Q7 of 63 Page 195

The protozoans are early animals. Do you agree? Give at least two reasons to support your answer.

Yes, protozoans are early animals. This is because:

1. They have a very basic body design and minimal differentiation.


2. They are unicellular organisms, and only one cell performs all necessary functions.


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5

The cell wall of different organisms differ. Is it true?

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A weed is growing on the border of your play ground. How would you recognize it to be a dicot or monocot?

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Name the respective organisms.

(i) An arthropod that cannot fly.


(ii) A mollusk that possesses eyes.

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Sea cucumber belongs to which phylum? Describe it’s structure associated with locomotion.