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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Chapter 29, Problem 5TYK
Summary Introduction
Introduction:
Spermatophytes are the plants, which form seeds. They are broadly classified as gymnosperm (plants with naked seeds) and
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Vegetative propagation in liverworts is possible because of propagules known as
gemmae.
Select one:
True
False
Where would you most likely find the megasporangium of an angiosperm?
a. Within an ovule contained within an ovary of a flower
b. In the style of a flower
c. Enclosed in the stigma of a flower
d. Packed into pollen sacs within the anthers found on a stamen
Which of the following plant structures is NOT matched correctly to its function?
a. Stomata allow gas transfer
b. Tracheids allow the movement of water and minerals
c. Cuticle prevents desiccation
d. Plasmodesmata - form a supportive meshwork which acts as a cellular
exoskeleton
The alternation of generations life cycle applies to gymosperms in that:
A. the gametophyte stage is reduced
B. the sporophyte stage is reduced
C. the gametes are produced via meiosis
D. the spores are produced via meiosis
Which statement below is correct regarding the formation of the endosperm in angiosperms?
O the endosperm is formed from the female gametophyte and is haploid
O a single sperm nucleus fertilizes the egg nucleus to become the diploid zygote
O a sperm nucleus forms both the zygote and the endosperm through double fertilization
O a second sperm nucleus fuses with the two polar nuclei of the egg sac
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Chapter 29 Solutions
Biology: The Dynamic Science (MindTap Course List)
Ch. 29.1 - What major reproductive adaptations facilitated...Ch. 29.1 - How did seeds, pollen, and pollination affect the...Ch. 29.2 - Why are gymnosperms called naked seed plants?Ch. 29.2 - Prob. 2SBCh. 29.2 - Summarize the steps of the pine life cycle.Ch. 29.3 - Prob. 1SBCh. 29.3 - Prob. 2SBCh. 29.4 - Prob. 1SBCh. 29.4 - Prob. 2SBCh. 29.5 - Name four major ways human societies rely on seed...
Ch. 29.5 - Prob. 2SBCh. 29 - Prob. 1TYKCh. 29 - Prob. 2TYKCh. 29 - Prob. 3TYKCh. 29 - Prob. 4TYKCh. 29 - Prob. 5TYKCh. 29 - Prob. 6TYKCh. 29 - Prob. 7TYKCh. 29 - Prob. 8TYKCh. 29 - Prob. 9TYKCh. 29 - Adaptations that correlate with the adaptive...Ch. 29 - Prob. 11TYKCh. 29 - Discuss Concepts Modern humans emerged about...Ch. 29 - Discuss Concepts Compare the size, anatomical...Ch. 29 - Prob. 14TYKCh. 29 - Discuss Concepts Working in the field, you...Ch. 29 - Prob. 16TYKCh. 29 - Prob. 1ITDCh. 29 - Prob. 2ITD
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- The three main parts of a typical mature eudicot seed are the _______ . a. pollen grain, egg, and seed coat b. embryo, endosperm, and seed coat c. megaspores, microspores, and ovule d. embryo, cotyledons, and seed coatarrow_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_forwardWhich of the following are found in gymnosperms, as well as in angiosperms? a. Fruits b. Seeds c. Cones d. Flowersarrow_forward
- Answer the following questions: What advantages do flowers give angiosperms over gymnosperms? Describe a probable method for dispersal of each fruit (apple, banana, and orange). What are the major parts (and their functions) of a sunflower?arrow_forwardC. For numbers 21 to 24, match the parts of the flower with what they will develop into after fertilization. A. Endosperm of the seed B. Plant embryo C. Fleshy fruit that can be D. Whole seed E. Seed coat eaten 21. Ovule 23. Polar Nuclei 22. Ovary 24. Eggarrow_forwardMeiosis occurs within the: A. Endosperm B. Petal C. Ovary D. Ovule E. Stigmaarrow_forward
- Which of the following is true regarding germination? a. Imbibition of water is the first step of germination b. All are true regarding germination c. Shoots emerge first, then roots d. The seed coat stays intact during germination e. Freezing and thawing can help start germinationarrow_forwardPresence of all of the following factors promotes dormancy of seeds, except a.Phenolics b.Impermeable seed coat c.Immature embryo d.Gibberellinsarrow_forwardWhat is the main difference between angiosperms and gymnosperms in terms of where the seeds are produced? Where would you look to confirm this with your own observations?arrow_forward
- Answer the following question: How can you distinguish a monocot from a eudicot? How are insects such as bees important for the reproduction of angiosperms? What advantages do flowers give angiosperms over gymnosperms?arrow_forwardAngiosperms are the most diverse group of plants on the planet, by far. However, using flowers for reproduction does have potential disadvantages. Briefly describe two possible challenges (e.g., problems, risks, costs, etc.) that might be associated with using flowers as a reproductive strategy.arrow_forwardGymnosperms were also the first plants to develop pollen . Which of the following statements correctly describes one of the advantages of pollen ?arrow_forward
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