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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
gametophyte
B
spermophyte
C
sporophyte
D
eggophyte
2) Flowering plants that live for more than two years are called
A
biennials
B
perennials
C
perpetuals
D
annuals
3) The product of fertilization, when sperm unites with egg, is called
A
spore
B
tropism
C
zygote
D
seed
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
moist
B
hot
C
dry
D
cold
6) Where are seeds made on a gymnosperm?
A
spore cases
B
pollen
C
flower
D
cone
7) How many egg cells form inside each ovule on the female cone?
A
1
B
3
C
4
D
2
8) The female cone stays sealed until
A
the seeds are mature
B
the male cones fall off the tree
C
the weather is wet
D
the pollen knocks on the scales
9) A captured pollen grain on a stigma grows a pollen tube to the
A
fruit
B
ovule
C
anther
D
seed
10) ___ are the means by which angiosperm seeds are dispersed.
A
fruit
B
wind gusts
C
cones
D
animals
11) A mimosa plant closing up after being touched is an example of a
A
positive thigmotropism
B
negative thigmotropism
C
positive gravitropism
D
negative gravitropism
12) A plant stem growing upward after the plant's pot has fallen over is an example of
A
negative gravitropism
B
positive gravitropism
C
negative phototropism
D
negative thigmotropism
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
gibberellin
B
cytokinin
C
auxin
D
epinepherine
14) Which plants flower when the nights are longer than a critical length?
A
long-day plants
B
day-neutral plants
C
short-day plants
15) A plant's response to seasonal changes in the length of night and day is called
A
photoperiodism
B
phototropism
C
critial night length
D
thigmotropism
16) Leaves change color because
A
they went to the salon and got a new color
B
the cold makes their colors change
C
they start making chlorophyll
D
they stop producing chlorophyll
17) Plants do NOT
A
provide homes
B
break down dead things to release their energy into the environment
C
protect the soil
D
provide food
18) Plants are not used for medicines
A
false
B
true
19) Vegetables, fruits, and cereals all come from
A
gymnosperms
B
angiosperms
C
mosses
D
nonvascular plants
20) Conifer sap is used to make
A
paper
B
rayon fibers and cellophane
C
turpentine and rosin
D
rubber
*select an answer for all questions
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