Photosynthesis And Affecting Factors MCQs with Answers

Hello students, our next topic for the MCQ is ‘PHOTOSYNTHESIS AND AFFECTING FACTORS’. The plants use photosynthesis process to make their food. It is the conversion of light energy into chemical energy. For the photosynthesis process plant needs water, soil, light and nutrients. The xylem supply water from roots to leaves in the plants. The stomata of plant is responsible for the gaseous exchange.

The following MCQ will provide you more information about this topic.

 

MCQ.1):A process that is conditioned as to its rapidity by a number of separate factors and the rate of the process is limited by pace of the slowest factor, this is known as ……………………………………………….

a)Pythagoras law

b) Darwin’s law

c) Blackman’s law

d) Mendel’s law

 

MCQ.2):What is the range of temperature where it increases photosynthesis with rise in temperature?

a) 43o C

b)2o C

c) 37o C

d)89o C

 

MCQ. 3):When the inactivation of enzymes causes due to high temperature and affects the enzymatically controlled ………………………..Of photosynthesis.

a)Light reaction

b)Dark reaction

c)Red reaction

d)White reaction

 

MCQ.4):The increase in the amount of ………………………………….………… increases photosynthesis process.

a)Nitrogen

b)Phosphorous

c)Histone

d)Carbon dioxide

 

MCQ.5):In the photosynthesis process, the ……………………………………………..Is a source of light.

a)Solar radiation

b)Yeats bacteria

c)Carbon dioxide

d)Oxygen

 

MCQ.6):The photosynthesis process does not occurs in the cells where ……………………..Is absent in plants.

a)Air

b)Oxygen

c)Nails

d)Calcium

 

MCQ.7):Which of the following is a very specific and sensitive inhibitor of photosynthesis?

a)PCMC

b)WCMC

c)TCMU

d)DCMU

 

MCQ.8):The increase in the concentration of carbon dioxide up to 0.05% ……………………………….………… carbon dioxide fixation.

a)Remains same

b)Decreases

c)Increases

d)Moderate

 

MCQ.9):Which is the internal factor that mainly affects photosynthesis process?

a)Protoplasmic factors

b)Temperature

c)DCMU

d)Carbon dioxide

 

MCQ.10):The rate of photosynthesis is equal to the rate of …………………………….

a)Excretion

b)Digestion

c)Respiration

d)Ingestion

 

Answer

1)c) Blackman’s law

2)c) 37o C

3)b) Dark reaction

4)d) Carbon dioxide

5)a) Solar radiation

6)b) Oxygen

7)d) DCMU

8)c) Increases

9)a) Protoplasmic factors

10)c) Respiration


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