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phloem loading

Total questions: 8

Worksheet time: 4mins

Name
Class
Date
1.

what type of transport occurs in the phloem of sucorse

a)

active tranport

b)

diffusion

c)

translocation

d)

transpiration

2.

do companion cells have cell organelles

a)

yes

b)

yes

c)

no

d)

no

3.

do sieve tube cells have organelles

a)

yes

b)

no

c)

yes

d)

no

4.

what does is the other substance transported with sucrose

a)

ions

b)

Na+ ions

c)

H+ ions

d)

minerals

5.

why does hydrostatic pressure increase in the phloem

a)

high conc of sucrose in phloem decreases water potential

b)

high conc of sucrose in phloem increases water potential

c)

low conc of sucrose in phloem increases water potential

d)

low conc of sucrose in phloem decreases water potential

6.

adaptions of companion cells

a)

they have many mitochondria

b)

They have infolding in nuclear membrane to increase SA for active transport of solutes and many mitochondria to provide the energy for the proton pump

c)

biology

d)

They have infolding in membrane to increase SA for active transport of solutes and many mitochondria to provide the energy for the proton pump

7.

what is a source

a)

a part of a plant that has a surplus of sucrose

b)

a part of a plant that has a lot of sucrose

c)

a part of plant that has just enough sucrose

d)

a part of plant which has no sugar

8.

do you like bio

a)

yes

b)

no

c)

purr

d)

slay