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Transport in Plants Summary

Total questions: 14

Worksheet time: 7mins

Name
Class
Date
1.

What are the specialised protein channels that help to transport water across the membrane in root hair cells?

a)

proton pumps

b)

apoptosis channels

c)

water channels

d)

aquaporins

2.

Which tissue is the arrow pointing to?

a)

Phloem

b)

Xylem

c)

pith

d)

epidermis

3.

Which tissue type is the arrow pointing to?

a)

xylem

b)

endodermis

c)

Casparian strip

d)

pericyle

4.

Which tissue type is the arrow point to?

a)

cambium

b)

xylem

c)

phloem

d)

pith

5.

Which tissue type is the arrow point to?

a)

endodermis

b)

cortex

c)

epidermis

d)

casparian strip

6.

Cellulose in the cell walls of xylem, increases the ______ of water molecules to help resist the effect of gravity.

a)

cohesion

b)

pressure

c)

adhesion

d)

arrangement

7.

In xylem, there are gaps within the lignin called _____. These allow surrounding cells to be supplied with water.

a)

holes

b)

plasmolemma

c)

pits

d)

companion cells

8.

The Casparian strip contains a waterproof band made of ______ that prevents further progress of water in the cell walls.

a)

lignin

b)

cellulose

c)

suberin

d)

starch

9.

Movement of water through the cytoplasm and plasmodesmata in the root, is known as the:

a)

apoplastic pathway

b)

symplastic pathway

c)

cellular pathway

d)

vacuolar pathway

10.

Hairs on the inner epidermis of xerophytes reduce air-flow and trap moist air. They are called:

a)

sunken stomata

b)

trichomes

c)

spikes

d)

projections

11.

Companion cells are packed full of ______ to make ATP.

a)

mitochondria

b)

chloroplasts

c)

cytoplasm

d)

proton pumps

12.

Which is not an example of an assimilate that could be found in the phloem sieve tube element

a)

amino acids

b)

sucrose

c)

potassium ions

d)

hormones such as oestrogen

13.

The bulk movement of a substance, such as water in the xylem is known as:

a)

group flow

b)

mass flow

c)

co-ordinated flow

d)

team flow

14.

When transpiration rates increase, what will happen to the cohesion tension in the xylem?

a)

decreases

b)

increases

c)

stays the same