FSc Part 1 Biology chapter 10: Kingdom Animalia MCQs with answers

By Team Megalecture · Updated 4 Nov 2026

24 exam-style questions on Kingdom Animalia, each with the answer and a short explanation. Ten of them are below to try. The chapter test draws ten fresh questions each time and is marked the moment you finish, with your score by topic.

24 questions · 2 topics · 10 per test

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What chapter 10 covers

Ten Kingdom Animalia questions with answers

Try each one, then open the answer. These ten stay the same; the test draws new ones every time.

1. Sharks differ from bony fishes in having

  1. A
    a swim bladder for buoyancy and gills under an operculum
  2. B
    a cartilaginous skeleton, placoid scales and no gill cover (operculum)
  3. C
    lungs, a three-chambered heart and a smooth moist skin
  4. D
    a bony skeleton, cycloid scales and a gill cover (operculum)
Show answer

Answer: B. Chondrichthyes have cartilage skeletons, placoid scales, exposed gill slits and no swim bladder. Bony fishes have an operculum and swim bladder.

2. Division of the body into a series of similar segments, as in the earthworm, is called

  1. A
    cephalisation
  2. B
    metamorphosis
  3. C
    metagenesis
  4. D
    metamerism
Show answer

Answer: D. Metameric segmentation is a key feature of annelids; each segment repeats parts such as nephridia and setae.

3. The collar cells (choanocytes) of sponges

  1. A
    produce a water current and trap food particles
  2. B
    form the outer protective layer of the sponge
  3. C
    secrete the spicules that support the body wall
  4. D
    sting small animals with coiled threads
Show answer

Answer: A. The flagella of choanocytes drive water through the canals, and their collars trap food particles.

4. Balanoglossus, the acorn worm, belongs to

  1. A
    Echinodermata
  2. B
    Hemichordata
  3. C
    Cephalochordata
  4. D
    Urochordata
Show answer

Answer: B. Balanoglossus has a proboscis, collar and trunk and pharyngeal gill slits; it is a hemichordate.

5. A body cavity that lies between the mesoderm and the endoderm and is not fully lined by mesoderm is a

  1. A
    pseudocoelom
  2. B
    gastrovascular cavity
  3. C
    haemocoel
  4. D
    true coelom
Show answer

Answer: A. A pseudocoelom, as in roundworms, is derived from the blastocoel and is not lined with mesoderm on the gut side.

6. A mollusc has a head surrounded by arms with suckers, a foot modified for jet propulsion and a well-developed eye. It belongs to the class

  1. A
    Cephalopoda, e.g. Sepia
  2. B
    Gastropoda, e.g. Pila (apple snail)
  3. C
    Polyplacophora, e.g. chiton
  4. D
    Pelecypoda, e.g. Unio (freshwater mussel)
Show answer

Answer: A. Cephalopods (Sepia, octopus, squid) have the foot modified into arms and a funnel for jet propulsion, and highly developed eyes. Gastropods crawl on a muscular foot and pelecypods are burrowing bivalves.

7. A rasping, tongue-like organ used for scraping food is found in most

  1. A
    echinoderms
  2. B
    annelids
  3. C
    molluscs
  4. D
    nematodes
Show answer

Answer: C. The radula is characteristic of molluscs (absent in bivalves). Molluscs also have a mantle and muscular foot.

8. Which annelid has no setae and secretes hirudin, an anticoagulant?

  1. A
    earthworm
  2. B
    Pheretima
  3. C
    Nereis
  4. D
    leech
Show answer

Answer: D. Leeches (Hirudinea) lack setae and have suckers; hirudin keeps the host's blood from clotting while they feed.

9. In Obelia an asexual polyp stage alternates with a free-swimming sexual medusa stage. This is called

  1. A
    regeneration
  2. B
    parthenogenesis
  3. C
    metamorphosis
  4. D
    metagenesis
Show answer

Answer: D. Metagenesis is the alternation of asexual polyp and sexual medusa generations in some cnidarians.

10. Taenia (tapeworm) has no mouth or digestive tract because it

  1. A
    feeds only as a larva and needs no food as an adult
  2. B
    sucks blood through its hooks and suckers
  3. C
    absorbs the host's digested food directly through its body wall
  4. D
    makes its own food using chlorophyll in its proglottids
Show answer

Answer: C. A tapeworm lives in the host's intestine, where food is already digested, so it simply absorbs nutrients through its body wall. Its gut has been lost, and it has no chlorophyll.

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Ways to practise this chapter

Kingdom Animalia: questions students ask

How many Kingdom Animalia MCQs are there?

24, each with the answer and a short explanation, across 2 topics: Bases of classification and non-coelomate phyla, Coelomate phyla and Chordata. Every chapter test draws ten of them, so you can take it many times.

Is the FSc Part 1 Biology chapter 10 test free?

Yes. The test, the answers and the explanations are free and need no sign-up. Sign in only if you want your scores kept across devices.

How is the chapter test marked?

The moment you press Finish: your score, the right answer and an explanation for every question, and the ones you got wrong saved in My mistakes to retry.

Can I read the explanations in Urdu?

Yes. In practice mode and on your results you can switch the explanations to Urdu.

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