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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- 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.Which statement below is correct regarding the formation of the endosperm in angiosperms? O the endosperm is formed from the female gametophyte and is haploid O a single sperm nucleus fertilizes the egg nucleus to become the diploid zygote O a sperm nucleus forms both the zygote and the endosperm through double fertilization O a second sperm nucleus fuses with the two polar nuclei of the egg sac МacВook Pro G Search or type URL @ 2# $ & * 2 3 4 6 8 W E R YDefine the following: Inflorescence, Pollination, Germination and Fertilization
- During double fertilization, one sperm will unite with the egg, forming a zygote. As mentioned in the lecture, a generative cell divides to form two sperm. How is the second sperm used during the process of double fertilization? 00 00 It fertilizes the flower by landing directly on the stigma, which is the sticky surface found above a flower's style and ovary. This depends on the type of plant. Land plants will allocate the sperm that is not united with the egg to the formation of different tissues through mitosis and cytokinesis. It forms a triploid cell by fusing with polar nuclei. This cell then divides and develops endosperm tissue. Since it was not the sperm to fuse with the polar nuclei, the sperm cell will degenerate.After pollination and then fertilization, what usually happens to each of the following: stigma, style, carpel, ovule, integuments, and zygote?Answer the following question: What is meant by “double fertilization”? What features of seeds and fruits have enabled angiosperms to become so widespread?
- Why is fertilization in flowering plants called double fertilization? two cells in the ovule are fertilized, the egg and the endosperm mother cell it takes the efforts of two flowers (male and female) to produce seeds two ovules must be fertilized to form a single seed one pollen grain fertilizes two ovules it takes two pollen grains to fertilize a single ovuleDescribe the transition from an ovary/ovule to a fruit. Explain the evolutionary advantage of fruits. Describe the process of seed development in an immature ovary of a flower.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?
- In a typical angiosperm, what is the sequence of structures encountered by the tip of a growing pollen tube on its way to the egg? ovary → style → stigma stigma → style → ovary ovary→ stigma→ style stigma→ ovary → styleAn 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 seedsIn the mature angiosperm seed, the nutritive tissue is triploid. This tissue is formed from; Two polar nucleii fusing with a sperm cell The synergids fusing with a sperm cell The sperm fusing with the egg cell The embryo