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Samuels BIO Special Leaves
Test Description: Biology special leaves and fall colors.
Instructions: Answer all questions to get your test result.
1) This is the term for trees that undergo color change in the fall
A
gymnosperm
B
conifer
C
angiosperm
D
deciduous
2) Color change in leaves is triggered mainly by what factor?
A
water
B
access to carbon dioxide
C
temperature
D
length of day and night
3) The dominant pigment in plants is
A
carotene
B
anthocyanin
C
xanthophyll
D
chlorophyll
4) The yellowish-orange colors are produced by this pigment
A
anthocyanin
B
xanthophyll
C
carotene
D
chlorophyll
5) This cuts leaves from the stem at the base of the petiole of a leaf
A
epidermis
B
transpiration
C
abscission layer
D
guard cells
6) The enzyme involved in weakening cells preparing a leaf to be cut off is
A
nuclease
B
hydrogenase
C
cellulase
D
synthase
7) High rates of transpiration happens when sufficient water cannot be pulled to leaves. This leads to
A
wilting
B
turgor pressure
C
turgidity
D
blooming
8) These special leaves hold a vine upright by coiling around a support structure.
A
tendrils
B
bract
C
spines
D
insectivorous
9) These special leaves contain no chlorophyll and serve as protection to the plant.
A
spines
B
bract
C
tendrils
D
insectivorous
10) These plants contain special leaves that consume insects to obtain nitrogen.
A
spines
B
tendrils
C
insectivorous
D
bract
*select an answer for all questions
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