Q19 of 59 Page 71

A cyclic process is occurring in C3 plant, which is light dependent, and needs O2. This process doesn’t produce energy rather it consumes energy.

a. Can you name the given process?


b. Is it essential for survival?


c. What are the end products of this process?


d. Where does it occur?


(a) Photorespiration

(b) It is not essential for survival.


(c) Hydrogen peroxide


(d) It occurs in chloroplast, mitochondria and peroxisome.


More from this chapter

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17

Why do we believe chloroplast and mitochondria to be semi-autonomous organelle?

 18

Observe the diagram and answer the following.


a. Which group of plants exhibits these two types of cells?


b. What is the first product of C4 cycle?


c. Which enzyme is there in bundle sheath cells and mesophyll cells?


 20

Suppose Euphorbia and Maize are grown in the tropical area.

a. Which one of them do you think will be able to survive under such conditions?


b. Which one of them is more efficient in terms of photosynthetic activity?


c. What difference do you think are there in their leaf anatomy?


 1

Is it correct to say that photosynthesis occurs only in leaves of a plant? Besides leaves, what are the other parts that may be capable of carrying out photosynthesis? Justify.