CBSE Class 11 Biology Revision Assignment Set D

1. Name the element which is required for keeping two sub-units of ribosomes together.

2. Define Coenocyte, Syncytium.

3. Name the non-living components of a cell.

4. What are plasmids? Describe their significance.

5. Write a short note on plastids. Are different types of plastids interchangeable? If yes, give examples.

6. Draw well labelled diagram of organelles which are semiautonomous and also give reason. Why are they called so?

7. Match the items of List I and List II.

         I                                                  II

1. Microbodies                 contain digestive enzymes

2. Air Vacuoles                 store & concentrate mineral salts and nutrients.

3. Food vacuoles              osmoregulation

4. Contractile vacuoles      enzyme for Peroxide Metabolism

5. Sap vacuole                 store metabolic gases.

8. What are different types of Chromosomes on the basis of position of Centromere.

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