Life Processes Worksheet-24

Life Processes Worksheet-24


Multiple Choice questions:

  1. In which kind of leaf rate of photosynthesis will be highest?

(a) Young leaf                               (b) Mature leaf

(c) Older leaf                                 (d) All


  1. In which part of the leaf photosynthesis is maximum?

(a) Upper epidermis                    (b) Palisade mesophyll

(c) Spongy mesophyll                  (d) Lower epidermis


  1. What is the optimum temperature for photosynthesis?

(a) 45 degree Celsius                   (b) 40 degree Celsius

(c) 35degree Celsius                    (d) 30 degree Celsius


  1. The electrons liberated during splitting of water during light reaction is used for

(a) Reduction of Carbon dioxide

(b) Reduction of NADP

(c) Reduction of ATP

(d) None


  1. The low light intensity at which the rate of photosynthesis equals that of respiration is known as

(a) photosynthetic point factor

(b) Compensation point

(c) Photorespiration point

(d) none


  1. Which is the site of carbondioxide fixation and reduction in the chloroplast?

(a) Grana                                       (b) thyllakoid Lamallae

(c) Matrix                                      (d) Stroma


  1. Which of the following acts as the hydrogen provider during photosynthesis?

(a) Water                                        (b) Carbondioxide

(c) Chlorophyll                              (d) Sunlight


  1. Which is the green  colored photosynthetic pigment present in higher plants?

(a) Carotene                                   (b) Xanthophyll

(c) chlorophyll                               (d) Anthocyanin


  1. Which one of the following features of plant leaves plays an important part in exchange of gases during photosynthesis?

(a) Thick cuticle                            (b) Spongy mesophyll

(c) Chloroplasts                            (d) Stomata


  1. The specific function of light energy in the process of photosynthesis is to

(a) Formation of assimilatory power

(b) Photolysis of water

(c) Activation of chlorophyll

(d) all of the above


Answer Key:

  1. (b)
  2. (b)
  3. (c)
  4. (a)
  5. (b)
  6. (d)
  7. (a)
  8. (c)
  9. (d)
  10. (d)