Read the following four statements:I. Both, photophosphorylation

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11.

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


A.

Two

Symbiotic nitrogen-fixing bacteria and Cyanobacteria are found in association to plant. The most common symbiotic bacteria is Rhizobium.
In dicot stem, the cambium present between xylem and phloem in vascular bundles is called fascicular or intrafascicular cambium. Besides this some cells of medullary rays also become meristematic and called interfascicular cambium.

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12.

CAM helps the plants in

  • secondary growth

  • disease resistance

  • reproduction

  • reproduction

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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

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14.

Which one of the following is essential for photolysis of  water

  • Manganese

  • Zinc

  • Copper

  • Copper

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15.

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

  • bryophyte

  • gymnosperm

  • angiosperm

  • angiosperm

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16.

Photoperiodism was first characterised in

  • tobacco

  • potato

  • tomato

  • tomato

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17.

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

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18.

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

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19.

Kranz anatomy is one of the characteristics of the leaves of 

  • potato

  • wheat

  • sugarcane

  • sugarcane

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20.

Oxygenic photosynthesis occurs in

  • Chromatium

  • Oscillatoria

  • Rhodospirillum

  • Rhodospirillum

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