WorksheetsIB biology 9.3
Total questions: 11
Worksheet time: 8mins
Name
Class
Date
1.
What is meristematic tissue AND where is it found?
a)
undifferentiated tissue; throughout entire plant.
b)
undifferentiated tissue; in apical and lateral meristems.
c)
differentiated tissue, throughout plant
d)
differentiated tissue; in apical and lateral meristems
2.
What best describes an efflux pump with a correct example?
a)
Pumps material out of a cell; proton pump involved in cell wall acidification
b)
pumps material into a cell; proton pump involved in cell wall acidification
c)
Pumps material into a cell; formation of cellulose cell wall
d)
Pumps material out of a cell; electron pump involved in thylakoid membrane.
3.
Cells on which side of the stem will undergo elongation?
a)
dark side
b)
light side
c)
both sides
d)
in the middle
4.
Which of the following are involved in phototrophism? I. auxinII. proton pumpsIII. expansinsIV. sunlight
a)
I and II only
b)
I, II and III only
c)
II and III only
d)
I, II, III and IV
5.
What process can cause cells to elongate?
a)
The movement of protons into the cell wall; loosening of the cellulose; efflux of water
b)
The movement of protons into the cell wall; loosening of the cellulose; influx of water
c)
The movement of protons into the cytoplasm; loosening of the cell wall; influx of water
d)
The movement of protons into the nucleus; activating genes to loosen the cell wall; influx of water
6.
Micropropagation can be used to:I. Produce many clones of new varieties of plants II. Re-populate endangered plant speciesIII. Protect plants from viruses and bacteria found in the natural environment
a)
I only
b)
I and II only
c)
II and III only
d)
I, II and III
7.
Which processes best describe phototrophism?
a)
Plants growing towards light; cells on light side elongating
b)
Plants growing away from light; cells on light side elongating
c)
Plants growing toward light; cells on the dark side elongating
d)
Plants growing towards light, cells on the light and dark side elongating
8.
Why is it important for the cell wall to loosen during cell elongation?
a)
To activate proton pumps
b)
To allow active transport of water
c)
To allow auxin to be released
d)
To allow osmosis to occur
9.
What best describes a group of undifferentiated plant cells produced by micropropagation?
a)
callus
b)
embryoid
c)
plant
10.
Which of the following DOES NOT require activation of gene expression (transcription and translation)?
a)
activation of proton pumps
b)
Production of auxin
c)
influx of water
d)
production of expansins
11.
Which tissue allows plants to develop wider stems and roots?
a)
phloem
b)
xylem
c)
Lateral meristems
d)
apical meristems
100 %
