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WorksheetsIB Biology 9.2
Total questions: 10
Worksheet time: 5mins
Name
Class
Date
1.
Which of the following are transported in phloem - and by what process?
a)
Sucrose, amino acids, minerals - actively by translocation
b)
Sucrose, carbonic acids, hormones - actively by transpiration
c)
Sucrose, amino acids, hormones - actively by translocation
d)
Sucrose, amino acids, hormones - passively by translocation
2.
Which part of the aphid will reach into which structure in the plant?
a)
tail piece; phloem
b)
stylet; xylem
c)
tail piect; pith
d)
stylet; phloem
3.
What is the main explanation for the fact that water can cause hydrostatic pressure?
a)
Because it is incompressible.
b)
Because it is polar.
c)
Because it attracts other water molecules.
d)
Because it exhibits electronegativity.
4.
Which cells are alive but lack organelles?
a)
Xylem cells
b)
Tracheid cells
c)
Companion cells
d)
Sieve tube cells
5.
What is the name for the structures that allow flow of material between phloem cells?
a)
Cellulose
b)
Sieve plate
c)
Sieve cell
d)
Trachieds
6.
Why must radioactive CO2 be used when tracing phloem flow?
a)
It is incorporated into the phloem cells
b)
It is incorporated into the minerals in the phloem
c)
It is incorporated into the sucrose during cellular respiration
d)
It is incorporated into the sucrose during photosynthesis
7.
Which best describes the flow of phloem?
a)
Root to shoot; one direction
b)
Source to sink; two directions
c)
Source to sink; one direction
d)
Root to shoot; two directions
8.
Where is phloem tissue found in a stem?
a)
On the side facing the epidermis in the vascular bundle.
b)
One the side facing the pith in the vascular bundle.
c)
Distributed with some facing the epidermis and some facing the pith.
d)
Only in the middle of the vascular bundle.
9.
All of the following EXCEPT ______ are produced by plants and carried in phloem.
a)
Auxins
b)
amino acids
c)
minerals
d)
hormones
10.
All of the following are involved in translocation EXCEPT:
a)
Living tissue
b)
Thick cellulose
c)
companion cells
d)
Diffusion
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