WorksheetsTEKS 10B Plant Resp & Repro
Total questions: 30
Worksheet time: 22mins
Name
Class
Date
1.
Which of the following is NOT part of the female structure of a flower?
a)
filament
b)
stigma
c)
style
d)
ovary
2.
A pollen grain landing on a stigma of a flower of the same species produces a
a)
gametophyte
b)
pollen tube
c)
egg
d)
sporophyte
3.
In angiosperms, pollen grains are
a)
diploid, and are made when haploid gametes join in fertilization.
b)
diploid, and are made when haploid gametophytes join in pollination.
c)
haploid, and are made when haploid spores undergo mitosis.
d)
haploid, and are made when haploid ovules undergo meiosis.
4.
In angiosperms, a zygote and endosperm form as a result of
a)
germination.
b)
double fertilization.
c)
pollination.
d)
seed dispersal.
5.
Which of these statements is true of grafting?
a)
Grafting allows horticulturalists combine pollen grains and egg cells together from two species to make a genetic hybrid.
b)
Grafting can be used to make a plant that produces more than one species of fruit.
c)
Grafting is a way to produce many plants all at once that are all identical to each other.
d)
Grafting is the same as sexual reproduction, except that it takes place between two different species.
6.
The closing of the leaves of a Venus’ flytrap is called a
a)
stimulus
b)
tropism
c)
rapid response
d)
hormonal response
7.
What pigment regulates the changes in activity that prepare plants for winter?
a)
anthocyanin
b)
chlorophyll
c)
ethylene
d)
phytochrome
8.
A commercial flower grower could induce winter flowering of a long-day plant by
a)
fertilizing the plant with nitrogen.
b)
treating the plant with gibberellin.
c)
covering the plant with an opaque cloth in the late afternoon.
d)
exposing the plant to a brief period of light in the middle of the night.
9.
Today scientists know that photoperiodicity in plants depends primarily on
a)
hours of darkness.
b)
intensity of light.
c)
degree of temperature.
d)
amount of phytochromes.
10.
Spinach and lettuce are examples of long-day plants. What stimulus causes them to flower?
a)
short nights
b)
presence of insects
c)
high temperatures
d)
rainfall
11.
A plant that grows in the direction of a light source is displaying
a)
gravitropism
b)
phototropism
c)
negative tropism
d)
thigmotropism
12.
The growth of plant roots in the downward direction is an example of
a)
gravitropism
b)
photoperiodism
c)
phototropism
d)
thigmotropism
13.
Which of the following plant hormones stimulates stem branching?
a)
Auxins
b)
Cytokinins
c)
Ethylene
d)
Gibberellins
14.
Auxins are responsible for which phenomenon (phenomena) in plants?
a)
1 (I) only
b)
3 (III) only
c)
1 (I) and 2 (II) only
d)
2 (II) and 3 (III) only
15.
During pollination in seed plants, pollen grains
a)
swim to female reproductive structures through water.
b)
are carried from a female cone or flower to a male cone or flower.
c)
carry zygotes to the female structures, which form seeds
d)
are carried to female reproductive structures by wind or animals.
16.
All of the following are functions of auxins except promoting
a)
apical dominance.
b)
cell elongation in stems.
c)
the growth of lateral buds.
d)
the growth of new roots.
17.
The responses of plants to environmental stimuli such as light and gravity are called
a)
tropisms
b)
auxins
c)
dormancy
d)
cytokinins
18.
What hormones influence the loss of leaves in winter?
a)
Auxin and ethylene
b)
Anthocyanin and phytochrome
c)
Gibberellin and auxin
d)
Phytochrome and gibberellin
19.
A student carried out an investigation about phototropism. The diagram illustrates the results. Which hypothesis would be supported by the observed results shown?
a)
Auxins inhibit plant growth.
b)
Auxins regulate branching in plants.
c)
Auxins regulate plant growth in response to gravity.
d)
Auxins are transported to shaded areas, stimulating cell elongation.
20.
Which statement about the specialized leaves that make up a flower is true?
a)
Stamens are often brightly colored and found just inside sepals.
b)
Carpels consist of a filament an an anther.
c)
Petals are made up of a style, a stigma, and an ovary.
d)
Sepals are green and often wrapped around petals before a flower blooms.
21.
Which of the structures of a flower are the male sexual organs?
a)
Petals
b)
Stamens
c)
Carpels
d)
Sepals
22.
All of the following features of fertilization are characteristic of angiosperms except
a)
pollination.
b)
double fertilization
c)
the production of an internal fluid.
d)
the production of male and female gametophytes.
23.
How is fertilization in angiosperms different from fertilization in other types of plants?
a)
It involves two separate events that produce the zygote and endosperm.
b)
It does not require both male and female organs.
c)
It can occur within a single plant only.
d)
It produces offspring that are genetically identical.
24.
What is one way that the characteristics of angiosperm reproduction is related to angiosperm success?
a)
They produce many more seeds than other types of plants.
b)
They generally produce seeds that are capable of floating.
c)
They produce large numbers of spores that are easily dispersed.
d)
They often have flowers that attract pollinators.
25.
What happens during vegetative reproduction?
a)
New combinations of genetic traits are produced.
b)
A single plant produces offspring genetically identical to itself.
c)
A male gametophyte fuses with a female gametophyte.
d)
Multiple copies of identical flowers bloom on the same plant.
26.
How do fruits form?
a)
A pollen granule fuses to the stigma of a flower.
b)
Flower petals become sealed around an embryo.
c)
Ovary walls thicken around a seed.
d)
A pollen grain develops in a pollen tube.
27.
What is an advantage of sexual reproduction over asexual reproduction in flowering plants?
a)
In sexual reproduction, new combinations of genetic traits are produced that aid in survival.
b)
In sexual reproduction, minimal resources are required to produce offspring.
c)
In sexual reproduction, new plants can grow rapidly in a favorable environment.
d)
In sexual reproduction, identical offspring are produced in large numbers.
28.
Which evidence supports the conclusion that a pumpkin is a fruit?
a)
It has radial symmetry.
b)
It grows from a plant.
c)
It does not contain seeds.
d)
It forms from the ovary of a flower.
29.
How will cutting the tips of the branches on one side of a tree affect the shape of the tree?
a)
It will keep the lateral buds on the uncut side from growing.
b)
It will cause the lateral buds on the uncut side to grow faster in response.
c)
It will keep the lateral buds on the cut side from growing.
d)
It will cause the lateral buds on the cut side to grow more quickly.
30.
In angiosperms, pollen grains are produced in
a)
anthers
b)
carpels
c)
ovules
d)
sepals
100 %
