clam and snail relatives, cephalopods possess typical molluscan features: a shell, a muscular foot, and a mantle.
Correct answer: A shell, A muscular foot, And a mantle- A. Macrophage
- B. Ovum
- C. Granule cell
- D. None of these
Explanation: Explanation for this question will be added soon.
Correct answer: Ovum- A. Presence of suckers and hooks
- B. Asexual reproduction by fission
- C. The presence of mesoderm in embryonic stages
- D. All of the above options are correct
Explanation: Option A is correct since it is the best answer. Tapeworms are acoelomates that have mesoderm divided by fission but the question asks…
Correct answer: Presence of suckers and hooks- A. They do not have an amniotic sac in their lungs
- B. They breathe through their lungs only
- C. They are cold-blooded
- D. They have a four-chambered heart
Explanation: Reptiles breathe through their lungs as they have adapted to live completely dry, on land whereas amphibians breathe through their lungs…
Correct answer: They breathe through their lungs only- A. Urochordates
- B. Chordates
- C. Vertebrates
- D. Cephalochordates
Explanation: All animals belonging to Phylum Chordata have three things in common which are as followed: 1: Notochord 2: A dorsal hollow nerve cord 3…
Correct answer: Cephalochordates- A. They are both acoelomates
- B. They are both triploblastic
- C. They both show bilateral symmetry
- D. They are both worms
- E. Options B, C and D are correct
Explanation: Flatworms belong to the phylum Platyhelminthes while roundworms belong to the phylum Nematoda.
Correct answer: Options B, C and D are correct- A. Gastropods
- B. Bivalves
- C. Cephalopods
- D. None of the above
Explanation: Option B is correct as both have an external covering that is a two-part hinged shell that contains a soft body which is characteristic to…
Correct answer: Bivalves- A. Osculum
- B. Ostia
- C. Operculum
- D. None of the above
Explanation: Ostia are small openings or pores in the body wall of certain animals, commonly found in sponges.
Correct answer: Ostia- A. Ectoderm
- B. Endoderm
- C. Uterus
- D. Mesenchyme
Explanation: Choanocytes are cells of the mesenchyme, so fertilization occurs there.
Correct answer: Mesenchyme- A. Trout
- B. Sea horse
- C. Shark
- D. Tuna
Explanation: Sharks have skeleton made of cartilage and thus are not called "bony" fish. It is part of the chondrichthyes class of fishes.
Correct answer: Shark- A. Duckbill platypus
- B. Spiny anteater
- C. Wolves
- D. Both A and B
Explanation: Monotremes are group of animals that lay eggs, and thus act as connecting feature between both mammals and reptiles.
Correct answer: Both A and B- A. Perch
- B. Plaice
- C. Catfish
- D. Dogfish
Explanation: Dogfish is included in Chondrichthyes; it has a cartilaginous skeleton.
Correct answer: Dogfish- A. Obelia
- B. Jellyfish
- C. Hydra
- D. Sea anemone
Explanation: Option C is correct since hydra only exhibits asexual reproduction by budding.
Correct answer: Hydra- A. Lamprey
- B. Perch
- C. Plaice
- D. Dipnoi
Explanation: Option D is correct since the group, Dipnoi owes its name from the presence of two internal nostrils.
Correct answer: Dipnoi- A. Spiral and determinate
- B. Spiral and indeterminate
- C. Radial and determinate
- D. Radial and indeterminate
Explanation: If a blastomere is capable of producing a complete embryo, then the cleavage would be considered indeterminate.
Correct answer: Radial and indeterminate- A. Nephridia
- B. Flame cells
- C. Malpighian tubules
- D. Nephrons
Explanation: Platyhelminthes, also known as flatworms, do not have a true excretory system with specialized cells.
Correct answer: Flame cells- A. Digestive cavity
- B. Body cavity
- C. Transporting cavity
- D. All of these
Explanation: The enteron is the space which acts as the body cavity for all general functions.
Correct answer: All of these- A. Obelia
- B. Jelly fish
- C. Hydra
- D. Sea anemone
Explanation: Alteration of generation refers to the alteration between the methods of reproduction, from sexual to asexual.
Correct answer: Hydra- A. Ectodermal
- B. Mesodermal
- C. Endodermal
- D. None of these
Explanation: Option B is correct since the sperm and egg cells are produced from the germs cells- spermatozoa and oogonium present inside the 'testes'…
Correct answer: Mesodermal- A. Nematods
- B. Arthropods
- C. Molluscs
- D. None of these
Explanation: Option B is correct since it is believed that 'arthropods' and 'annelids' have a common origin as they both have appendages, a segmented…
Correct answer: Arthropods