Which of the following events must occur before fertilization can happen? -Double meiosis -seed coat formation -endosperm formation -Pollination -fruit development
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- The three main parts of a typical mature eudicot seed are the _______ . a. pollen grain, egg, and seed coat b. embryo, endosperm, and seed coat c. megaspores, microspores, and ovule d. embryo, cotyledons, and seed coatIn flowers, the structures that produce male gametophytes are called _______ ;the strcutures that produce female gametophytes are called _______ . a. pollen grains; flowers c. anthers; stigma b. stamen; carpels d. megaspores; microsporesDouble fertilization is important to the reproductive process of an angiosperm because it produces: -a reaction that keeps the plant from dying. -nutrition for the seed. -both the zygote and the endosperm. -a double portion of endosperm. -None of these choices are true.
- Answer the following question: What is meant by “double fertilization”? What features of seeds and fruits have enabled angiosperms to become so widespread?Which of the following sequence represents the events that take place in the development of a fruit? -pollination, fertilization, germination of pollen tubes, ovule matures, embryo forms. -pollination, double fertilization, ovule matures, embryo forms within the seed, ovary matures around the seeds. -pollination, fertilization, embryo development within the seed, ovary matures around the seeds. -pollination, germination of pollen, endosperm, ovule. -pollination, endosperm formation, embryo development within the seed, ovule matures.Answer the following questions: What is meant by “double fertilization”? What features of seeds and fruits have enabled angiosperms to become so widespread? What are the similarities and differences between cones and flowers?
- After pollination and fertilization, as the ovule develops into a seed, the ovary matures into a _________________. Many of these have three parts. The _________________ is the skin or peel. The ________________________ is the flesh, and the innermost layer, the ____________________, may be tough like the pit of a cherry.An angiosperm which is unable to form fruits would likely have which of the following defects? it would not be able to attract pollinators it would not be able to provide nutrients to the embryo • it would not be able to disperse seeds it would not be able to form seedsAfter fertilization, the _______________ develop(s) into a fruit and the _______________ develop(s) into a seed. (a) ovary; ovule (b) polar nuclei; ovule (c) ovary; endosperm (d) ovule; ovary (e) ovule; polar nuclei
- Define the following: Inflorescence, Pollination, Germination and FertilizationIn seed-bearing plants, the _______________ develops into the seed following fertilization The microsporangium. The sporophyte. The endosperm. The ovule. The pollen grain.Which of the following is mismatched? anther - female stigma - female pollen - male ovule - female stamen - male