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Meiosis will produce microspores in the _____. |
anther |
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In angiosperms, each pollen grain produces two sperm. What do these sperm do? |
One fertilizes an egg, and the other combines with two polar nuclei, which develop into stored food cells (endosperm). |
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The germination of seeds _____. |
depends on imbibition |
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Which association below is correct? |
dioecious … separate female and male plants |
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Which of the following is an example of sexual reproduction? |
fusion of sperm and egg nuclei in an ovule |
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Which of the following is an advantage of asexual reproduction in plants? |
enhanced survival of genetically favorable offspring |
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Self-incompatibility _____. |
helps maintain genetic variability in a population |
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In grafting, the plant that provides the root system is the _____ and the twig is the _____. |
stock…scion |
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Select the correct statement about double fertilization in the angiosperm life cycle. |
Double fertilization produces a diploid sporophyte and a triploid endosperm. |
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Which of these represents the male gametophyte generation of an angiosperm? |
cells within a pollen grain |
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Which of these structures is/are produced by fertilization of egg and sperm? |
an embryonic sporophyte |
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Which of these represents the female gametophyte generation of an angiosperm? |
an embryo sac |
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Select the correct statement(s) about angiosperm seeds. A. The embryo in an angiosperm seed is the offspring of the sporophyte plant. |
B. An angiosperm seed contains structures contributed by three generations of plants |
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A fruit is _____. |
a mature ovary |
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Double fertilization means that _____. |
one sperm is needed to fertilize the egg, and a second sperm is needed to fertilize the polar nuclei. |
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The black dots that cover strawberries are actually individual fruits. The fleshy and tasty portion of a strawberry derives from the receptacle of a flower with many separate carpels. Therefore, a strawberry is |
both an aggregrate fruit and an accessory fruit. |
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Many aspects of the angiosperm life cycle make flowering plants particularly well-suited to life on land. In fact, angiosperms are the most diverse and widespread of all plants. Which six of the following statements reflect angiosperm adaptations to life on land? |
-Flowers attract animal pollinators carrying pollen from other plants of the same species -Fruits aid in the dispersal of seeds by wind or by animals that carry or eat the fruits. -In many angiosperms, the male gametophyte contained in a pollen grain can be transported many miles away by wind or animal pollinators. -Floral parts of the sporophyte protect the reduced female gametophyte from drying out and from UV radiation. -Seeds protect and nourish plant embryos, and fruits protect the seeds. -Seeds enable plant embryos to be dispersed long distances from the parent plant via wind or animals |
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