EBK BIOLOGY
11th Edition
ISBN: 8220102797352
Author: Raven
Publisher: YUZU
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Chapter 41, Problem 3S
In wild columbine flower morphology encourages cross-pollination However during the middle of the receptive period of the stigma, self-pollination can occurs if the flower was not previously pollinated If cross-pollination occurs after self-pollination then that pollen reaches the base of the style before the self-pollen. Discuss the adaptive significance of this reproduction strategy.
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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?
Mention two strategies evolved to prevent
self-pollination in flowers.
In wild columbine, flower morphology encourages crosspollination. However, during the middle of the receptive period of the stigma, self-pollination can occur if the flower was not previously pollinated. If cross-pollination occurs after selfpollination, then that pollen reaches the base of the style before the self-pollen. Discuss the adaptive significance of this reproduction strategy.
Chapter 41 Solutions
EBK BIOLOGY
Ch. 41 - Morphogenesis is the development of a. growth...Ch. 41 - Vernalization induces flowering following exposure...Ch. 41 - Prob. 3UCh. 41 - Which of the following is NOT a component of a...Ch. 41 - Megasporcs are produced in a. anthers by mitosis....Ch. 41 - A stamen contains a a. style. b. stigma. c....Ch. 41 - Unlike bee-pollinated flowers, bird-pollinated...Ch. 41 - Prob. 8UCh. 41 - Endosperm is produced by the union of a. a central...Ch. 41 - During the globular stage of embryo development,...
Ch. 41 - Which of the following is NOT a primary meristem?...Ch. 41 - Prob. 12UCh. 41 - The shoot tip of an emerging maize seedling is...Ch. 41 - Asexual reproduction is likely to be most common...Ch. 41 - Prob. 15UCh. 41 - Prob. 16UCh. 41 - Prob. 17UCh. 41 - Prob. 1ACh. 41 - Your roommate is taking biology with you this...Ch. 41 - In Iowa, a company called Team Corn works to...Ch. 41 - Prob. 4ACh. 41 - One of the most notable differences between gamete...Ch. 41 - A plant lacking the WOODEN LEG gene will likely a....Ch. 41 - How would plant development change if the...Ch. 41 - Prob. 8ACh. 41 - Loss-of-function mutations in the suspensor gene...Ch. 41 - Prob. 1SCh. 41 - If you live in a north temperate region, explain...Ch. 41 - In wild columbine flower morphology encourages...Ch. 41 - In most part of the world, commercial potato crops...Ch. 41 - Design an experiment to determine whether light or...
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- Sexual reproduction in plants is considered to be a source of variation creation. How reproduction mechanisms played their role in creating variation and also give view regarding the mechanism that could be responsible for causing a different type of pollinationarrow_forwardMention two strategies evolved lay flowers to prevent self-pollination.arrow_forwardIn their experiments with the flowers of Begonia involucrate, Agren and Schemske (1991) observed that there was a trade-off between what two characteristics? Size of flower and number of flowers on inflorescence Size of flower and pollination Annual versus perennial reproduction O Time and expense to grow the pollen tube versus cost of maintaining the flower on the treearrow_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_forwardIn 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; microsporesarrow_forwardHeterozyus for flower position and stemlength AaTt are allowed to self pollinate. 400 of the resulting seeds are planted. Draw a punnett square for this How many offsprin would be predicted to have terminal flowers and be dwarfarrow_forward
- Define the term pollination. Differentiate between self pollination and cross pollination. What is the significance of pollination?arrow_forwardBoth wind and water pollinated flowers are not very colourful and do not produce nectar. What would be the reason for this?arrow_forwardAmong the animal, insects particularly bees are the dominant pollinating agents. List any four characteristic features of the insect pollinated flower.arrow_forward
- Define the following: Inflorescence, Pollination, Germination and Fertilizationarrow_forwardWhat is the difference between self-pollination and cross-pollination? If pollen is transferred from the stamens of a flower to the stigma of the very same flower, is that cross-pollination or self-pollination? If it is transferredfrom the stamen of one flower to the stigma of another flower on the very same plant? If it is transferred from the stamen of one flower to the stigma of another flower on a different plant, but a plant that is a clone of the first one? Animals do not have pollen, of course, but why is it that most animals never have to worry about the equivalent problem of self-fertilization? Why cannot most animals fertilize themselves?arrow_forwardLook at the flower, observe color, size of petals and height of stamen and pistil. What type of pollination does it present? - Self pollination - wind cross pollination - bird cross politicizationarrow_forward
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