CBSE Class 7 Science Revision Worksheet Set 16

I. FILL IN THE BLANKS

1. __________________ is the mode of taking food by an organism and its utilisation by the body.

2. Components of food which are necessary for our body are called___________________.

3. Green plants synthesise their own food themselves by the process of ___________________.

4. The synthesis of food in plants occurs in ______________________.

5. __________________ gas is produced during photosynthesis.

6. _________________ are the tiny pores present on the surface of the leaves and are surrounded by guard cells.

7. The bodies of living organisms are made of tiny units called ____________________.

8. ___________________ Is the ultimate source of energy for all living organisms.

9. Organisms which derive their nutrition from dead decaying matter are called ____________________.

10. Some organisms live together and share shelter and nutrients, this is called __________________.

11. Complex chemical substances such as ____________________ are the products of photosynthesis.

12. Organisms that are dependent on others for their nutrition are called __________________.

II. NAME THE FOLLOWING

1. The mode of nutrition in mushrooms.

2. A bacteria that can take atmospheric nitrogen and convert it into a soluble form.

3. The green pigment present in the leaves.

4. The indicator used to test the presence of starch in leaves.

5. Some plant nutrients presents in fertilizer in fertilisers and manures.

III. WRITE TRUE OR FALSE

1. Some fungi are used in medicines.

2. Most of the pulses are obtained from leguminous plants.

3. Lichens, an alga and a fungus show symbiotic relationship.

4. In desert plants, green stems carry out photosynthesis