Transpiration can cool the leaf surface up to

(1) 10 to 15 degrees

(2) Up to 70 degrees

(3) Up to 2 degrees

(4) Up to 50 degrees

Subtopic:  Photosynthesis Transpiration Compromise & Mineral Translocation |
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Elements most readily mobilized are

1. P, S and Ca

2. N, K and P

3. N, P and Fe

4. S, Zn and P

Subtopic:  Photosynthesis Transpiration Compromise & Mineral Translocation |
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C4 plants are …….as efficient as C3 plants in term of making sugar and lose only ….. of the water in comparison.

(1) Half, double

(2) Twice, half

(3) One fourth, one third

(4) Twice, one third

Subtopic:  Photosynthesis Transpiration Compromise & Mineral Translocation |
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Most of the minerals are absorbed through active transport because

(1) Minerals are charged particles

(2) Minerals are insoluble in lipid bilayer

(3) The amount of mineral is less in soil

(4) All of these

Subtopic:  Photosynthesis Transpiration Compromise & Mineral Translocation |
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The humidity of rainforests is largely due to

(1) Guttation

(2) Transpiration

(3) Photosynthesis

(4) Respiration

Subtopic:  Photosynthesis Transpiration Compromise & Mineral Translocation |
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Which one of the following elements in plants is not remobilised?

1. Calcium

2. Potassium

3. Sulphur

4. Phosphorus

Subtopic:  Phloem Translocation | Photosynthesis Transpiration Compromise & Mineral Translocation |
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Xylem translocates:

1. Water, minerals salts, some nitrogen and hormones

2. Water only

3. Water and mineral salts only

4. Water, mineral and some organic nitrogen only

Subtopic:  Photosynthesis Transpiration Compromise & Mineral Translocation |
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Which of the following is not a purpose of Transpiration?

(1) Absorption of minerals and water from the soil and transport in the plants

(2) Supplies water for photosynthesis

(3) Evaporative heating

(4) Maintains the shape and structure of the plants by keeping cells turgid

Subtopic:  Photosynthesis Transpiration Compromise & Mineral Translocation |
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Which one of the following is correctly matched?

1. Passive transport of nutrients-ATP

2. Apoplast- Plasmodesmata

3. Potassium- Readily mobilized

4. Bakane of rice seedlings-F Skoog

Subtopic:  Photosynthesis Transpiration Compromise & Mineral Translocation |
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What are the control points where a plant adjusts the quantity and types of solutes that reach the xylem?

1. Suberin deposited casparian strips

2. Transport proteins of endodermal cell

3. Sclerenchyma around the pericycle

4. The root hairs themselves

Subtopic:  Photosynthesis Transpiration Compromise & Mineral Translocation |
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