Q4 of 32 Page 8

Polluted water bodies have usually very high abundance of plants like Nostoc and Oscillitoria. Give reasons.

Polluted water bodies are rich in nutrients especially in nitrogen content which provides favourable condition to algae like Nostoc and Oscillotoria to bloom in the water bodies.


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2

Suppose you accidentally find an old preserved permanent slide without a label. In your effort to identify it, you place the slide under microscope and observe the following features :-

a. Unicellular


b. Well defined nucleus


c. Biflagellate–one flagellum lying longitudinally and the other transversely.


What would you identify it as? Can you name the kingdom it belongs to?


 3

How is the five–kingdom classification advantageous over the two kingdom classification?

 5

Are chemosynthetic bacteria-autotrophic or heterotrophic?

 6

The common name of pea is simpler than its botanical (scientific) name Pisum sativum. Why then is the simpler common name not used instead of the complex scientific/ botanical name in biology?