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