Saturday, August 11, 2012

CBSE_NCERT_7th Respiration in animals and plants

Class VII Chapter –Respiration in Plants and animals: Fill in the blanks

1. Bacteria and fungi can respire --------------

Ans: Anaerobically

2. --------------is one- celled fungus and respires anaerobically to produce alcohol

Ans: Yeast

3. The respiration which takes place in the absence of oxygen is called -------------------

Anaerobic respiration

4. Anaerobic respiration takes place in our skeletal muscles and produce --- alcohol

Ans: Ethyl

5. The respiration which takes place in the presence of oxygen is called ------------

Ans: Aerobic respiration

6. The process of oxidation of food to release energy  from absorb food in living cells is called ----------

Ans: respiration or cellular respiration.

7. In cockroaches air enters the body through  ------

Spiracles

8. During heavy exercise, we get cramps in the legs due to the accumulation of ---------

lactic acid           

9. As we breathe in, the diaphragm moves -------- and ribs move up or expands

Downward

10. Below the lungs is a strong, fl at sheet of muscle called --------

Diaphragm.

11. Each bronchus enters the lungs and divides into small tubes bronchioles which end up in air sacs called -------
Alveoli

12. The walls of alveoli are supplied with thin blood vessels called -------

Capillaries

13. Frogs breathe through their  -------- as well as their lungs.

skins

14. during exhalation, the ribs moves ----, as the diaphragm moves up to its original place

Ans:  downward

15. In unicellular and smaller multicellular animal’s exchange of gas takes place by ---------

Diffusion

16. Exchange of gases takes place in insect through -------into trachea.

Spiracles

17. plants breathe through tiny pores in the leaves called ---------

Ans: Stomata.

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