Campbell Biology (11th Edition)
11th Edition
ISBN: 9780134093413
Author: Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Jane B. Reece
Publisher: PEARSON
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Textbook Question
Chapter 30, Problem 3TYU
With respect to
- (A) egg—n
- (B) megaspore—2n
- (C) microspore—n
- (D) Zygote—2n
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This figure summarises the life cycle of a seed plant. The blue circles named A and B represent the sexually mature individual of each phase of the life cycle.
1) What is this life cycle called?
2) Plant B is in the diploid phase. What is another name for this plant?
3) If A is the haploid phase, in which phase would you find sepals? Write just the letter of the individual corresponding to the correct phase
4) If B is the haploid phase, in which phase would you find synergids? Write just the letter of the individual corresponding to the correct phase
5) If B is the diploid phase, in which phase would you find the nucellus? Write just the letter of the individual corresponding to the correct phase
6) If A is the diploid phase, in which phase would you find the sperm cells? Write just the letter of the individual corresponding to the correct phase
7) If A is the diploid phase, in which phase would you find selection on flower colour? Write just the letter of the individual corresponding…
Cleistogamous flowers are invariably autogamous because”
(a) These flowers do not open at all.
(b) There is no chance of cross – pollen landing on the stigma.
(c) These flowers have exposed anthers and stigma.
(d) These flowers are wind pollinated.
The cells of endosperm have 24 chromosomes. What will be the number of chromosomes in the gametes ?
(a) 8
(b) 16
(c) 23
(d) 32
Chapter 30 Solutions
Campbell Biology (11th Edition)
Ch. 30.1 - Contrast how sperm reach the eggs of seedless...Ch. 30.1 - What features not present in seedless plants have...Ch. 30.1 - WHAT IF? If a seed could not enter dormancy, how...Ch. 30.2 - Use examples from Figure 30.7 to describe how...Ch. 30.2 - Explain how the pine life cycle in Figure 30.4...Ch. 30.2 - Prob. 3CCCh. 30.3 - It is said that an oak is an acorns way of making...Ch. 30.3 - Compare and contrast a pine cone and a flower in...Ch. 30.3 - WHAT IF? Do speciation rates in closely related...Ch. 30.4 - Explain why plant diversity can be considered a...
Ch. 30.4 - Prob. 2CCCh. 30 - Describe how the parts of an ovule (integument....Ch. 30 - Although there are fewer Ihan 1,000 spedes of...Ch. 30 - Explain why Darwin called the origin of...Ch. 30 - Prob. 30.4CRCh. 30 - Where in an angiosperm would you find a...Ch. 30 - Prob. 2TYUCh. 30 - With respect to angiosperms, which of the...Ch. 30 - Which of thc following is not a characteristic...Ch. 30 - Gymnosperms and angiosperms liave tlie following...Ch. 30 - DRAW IT Use the letters a-d to label where on the...Ch. 30 - EVOLUTION CONNECTION The history of life has been...Ch. 30 - Prob. 8TYUCh. 30 - WRITE ABOUT A THEME: ORGANIZATION Cells arc the...Ch. 30 - Prob. 10TYU
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- In a typical angiosperm, what is the sequence of structures encountered by the tip of a growing pollen tube on its way to the egg? ovary → style → stigma stigma → style → ovary ovary→ stigma→ style stigma→ ovary → stylearrow_forwardIdentify each of the following structures as haploid or diploid.(A) sporophyte(B) spore(C) gametophyte(D) zygotearrow_forwardSome dioecious species have the XY genotype for male andXX for female. After double fertilization, what would be thegenotypes of the embryos and endosperm nuclei?(A) embryo XY/endosperm XXX or embryo XX/endosperm XXY(B) embryo XX/endosperm XX or embryo XY/endosperm XY(C) embryo XX/endosperm XXX or embryo XY/endosperm XYY(D) embryo XX/endosperm XXX or embryo XY/endosperm XXYarrow_forward
- Which of the following statements is accurate? a) All plants have identical sporangia, all producing the same type of spores b) Plants have an embryo that is protected inside (and nourished by) the gametophyte c) Gametangia produce gametes by meiosis whereas sporangia produce spores by mitosis d) Gametangia always produce haploid gametes whereas sporangia produce diploid spores e) Gametangia are multicellular structures whereas sporangia are unicellular structuresarrow_forwardAnswer the diagram attached below: Determine the following structures with its ploidy level [Haploid (n) or Diploid (2n)] a) Pine Ovule with Developing Megagametophyte b) Pine Ovule with Mature Megagametophytearrow_forwardWhere in an angiosperm would you finda megasporangium?(A) in the style of a flower(B) enclosed in the stigma of a flower(C) within an ovule contained within an ovaryof a flower(D) packed into pollen sacs within the anthers found on astamenarrow_forward
- Chrysopogon aciculatus is placed under microscope. When crushed, the seed is visible. Apparently, this species of plant is angiosperm. So how do I draw the diagram of the seed(?) for Chrysopogon aciculatus? Do i have to draw just the seed with a fruit coating or do i have to draw the stamen/ovary/stigma etc of Chrysopogon aciculatus' floret?. Attached is a picture of supposedly an angiosperm of Chrysopogon aciculatus , but how do i draw the seed diagram(?)arrow_forwardIn plant life cycles, (a) the first products of meiosis are gametes (b) spores are part of the diploid sporophyte generation (c) the embryo gives rise to a zygote (d) the first stage in the diploid sporophyte generation is the zygote (e) the first stage in the haploid gametophyte generation is the prothallusarrow_forwardDraw a diagram of L.S. of an anatropous ovule of an Angiosperm & label the following parts :- (i) Nucellus (ii) Integument (iii) Antipodal cells (iv) Secondary Nucleus.arrow_forward
- Plants and animals originated in water environments and, much later, plants invaded the land and later still, animals invaded the land. a) With respect to the four groups of plants (Bryophytes, seedless vascular plants, Gymnosperms, and Angiosperms), give the basic method of fertilization. That is, how do the sperm reach the eggs? b) What is the significance of the fertilization methods to the invasion of the land by the Gymnosperms and Angiosperms?arrow_forwardHow does a haplontic plant population maintain genetic diversity? Zygotes are produced by random fusion Gametes are created through meiosis Diploid spores undergo independent assortment during mitosis The zygote undergoes meiosis to generate a haploid sporophyte.arrow_forward12) Why do you say that fertilization in seed plants is independent of water? A) Spermatid cells are not necessary for fertilization to occur in seed plants.B) Seed plants use pollen instead of spermatid cells for fertilization.C) Spermatid cells are carried by pollen grains.D) Which spermatid cells in seed plants are capable of resisting desiccation indefinitely.arrow_forward
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