Read the following four statements:
I. Both, photophosphorylation and oxidative phosphorylation involve uphill transport of protons across the membrane.
II. In dicot stems, a new cambium originates from cells of pericycle at the time of secondary growth.
III. Stamens in flowers of Gloriosa and Petunia are polyandrous.
IV. Symbiotic nitrogen fixers occurs in free-living state also in soil. 

How many of the above statements are right 

• Two

• Three

• Four

• Four

CAM helps the plants in

• secondary growth

• disease resistance

• reproduction

• reproduction

13.

In Kranz anatomy, the bundle sheath cells have

• thin walls, many intercellular spaces and no chloroplasts

• thick walls, no intercellular spaces and a large number of chloroplasts

• thin walls, no intercellular spaces and several chloroplasts

• thin walls, no intercellular spaces and several chloroplasts

Which one of the following is essential for photolysis of  water

• Manganese

• Zinc

• Copper

• Copper

PGA as the first CO₂ fixation product was discovered in photosynthesis of 

• bryophyte

• gymnosperm

• angiosperm

• angiosperm

Photoperiodism was first characterised in

• tobacco

• potato

• tomato

• tomato

C₄ plants are more efficient in photosynthesis than C₃ plants due to 

• higher leaf area

• the presence of a larger number of chloroplasts

• the presence of thin cuticle

• the presence of thin cuticle

Read the following four statements, A, B,C and D select the right option having both correct statements.

A) Z scheme of light reaction takes place in presence of PS- I only.

B) Only PS-I is functional in cyclic photophosphorylation.

C) Cyclic photophosphorylation results into synthesis of ATP and NADPH₂

D) Stroma lamellae lack PS-II as well as NADP.

• B and D

• A and B

• B and C

• B and C

Kranz anatomy is one of the characteristics of the leaves of 

• potato

• wheat

• sugarcane

• sugarcane

Oxygenic photosynthesis occurs in

• Chromatium

• Oscillatoria

• Rhodospirillum

• Rhodospirillum