Free Transport In Plants (Daily Quiz: 5) NEET Biology Questions & Answers with Detailed Explanation & Full Review

Question-1

The graph shows the relationship between yw (water potential), ys (solute potential) and yp (pressure potential) for a plant cell placed in pure water.

What are the correct labels for the graph?

	P	Q	R
(a)	$ψ_{W}$	$ψ_{p}$	$ψ_{s}$
(b)	$ψ_{W}$	$ψ_{s}$	$ψ_{p}$
(c)	$ψ_{p}$	ψ	$ψ_{s}$
(d)	$ψ_{p}$	$ψ_{s}$	$ψ_{W}$

(a) (a)

(b) (b)

(c) (c)

(d) (d)

Question-2

Bidirectional translocation of minerals takes place in

(a) Phloem

(b) Xylem

(c) Parenchyma

(d) Cambium

Question-3

A plant cell placed in pure water will

(a) becomes more turgid until the pressure potential of cell reaches its osmotic potential.

(b) expand until the osmotic potential or solute potential reaches that of water.

(c) become more turgid until the osmotic potential reaches that of pure water.

(d) becomes less turgid until the osmotic potential reaches that of pure water.

Question-4

Which of the following statement(s) is / are correct?

1. Root pressure provides a tight push in the overall process of water transport.
2. Most plants meet their water need by transpiration pull.
3. The greatest of root pressure may be to re-establish the continuous chains of water molecules in the xylem vessel which often break under enormous tension created by transpiration.
4. Guttation is the cause of transpiration pull.

(a) (1), (2) and (3)

(b) (1), (2), (3) and (4)

(c) (2), (3) and (4)

(d) (2) and (3)

Question-5

Stomata open when guard cells are

(a) Functionless

(b) Flaccid

(c) Dumb-bell shaped

(d) Turgid