Q.1: The body of animals in ______________ group, is bilaterally symmetrical, meaning that the left and right halves of the body have the same design.
a) Coelenterata
b) Porifera
c) Platyhelminthes
Q.2: ____________ means organisms with holes.
a) Coelenterata
b) Porifera
c) Platyhelminthes
Q.3: Which of the following statements represent the characteristics of Porifera ?
i) Body is covered with a hard outside layer or skeleton.
ii) Body is made of two layers of cells.
iii) Body designs involves minimal differentiation.
a) i and ii
b) i and iii
c) ii and iii
Q.4: Why are the Platyhelminthes called “Triploblastic” ?
a) Because they have three layers of cells.
b) Because they mostly live in colonies.
c) Because they have two layers of cells.
Q.5: The worms in the intestines belong to _____________ group.
a) Nematoda
b) Annelida
c) None
Q.6: What is the similarity between Nematoda and Annelida animals ?
a) Both are bilaterally symmetrical
b) Both are triploblastic
c) Both ‘a’ and ‘b’
Q.7: The body of ___________ is flattened dorsiventrally, thus they are also called “flatworms”.
a) Coelenterata
b) Annelida
c) Platyhelminthes
Q.8: ___________ is likely to be the largest group of animals.
a) Nematodes
b) Arthropoda
c) Mollusca
Q.9: ____________ have hard calcium carbonate structures that they use as a skeleton.
a) Nematodes
b) Echinodermata
c) Mollusca
Q.10: Snails and mussels come under the ___________ group of animals.
a) Nematodes
b) Echinodermata
c) Mollusca
Q.11: The ___________ is a long rod-like support structure that runs along the back of the animal separating the nervous tissue from the gut.
a) notochord
b) cilia
c) coelomic cavity
Q.12: Vertebrates are grouped into ________ classes.
a) five
b) six
c) eight
Answers:
- c
- b
- b
- a
- a
- c
- c
- b
- b
- c
- a
- a
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