1. Complete the following passage by filling in the blanks
The vascular tissues of flowering plants are and
which materials. transports water and from the root to the other parts of the plant. The walls of theprovide support for the plant. transports manufactured materials such as and amino acids from the to other parts of the plant.
2. The terms U to Z in the box are processes involved in the transport of
materials in plants. Use them to answer questions (a) to (d)
U: Transpirational pull V: Capillary action W: Osmosis
X: Diffusion Y: Active transport Z: Root pressure
(a) What forces are involved in the transport of water and ions up
the xylem vessels?
(b) Name the possible processes by which ions enter root hairs.
(c) How does water vapor pass out of the
leaves into the surrounding air?
(d) How does water enter root hairs?
3. Mach the following terms with their associated description.
A. Loss of water mainly
from stomata of leaves Transpiration pull
B. Continuous flow of water up
the plant Transpiration
C. Main force in pulling water
and mineral salts up the plant Companion cells
D. Assists sieve tubes in
transport of manufactured food Transpiration stream
4. Indicate whether the rate of transpiration increases or decreases in (a) to (d)
(a) When the temperature drops
(b) After a heavy shower
(c) When it becomes sunny
(d) When a strong breeze blows
5. Answer the following structured questions (a) and (b)
(a) Describe the difference between xylem vessels and sieve tubes in
the substances that they transport.
(b) Describe the difference between xylem vessels and sieve tubes in
the direction these substances are carried.
Answers: 1
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1. Complete the following passage by filling in the blanks
The vascular tissues of flowering plants...
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