What Is Life? A Guide to Biology with Physiology
4th Edition
ISBN: 9781319065447
Author: Jay Phelan
Publisher: W. H. Freeman
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Chapter 20, Problem 1MC
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Introduction:
Asexual reproduction is relatively rare among plants and is not seen in all habitats.
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a)The leaves on a plant in your garden begin to turn yellow. From this observation alone, can. you predict which nutrient the plant lacks? Explain.
b)How might the fact that plants don’t move influence their ability to adapt to climate change and other environmental changes?
c)Would you expect a changing environment to benefit plants that reproduce sexually or asexually? Explain your reasoning.
Which of the following is an advantage of asexual reproduction? a. Cuttings taken from an adult plant show increased resistance to diseases. b. Grafted plants can more successfully endure drought. c. When cuttings or buds are taken from an adult plant or plant parts, the resulting plant will grow into an adult faster than a seedling. d. Asexual reproduction takes advantage of a more diverse gene pool.
The drooping, bell-like flower Aquilegia canadensis is adapted for cross-pollination. However, if the plant has not been pollinated previously, self-pollination can occur. However, if cross pollination occurs after self-pollination takes place, the pollen from cross pollination reaches the style before the pollen from self-pollination. Using course concepts and vocabulary 1) Provide a reasoning for this phenomenon. 2) Would this adaptation for reproduction be beneficial for the plant?
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What Is Life? A Guide to Biology with Physiology
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- Compare the Venn diagram of sexual reproduction and asexual reproduction in plants. Where in the diagram would you add identical to parent A)a B)b C)c D)darrow_forwardno need to explain just need to know if its a,b,c or d 1.) The life cycles of some plants contains two alternating generations of adults. The diploid adult is called the sporophyte generation and the haploid adult is the gametophyte generation. The diploid plants of the sporophyte generations produce spores by the process of: a.) amitosis b.) meiosis c.) mitosis d.) binary fission 2.) A scientist was examining a human cell with 22 pairs of autosomes, an X chromosome and a Y chromosome. What conclusions can we drawn about the cell? a.) It is a somatic, diploid and male cell. b.) It is a somatic, diploid and female cell. c.) It is a gametic, haploid and male cell. d.) It is a gametic, diploid and male cell. 3.) What will be the number of chromosomes in Turner’s syndrome and Klinefelter's syndrome of an organism whose haploid number is 20? a.) 39 in Turner’s syndrome and 41 in Klinefelter’s syndrome b.) 41 in Turner’s syndrome and 39 in Klinefelter’s syndrome c.) 19 in Turner’s…arrow_forward12) Why do you say that fertilization in seed plants is independent of water? A) Spermatid cells are not necessary for fertilization to occur in seed plants.B) Seed plants use pollen instead of spermatid cells for fertilization.C) Spermatid cells are carried by pollen grains.D) Which spermatid cells in seed plants are capable of resisting desiccation indefinitely.arrow_forward
- Plant breeders use colchicine to A) prevents cytokinesis in somatic cells B) increase the occurrence of unequal crossing over events during meosis C) stop the segregation of homologous chromosomes during meiosis D)  triggers the production of haploid gametes and diploid organismarrow_forwardThe most notable differences between gamete formation in most animals and gamete formation in plants is that ______________. a) plants produce gametes in somatic tissue, whereas animals produce gametes in germ tissue b) plants produce gametes by mitosis, whereas animals produce gametes by meiosis c) plants produce only one of each gamete, but animals produce many gametes d) plants produce gametes that are diploid, but animals produce gametes that are haploidarrow_forwardIn plant reproduction, fertilization occurs when the male and female sex cells form ______________. * Choose the right answer: a.) a clone b.) a sprout c.) a petal d.) a seedarrow_forward
- Fertilization in plants occurs in the –a) Embryo sacb) Stylec) Pollen tubed) Stigmaarrow_forwardIdentify which of the following statements is a lie?Select one: a. Budding yeasts first start from being a haploid cell and further becomes a diploid cell. b. Budding yeasts secrete a signaling molecule called a “mating factor”. c. The mating factor in the sexual reproduction of yeast is directed to all yeast cells in the vicinity.arrow_forwardWhich of the following statements regarding plants is false?a. Meiosis within anthers produces spores that develop intopollen.b. Meiosis within ovules produces spores that develop into anembryo sac.c. The male gametophyte is a pollen grain, and the femalegametophyte is an embryo sac.d. Meiosis directly produces sperm and egg cells in plantsarrow_forward
- Under which of the following conditions would pollen from an S2S5 plant successfully pollinate an S1S5 flower? a. Using pollen from a carpelate flower to fertilize a staminate flower would be successful. b. If the plants used gametophytic self-incompatibility, half of the pollen would be successful. c. If the plants used sporophytic self-incompatibility, half of the pollen would be successful. d. Pollen from an S2S5 plant can never pollinate an S1S5 flower.arrow_forwardWhy is parthenogenesis in bees considered to be a form of asexual reproduction? Select one: a. The male drone is made from a haploid egg. Fertilization is not part of the process to make a male drone. b. The formation of the original haploid cell was achieved using binary fission. c. Although genetic material is transferred from one cell to another using conjugation, the resulting cells will be identical to each other. d. The haploid male bees were made through the process of meiosis, so they are identical to the parent egg cell.arrow_forwardIn plant life cycles, (a) the first products of meiosis are gametes (b) spores are part of the diploid sporophyte generation (c) the embryo gives rise to a zygote (d) the first stage in the diploid sporophyte generation is the zygote (e) the first stage in the haploid gametophyte generation is the prothallusarrow_forward
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