TEST PAPER 27 : CHAPTER 13 : NUTRITION & RESPIRATION IN ORGANISMS : 25 MARKS

There are 13 questions in all and time limit is 45 minutes.

SECTION - A : CHOOSE APPROPRIATE ALTERNATIVE : [1 mark each, Total marks 3]

1. The layer of dead cells having tiny openings on the roots is called...
   
   
   
   1. root nodule
   2. stomata
   3. chlorenchyma
   4. lenticels
      
   
   
2. Cockroach shows _____ mode of nutrition.
   
   
   
   1. herbivorous
   2. carnivorous
   3. omnivorous
   4. parasitic
      
   
   
3. The function of incisors is ______.
   
   
   
   1. cutting
   2. tearing
   3. grinding
   4. chewing
      
   
   

   SECTION - B : ANSWER IN SHORT : [1 mark each, Total marks 3]
   

4. What are autotrophic organisms ?
5. How does the rate of photosynthesis depend upon the intensity of light ?
6. Through what does the frog respire ?
   
   

   SECTION - C : ANSWER IN BRIEF : [2 marks each, Total marks 8]
   

7. Eaplain : Saprophytic nutrition.
8. Describe exchange of gases in tissues.
9. Describe aerobic respiration.
10. Describe respiration in insects.
    
    

    SECTION - D : ANSWER THE FOLLOWING : [3 marks each, Total marks 6]
    

11. Describe the light phase of photosynthesis.
12. Describe nutrition in amoeba with diagram.
    
    

    SECTION - E : ANSWER IN DETAIL : [5 marks each, Total marks 5]
    

13. Describe human respiratory system.