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Plant Science (HL)
Test Description: Questions to review Topic 9 (Plant science)of IB Biology syllabus
Instructions: Answer all questions to get your test result.
1) Which would be an adaptation of xerophytes?
A
Reduced roots
B
Large numbers of stomata
C
Large air spaces
D
Hairs on the leaves
2) Which is a characteristic of xerophytes?
A
Large number of stomata
B
Absence of roots
C
Leaves with a very small surface area
D
Absence of vascular tissue
3) What causes movement of water through xylem?
A
Active translocation
B
Evaporatoin of water from leaves
C
Active transport in the root tissue
D
Gravity
4) When a farmer sprays a chemical on crop plants, how does the chemical travel to the roots of the plants?
A
In the xylem, by active translocation
B
In teh phloem, by transpiration pull
C
In the xylem, by transpiration pull
D
In the phloem, by active translocation
5) Fertilization, pollination and seed dispersal all occur during the reproduction of a flowering plant. In what sequence do these processes occur?
A
seed dispersal, pollination, fertilization
B
fertilization, pollination, seed dispersal
C
seed dispersal, fertilization, pollination
D
pollination, fertilization, seed dispersal
6) Which of the following is a CORRECT comparison of the bryophytes and the filicinophytes?
A
Bryophytes have true leaves, while filicinophytes have scales
B
Bryophytes have woody tissue, while filicinophytes do not have woody tissue
C
Bryophytes have waxy cuticles, while filicinophytes do not have waxy cuticles
D
Bryophytes have rhizoids, while filicinophytes have roots
7) What conditions will cause the highest rate of transpiration in a well-watered, mesophytic plant?
A
Low humidity, hot, bright sunshine and windy
B
Windy, bright sunshine, humid and cool
C
Windy, hot, cloudy and humid
D
Hot, humid with bright sunshine and still air
8) In what direction does the phloem transport materials?
A
Down the plant only
B
Up the plant at night and down the plant during the day
C
Up the plant only
D
Up and down the plant all the time
9) What treatment is most likely to lead to germination?
A
Increasing CO2 concentration
B
Increasing light intensity
C
Soaking the seeds in a solution of gibberellins
D
Dehydrating the seeds
10) In flowering plants, which of the following helps seed dispersal?
A
pollen
B
mammals
C
germination
D
bees
*select an answer for all questions
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