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Ch 7, Les 4-6 (7th Grade)
Test Description: Plants
Instructions: Answer all questions to get your test result.
1) In the ___ stage, the plant produces sperm and egg cells.
A
sporophyte
B
eggophyte
C
gametophyte
D
spermophyte
2) Flowering plants that live for more than two years are called
A
biennials
B
annuals
C
perpetuals
D
perennials
3) The product of fertilization, when sperm unites with egg, is called
A
zygote
B
spore
C
seed
D
tropism
4) Asexual reproduciion can reproduce unfavorable traits since there is no new genetic info being passed on to offspring.
A
false
B
true
5) Mosses, ferns, and hornworts all live in ___ environments.
A
dry
B
moist
C
hot
D
cold
6) Where are seeds made on a gymnosperm?
A
pollen
B
cone
C
flower
D
spore cases
7) How many egg cells form inside each ovule on the female cone?
A
4
B
3
C
1
D
2
8) The female cone stays sealed until
A
the pollen knocks on the scales
B
the seeds are mature
C
the weather is wet
D
the male cones fall off the tree
9) A captured pollen grain on a stigma grows a pollen tube to the
A
fruit
B
seed
C
anther
D
ovule
10) ___ are the means by which angiosperm seeds are dispersed.
A
wind gusts
B
fruit
C
animals
D
cones
11) A mimosa plant closing up after being touched is an example of a
A
positive gravitropism
B
negative thigmotropism
C
positive thigmotropism
D
negative gravitropism
12) A plant stem growing upward after the plant's pot has fallen over is an example of
A
positive gravitropism
B
negative thigmotropism
C
negative phototropism
D
negative gravitropism
13) A plant hormone that speeds up the rate at which a plant's cells grow and controls a plant's response to light
A
epinepherine
B
auxin
C
gibberellin
D
cytokinin
14) Which plants flower when the nights are longer than a critical length?
A
day-neutral plants
B
short-day plants
C
long-day plants
15) A plant's response to seasonal changes in the length of night and day is called
A
photoperiodism
B
thigmotropism
C
phototropism
D
critial night length
16) Leaves change color because
A
they went to the salon and got a new color
B
they start making chlorophyll
C
the cold makes their colors change
D
they stop producing chlorophyll
17) Plants do NOT
A
provide food
B
protect the soil
C
break down dead things to release their energy into the environment
D
provide homes
18) Plants are not used for medicines
A
true
B
false
19) Vegetables, fruits, and cereals all come from
A
gymnosperms
B
nonvascular plants
C
angiosperms
D
mosses
20) Conifer sap is used to make
A
rayon fibers and cellophane
B
rubber
C
turpentine and rosin
D
paper
*select an answer for all questions
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