Biological Science (7th Edition)
7th Edition
ISBN: 9780134678320
Author: Scott Freeman, Kim Quillin, Lizabeth Allison, Michael Black, Greg Podgorski, Emily Taylor, Jeff Carmichael
Publisher: PEARSON
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Textbook Question
Chapter 28, Problem 3TYK
What is a pollen grain?
a. male gametophyte
b. female gametophyte
c. male sporophyte
d. sperm
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Chapter 28 Solutions
Biological Science (7th Edition)
Ch. 28 - What important role does lignin play in vascular...Ch. 28 - Prob. 2TYKCh. 28 - What is a pollen grain? a. male gametophyte b....Ch. 28 - 5. What does it mean to say that a life cycle is...Ch. 28 - 6. SOCIETY Soils, water, and the atmosphere are...Ch. 28 - Prob. 7TYUCh. 28 - Explain the difference between homosporous and...Ch. 28 - Angiosperms such as grasses, oaks, and maples are...Ch. 28 - PROCESS OF SCIENCE You have been hired as a field...Ch. 28 - Is long-distance sex possible in mosses?
Moss...
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- In 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_forwardWhich of the following traits characterizes gymnosperms? a. The plants carry exposed seeds on modified leaves. b. Reproductive structures are located in a flower. c. After fertilization, the ovary thickens and forms a fruit. d. The gametophyte is longest phase of the life cycle.arrow_forwardCompare what happens to a spore mother cell as it gives rise to a spore with what happens to a spore as it gives rise to a gametophyte. a. The spore mother cell and the spore both go through meiosis. b. The spore mother cell and the spore both go through mitosis. c. The spore mother cell goes through mitosis, and the spore goes through meiosis. d. The spore mother cell goes through meiosis, and the spore goes through mitosis.arrow_forward
- What is the ploidy of the following structures: gametophyte, seed, spore, sporophyte? a. 1n, 1n, 2n, 2n b. 1n, 2n, 1n, 2n c. 2n, 1n, 2n, 1n d. 2n, 2n, 1n, 1narrow_forwardA yellow dust appears on the fingers, whenever we touch the middle of a flower. These tiny yellow grains are one of the most precious substances in nature because they contain the secret of plant life. What is this dust called? A. Pollen B. Sperm C. Spore D. Sporocystarrow_forwardWhich of the following cell types is responsible for cavitation-induced spore dispersal in most ferns? A. stipe cells B. indusium cells C. oogonia cells D. annular cellsarrow_forward
- Which group of plants bears stomata only in the sporophyte generation? a. Chrysophyta b. Anthocerophyta c. Bryophyta d. Marchantiophyta Which of the following is not a characteristic that distinguishes gymnosperms and angiosperms from other plants? a. Pollen b. Dependent gametophytes c. Ovules d. Alternation of generations Which of these statements is an incorrect comparison of a pine cone and a flower in terms of structure and function? a. Pine cones and flowers both have gametophytes and modified leaves that produce spores. b. All of the statements are correct. c. Unlike pine cones, many flowers produce both pollen and ovules. d. Pine trees have separate pollen cons and ovulate cones while in flowers, pollen grains are produced by the anthers of stamens, and ovules are within the ovaries of carpels.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_forwardFill in the blank with the term that best completes the sentence. 21. Switching between a haploid gametophyte stage and a diploid sporophyte stage is called 22. gives plant stems stiffness and helps protect plants against predators. 23. Nonvascular plants use for absorbing water. 24. Asexual reproduction from stems, leaves, or roots is called occurs when a growing plant embryo bursts through the seed coat. 25. 26. Liverworts, hornworts, and mosses are all plants. 27. Another name for vascular plants i , 28. stores food in seed plants. 29. In a flower the contains the stigma, style, and ovary. 30. The protects the seed.arrow_forward
- How would a loss-of-function mutation in the α-amylase gene affect seed germination? a. The seed could not imbibe water. b. The embryo would starve. c. The seed coat would not rupture. d. The seed would germinate prematurely.arrow_forwardWhich suite of reproductive features distinguishes angiosperms from gymnosperms? A. The carpel, double fertilisation, endosperm formation B. Pollen-formation, double fertilisation, seed-formation C. Pollen-formation, the carpel, double fertilisation, endosperm formation D. The carpel, double fertilisation, endosperm formation, seed-formationarrow_forwardWhat is the flower symmetry of a yellow bell? Why? a. Bilateral/ Zygomorphic b. Actinomorphic/ Radialarrow_forward
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