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 37 of 46
- A. jellyfish
- B. tapeworm
- C. liver fluke
- D. roundworm
Explanation: A complete digestive system is characterized by a digestive tract that has two separate openings: a mouth for ingestion and an anus for…
Correct answer: roundworm- A. have separate sexes
- B. respire through lungs
- C. lay eggs with soft and leathery shells
- D. cannot control their body temperature.
Explanation: In this question, the key difference between amphibians and reptiles is their ability to control body temperature.
Correct answer: cannot control their body temperature.- A. are found in water.
- B. have the ability to regenerate.
- C. demonstrate division of labour.
- D. show cellular grade of organisation.
Explanation: Poriferans are classified into kingdom parazoa because they lack formation of true tissues and have cellular grade of organizations.
Correct answer: show cellular grade of organisation.- A. A. Cartilaginous endoskeleton, no jaws
- B. B. Bony endoskeleton, jaws present
- C. C. Cartilaginous endoskeleton, jaws present
- D. D. Bony endoskeleton, no jaws
Explanation: Lampreys are a type of jawless fish known as agnathans. They have a cartilaginous endoskeleton, meaning their internal skeleton is made of…
Correct answer: A. Cartilaginous endoskeleton, no jaws- A. Porifera
- B. Protozoa
- C. Coelenterata
- D. Platyhelminthes
Explanation: Cephalisation refers to the evolutionary trend of the development of a head region where nervous tissue becomes concentrated, forming a…
Correct answer: Platyhelminthes- A. Bilaterally Symmetrical, Asymmetrical
- B. Bilaterally Symmetrical, Bilaterally Symmetrical
- C. Radially Symmetrical, Bilaterally Symmetrical
- D. Asymmetrical, Radially Symmetrical
Explanation: Molluscs are a diverse group of animals with various body plans. Bilateral symmetry means the body can be divided into mirror-image halves…
Correct answer: Bilaterally Symmetrical, Bilaterally Symmetrical- A. Insecta
- B. Crustacea
- C. Arachnida
- D. Myriapoda
Explanation: The phylum Arthropoda is divided into several classes, each with unique characteristics.
Correct answer: Arachnida- A. I only
- B. III only
- C. I and II
- D. II and III
Explanation: In the phylum Mollusca, the class Cephalopoda, which includes organisms such as octopuses and squids, is unique for having a closed…
Correct answer: III only- A. Amniotic eggs
- B. Moveable eyelids
- C. Joined jaw bones
- D. Three chambered heart
Explanation: Amniotic eggs that can withstand dessication allowed reptiles to reproduce on land and lead to successful inhabitation of land.
Correct answer: Amniotic eggs- A. Body is covered by feathers
- B. Eggs are protected by shells
- C. Bones are hollow and light in weight
- D. Anterior limbs are modified into wings
Explanation: The correct answer is (Option B) that the protection of eggs by shells is not a flight adaptation in birds.The primary function of…
Correct answer: Eggs are protected by shells- A. Webbed feet
- B. Protruding eyes
- C. Longer legs for hopping
- D. Stout and chubby body shape
Explanation: Specimen I, identified as a toad, typically exhibits a stout and chubby body shape.
Correct answer: Stout and chubby body shape- A. Hydra
- B. Star fish
- C. Jelly fish
- D. Brittle star
Explanation: Brittle star has thin, slender arms attached to a distinct central disc. The specimen given is a brittle star. So option D is correct.
Correct answer: Brittle star- A. Hydra
- B. Amoeba
- C. Planaria
- D. Cockroach
Explanation: The correct answer is the cockroach. Cockroaches possess a well-developed digestive system with a mouth, esophagus, crop, gizzard…
Correct answer: Cockroach- A. Lice
- B. Ticks
- C. Leech
- D. Tapeworm
Explanation: Tapeworms are classified as endoparasites because they reside within the internal organs, specifically the intestines, of their host…
Correct answer: Tapeworm- A. Triploblastic coelomate
- B. Diploblastic acoelomate
- C. Triploblastic acoelomate
- D. Triploblastic pseudocoelomate
Explanation: It's triploblastic, as all three germ layers are present and pseudoceolomate.
Correct answer: Triploblastic pseudocoelomate- A. Flatworm
- B. Pinworm
- C. Earthworm
- D. Hookworm
Explanation: The correct answer is the earthworm. Earthworms are annelids, which are known to have a closed circulatory system where the blood is…
Correct answer: Earthworm- A. Planaria
- B. Tapeworm
- C. Liver fluke
- D. Blood fluke
Explanation: The correct answer is Planaria. Planaria are free-living, non-parasitic flatworms commonly found in freshwater environments.
Correct answer: Planaria- A. Planaria
- B. Cockroach
- C. Earthworm
- D. Roundworm
Explanation: The correct answer is Planaria. Planaria are flatworms with a digestive system that consists of a single opening, known as a…
Correct answer: Planaria- A. Coelom lined by mesoderm
- B. Mouth and anus as two body openings
- C. A mesodermal layer that forms muscles
- D. A gastrovascular cavity with one opening only
Explanation: Diploblastic animals, like cnidarians, have two primary germ layers: ectoderm and endoderm.
Correct answer: A gastrovascular cavity with one opening only- A. Lack parapodia and setae
- B. Lack parapodia and have few setae per segment
- C. Bear a pair of parapodia with many setae in each segment
- D. Bear two pairs of parapodia with few setae in each segment
Explanation: Polychaetes, also known as bristle worms, are a class of annelid worms known for their distinct anatomical feature, each body segment…
Correct answer: Bear a pair of parapodia with many setae in each segment