Life: The Science of Biology
11th Edition
ISBN: 9781319010164
Author: David E. Sadava, David M. Hillis, H. Craig Heller, Sally D. Hacker
Publisher: W. H. Freeman
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Chapter 37.1, Problem 1R
Summary Introduction
To review:
The importance of pollen tube in the process of
Introduction:
The pollen grain or the male microgametophyte consists of two cells. One is called tube cell and other one is a generative cell. The tube cell leads to the formation of the pollen tube, which is directly related to the landing of microgametophyte on the stigma of the female reproductive organ, that is, carpel.
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- _______ is a useful method of asexual reproduction for propagating hard-to-root plants grafting layering cuttings buddingarrow_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_forwardFigure 14.26 If a flower lacked a megasporangium, what type of gamete would it not be able to form? If it lacked a microsporangium, what type of gamete would not form?arrow_forward
- Meiosis of cells in pollen sacs forms haploid _________. a. megaspores b. microspores c. stamens d. spomphytesarrow_forwardIf there are 4 cells in anthers, what will be the number of pollen grains?arrow_forwardHow are the pollen grains of flowering plants different from those of pine trees?arrow_forward
- How can plants reproduce asexually naturally? Using pollen Using cuttings Using runnersarrow_forwardAfter pollen lands on a stigma, it is far away from the ovule with the megagametophyte, which holds the egg (the megagamete). How are the two sperm cells transported from the stigma to the egg?arrow_forwardWhich plant groups produce pollen, and what is the adaptive value of pollen?arrow_forward
- Are fern spores haploid or diploid? Are the spores proudced by meiosis or mitosis? Where are the spores produced?arrow_forwardThe part of gynoecium that determines the compatible nature of pollen is: (a) stigma (b) style (c) ovary (d) synergidsarrow_forwardWhat would happen if the megaspore itself functioned as an egg and did not go on to produce other nuclei in a female gametophyte?arrow_forward
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Plant Reproduction in Angiosperms; Author: Amoeba Sisters;https://www.youtube.com/watch?v=HLYPm2idSTE;License: Standard YouTube License, CC-BY