Classes of Animals MCQs with Answers

What is an invertebrate?

• A.An animal without a backbone
• B.An animal with a segmented body
• C.An animal that lays eggs
• D.An animal that lives in water

Past Paper MCQ

To which species does the penguin belong?

• A.Mammal
• B.Bird
• C.Reptile
• D.Amphibian

The fish that retain urea in their bodies are called:

• A.Lungfish
• B.Bony fish
• C.Jawless fish
• D.Cartilaginous fish

Trochophore larva is found in which organisms?

• A.Nematodes and Poriferans
• B.Arthropods and Echinoderms
• C.Cnidarians and Platyhelminthes
• D.Mollusks and Annelids

Which are flattened dorsoventrally and have a gastrovascular cavity with one opening?

• A.Roundworms
• B.Flatworms
• C.Segmented worms
• D.Ribbon worms

In echinoderms, water enters in canals through sieve like cells called _?

• A.Madrepore
• B.Ostia
• C.Spiracles
• D.Cnidocytes

Poikelotherms are considered as _?

• A.Warm blooded
• B.Cold blooded
• C.Both warm and cold blooded
• D.None of these

Snail belongs to which of the following phylum?

• A.Arthropoda
• B.Annelida
• C.Mollusca
• D.Echinodermata

Which of the following is free living?

• A.Plasmodium
• B.Tapeworm
• C.Hydra
• D.Ascaris

Arthropoda are 54% of all animals due to which feature?

• A.Open circulatory system
• B.Exoskeleton made of chitin
• C.Segmented body
• D.Jointed appendages