BIOLOGY:HOW LIFE WORKS-W/ACCESS
3rd Edition
ISBN: 9781319513481
Author: Morris
Publisher: MAC HIGHER
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Chapter 31.2, Problem 4SAQ
Summary Introduction
Each plant species alternates among two multicellular forms, which includes a haploid gametophyte generation (makes gametes) and a diploid sporophyte generation (makes spores). The gametophyte generation starts with a haploid spore, which is generated by meiosis. The gametophyte generates gametes by mitosis and sexual reproduction. This resulting in diploid sporophyte generation.
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- Can you answer all the parts to this question please (a) What are the advantages of the self-incompatibility (SI) system in plants? Give at least three advantages. (b) What are the differences between gametophytic SI and sporophytic SI?arrow_forwardWhat is a seed? What are four key adptations common in seed plants? What are the advantages of reduced gametophyte?arrow_forwardThe megaspore in most flowering plants grows into a megagametophyte that has seven cells and eight nuclei. Name and describe the seven cells.arrow_forward
- Describe the alternation-of-generations life cycle,including the role of the sporophyte and gametophytegenerationsarrow_forwardThe zygote divides only after the division of the primary endosperm cell. Give reasons in support of the statement.arrow_forwardIs gamete producing hiploid gametophyte and spore produce diploid sporophytes?arrow_forward
- What event begins the gametophyte phase of the life cycle? Where does this event occur in liverworts and mosses?arrow_forwardWhich of the following comparisons between the moss life cycle and fern life cycle are correct? A) Mosses have flagellated sperm that need water to reach the female gamete, while the sperm of ferns are unflagellated and are not dependent on water.B) The sporophyte generation is smaller than the gametophyte generation in mosses, but the sporophyte generation is much larger than the gametophyte generation in ferns.C) The spores are produced in capsules on stalks in mosses but in small structures called sori on the underside of leaves in ferns.D) The gametes are produced in gametangia in mosses but in specialized structures on the underside of leaves in ferns.E) Both kinds of plants depend on wind for dispersal of spores.arrow_forwardIs the prothallium sporophyte or gametophyte?arrow_forward
- Which of the following processes occurs in a plant's sexual life cycle? sporophytes produce gametes by meiosis sporophytes produce gametes by mitosis gametophytes produce gametes by meiosis gametophytes produce gametes by mitosisarrow_forwardWhat is the endosperm? From which cell of the female gametophyte is it derived? Compare the storage site of endosperm in monocot and dicot seeds.arrow_forwardwhat is the function of flower petal in plant reproduction?arrow_forward
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