Biology: The Dynamic Science (MindTap Course List)
4th Edition
ISBN: 9781305389892
Author: Peter J. Russell, Paul E. Hertz, Beverly McMillan
Publisher: Cengage Learning
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Textbook Question
Chapter 11, Problem 9TYK
In plants, the adult diploid individuals are called:
a. spores.
b. sporophytes.
c. gametes.
d. gametophytes.
e. zygotes.
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In animals, meiosis produces gametes (sperm cells and egg cells), but that does not happen in plants. When some of the cells of a sporophyte undergo meiosis, what types of cells are produced? What do they grow into?
In the alternation of generations in plants, the gametophyte is _______ and produces gametes by _______. a. haploid; mitosis c. haploid; meiosis b. diploid; mitosis d. diploid; meiosis
What is the ploidy of two daughters of a dividing cell of a hornwort’s gametophyte?
Select one:
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Chapter 11 Solutions
Biology: The Dynamic Science (MindTap Course List)
Ch. 11.1 - How does the outcome to meiosis differ from that...Ch. 11.1 - Prob. 2SBCh. 11.1 - Prob. 3SBCh. 11.2 - Prob. 1SBCh. 11.2 - Consider an animal with six pairs of chromosomes;...Ch. 11.3 - Prob. 1SBCh. 11 - The chromosome constitution number of this...Ch. 11 - Which of the following is not associated with...Ch. 11 - Chiasmata: a. form during metaphase II of meiosis....Ch. 11 - If 2n is four, the number of possible combinations...
Ch. 11 - Prob. 5TYKCh. 11 - The DNA content in a diploid cell in G2 is X. If...Ch. 11 - Metaphase in mitosis is similar to what stage in...Ch. 11 - In the human sperm: a. there must be one...Ch. 11 - In plants, the adult diploid individuals are...Ch. 11 - Prob. 10TYKCh. 11 - Discuss Concepts You have a technique that allows...Ch. 11 - Discuss Concepts One of the human chromosome pairs...Ch. 11 - Prob. 13TYKCh. 11 - Prob. 14TYKCh. 11 - Prob. 15TYKCh. 11 - Prob. 1ITDCh. 11 - Prob. 2ITD
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- Which of the following IS found in basal land plants (Embryophyta), but NOT found in Chara?a. Multicellular gametangia with sterile jacket.b. Diploid mitosis.c. Photoautotrophous gametophyted. Haploid mitosis.e. Sperm cells with two flagellaarrow_forwardIn most female gametophytes with eight nuclei, only the egg and the central cell nuclei do not degenerate. What would happen if the megaspore itself functioned as an egg and did not go on to produce other nuclei in a female gametophyte?arrow_forwardHow does double fertilization occur in flowering plants?a. The two sperm in a pollen tube fertilize the two egg cells present ineach female gametophyte.b. One of the two sperm in a pollen tube fertilizes the single egg in afemale gametophyte, and the other fuses with the two nuclei presentin the central cell.c. Two sperm, one contributed by each of two different pollen tubes,fertilize the two egg cells in a single female gametophyte.d. Two sperm contributed by separate pollen tubes enter a singlefemale gametophyte; one of the sperm fertilizes the egg cell, and theother fertilizes the central cell.e. None of the above is correct.arrow_forward
- . In plants, which of the following are produced by meiosis?(A) haploid gametes(B) diploid gametes(C) haploid spores(D) diploid sporesarrow_forwardThe portion of an embryonic axis that above where the cotyledons are attached and below the first pair of miniature leaves is called?arrow_forwardDouble fertilization in flowering plants occurs when one sperm cell fuses with an egg to form a diploid cell, the ______, and a second sperm fuses with the two nucleiof the central cell of the female gametophyte. This triploid cell will divide mitotically to form a food-storage tissue called the_______ . This food is transferred to the developing plant embryo by structures called_______ .arrow_forward
- One unique feature of fertilization in flowering plants compared with animals is: A. the process involves double fertilization B. plant sperm are motile C. nuclear fusion does not take place D. the gametes are diploid, not haploid. E. multiple ovules exist in the ovaryarrow_forwardHow does a haplontic plant population maintain genetic diversity? a. Zygotes are produced by random fusion. b. Gametes are created through meiosis. c. Diploid spores undergo independent assortment during mitosis. d. The zygote undergoes meiosis to generate a haploid sporophyte.arrow_forwardComplete the following analogies: a. Gametophyte is to haploid as __________ is to diploid. b. __________ are to conifers as flowers are to __________. c. Ovule is to seed as ovary is to __________.arrow_forward
- Which of the following pairs of plant structure has the haploid number ofchromosomes? A. Megaspore mother cell and antipodal cells B. Egg cell and antipodal cells C. Egg cell and endosperms D. Microspore mother cell and antipodal cellsarrow_forwardIn humans, gametogenesis results in the formation ofa. diploid egg and sperm cells.b. gametophytes.c. sporophytes.d. haploid egg and sperm cells.e. a zygote.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
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