Biology

Question 1

1An animal cell placed in pure water will

Easy

A. shrink B. stay the same C. become plasmolysed D. swell and may burst

Question 2

2Loss of water vapour from the aerial parts of a plant is

Easy

A. transpiration B. translocation C. respiration D. guttation

Question 3

3Water enters root hairs by

Easy

A. active transport only B. osmosis C. photosynthesis D. transpiration

Question 4

4Guttation is the loss of

Medium

A. water vapour from stomata B. sugar from phloem C. liquid water from leaf margins D. gases

Question 5

5The tissue that carries water in a cut stem placed in red ink is

Easy

A. cambium B. pith C. xylem D. phloem

Question 6

6Turgor pressure helps plants to

Easy

A. make food B. absorb light C. divide D. stay firm and upright

Question 7

7Osmosis requires energy from the cell.

Easy

A. True B. False

Question 8

8Wilting occurs when

Easy

A. photosynthesis increases B. plant cells lose turgor C. roots grow D. stomata open widely

Question 9

9Which factor increases the rate of transpiration?

Easy

A. closed stomata B. still air C. high temperature D. high humidity

Question 10

10Which of these reduces water loss in desert plants?

Easy

A. many stomata B. large leaves C. a thick waxy cuticle D. thin leaves