CBSE Class 11 Biology Photosynthesis in Higher Plants MCQs Set 03

Question : Fixation of one CO₂ molecule through Calvin cycle requires 
a) 1 ATP and 2NADPH₂
b) 2 ATP and 2NADPH₂
c) 3 ATP and 2NADPH₂
d) 2ATP and 1NADPH₂
Answer : C

Question : The water of guttation is forced out of the leaves by:
a) Diffusion
b) Root Pressure
c) Imbibition
d) Active transport
Answer : B

Question : The movement of solvent molecules through a semi-permeable membrane from a region of low solute concentration to a region of high solute concentration is:
a) Diffusion
b) Plasmolysis
c) Osmosis
d) Active transport
Answer : C

Question : The osmotic pressure of a solution
a) increases with increase in concentration of solute
b) decrease with increase in concentration of solute
c) remains unchanged with increase in concentration of sol
d) none of these
Answer : A

Question : The transport of substances from a region of its lower concentration to its higher concentration is called:
a) Osmosis
b) Imbibition
c) Active transport
d) Passive transport
Answer : C

Question : The taking up of a liquid by a substance with the resultant swelling in volume is called:
a) Plasmolysis
b) Imbibitions
c) Diffusion
d) Active transport
Answer : B

Question : Germination of seed involves the rupturing of seed coat because of:
a) Osmosis
b) Imbibitions
c) Diffusion
d) Active transport
Answer : B

Question : The shrinkage of protoplasm due to ex-osmosis of water from the cell is called:
a) Osmosis
b) Deplasmolysis
c) Plasmolysis
d) Imbibition
Answer : C

Question : The process where by water moves through the plants is known as :
a) Transpiration 
b) Translocation
c) Guttation
d) Osmosis
Answer : B

Question : Which of the following conducts water inside plant body?
a) phloem
b) xylem
c) cortex
d) pith
Answer : B

Question : The exudation of water drops from the leaves of intact plants is:
a) guttation
b) transpiration
c) evaporation
d) transportation
Answer : A

Question :  In which of the following assimilates move along the concentration gradient?
a) sieve tubes
b) xylem vessels
c) trachieds
d) fibers
Answer : A

Question : Which of the following percentage of transpiration usually occurs through the stomata?
a) 30%
b) 50%
c) 60%
d) 90%
Answer : D

Question : The combined area of total stomatal pores as compared to the total leaf area is almost:
a) 1-2%
b) 3-4%
c) 5-6%
d) 7-8%
Answer : A

Question : The number of stomata per square centimeter of leaf surface of tobacco leaf is almost:
a) 1200
b) 2100
c) 12000
d) 21000
Answer : C

Question : The processes involved in stomatal transpiration are:
a) 2 
b) 4   
c) 8 
d) 6
Answer : A

Question : When leaf cells are fully turgid, the transpiration rate is:
a) high
b) medium
c) low
d) not affected
Answer : A

Question : The rate of water evaporation doubles for every temperature rise of:
a) 10 ^oC
b) 20 ^oC
c) 5 ^oC
d) 25 ^oC
Answer : A

Question : Oxygen gas released during photosynthesis is comes from:
a) Water
b) CO₂ 
c) Glucose
d) None of these
Answer : A

Question : Chlorophylls c, d and e are present in:
a) Angiosperms
b) Gymnosperms
c) Bacteria
d) Algae
Answer : D

Question : Chlorophyll is a large molecule with a central core of:
a) Iron
b) Sulphur
c) Nitrogen
d) Magnesium
Answer : D

Question : Chlorophyll mainly absorbs red light and:
a) Green light
b) Yellow light
c) Blue light
d) Orange light
Answer : C

Question : In the photo system II, high energy electrons of chlorophyll molecule are accepted by:
a) PC
b) PQ
c) NAD
d) ATP
Answer : B