Biotechnology - Transport of Molecules in Plant

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Exercise :: Transport of Molecules in Plant - Section 1

  • Transport of Molecules in Plant - Section 1
1. 

A widely accepted explanation for transport of sugar in phloem is called

A. root pressure theory
B. transpiration
C. pressure flow hypothesis
D. cytoplasmic streaming

Answer: Option C

Explanation:

No answer description available for this question. Let us discuss.

2. 

Phloem is composed of

A. vessel elements and companion cells
B. tracheids and vessel elements
C. sieve-tube elements and companion cells
D. tracheids and sieve-tube elements

Answer: Option C

Explanation:

No answer description available for this question. Let us discuss.

3. 

The movement of most minerals, including potassium into root cells is by

A. osmosis
B. diffusion
C. bulk flow
D. active transport

Answer: Option D

Explanation:

No answer description available for this question. Let us discuss.

4. 

The evaporation of water from leaves is called

A. transpiration
B. cohesion
C. tension
D. pressure flow

Answer: Option A

Explanation:

No answer description available for this question. Let us discuss.

5. 

Normally CO2 and O2 enter a plant by

A. osmosis
B. active transport
C. diffusion
D. evaporation

Answer: Option C

Explanation:

No answer description available for this question. Let us discuss.