BIOLOGY:THE ESSENTIALS (LL) W/CONNECT
3rd Edition
ISBN: 9781260670929
Author: Hoefnagels
Publisher: MCG CUSTOM
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Textbook Question
Chapter 22, Problem 1MCQ
The new gene combinations associated with sexual reproduction in plants are the result of
| a. | mitosis. |
| b. | cloning. |
| c. | meiosis. |
| d. | Both b and c are correct. |
Expert Solution & Answer
Summary Introduction
Introduction:
Sexual reproduction involves formation of new individuals when genetic information from two different sexes combines to produce a genetically different offspring. As, a result the resulting offspring is genetically variable from both the parents.
Answer to Problem 1MCQ
Correct answer:
The new combinations associated with sexual reproduction in plants are the result of meiosis. Hence, the correct answer is options c.
Explanation of Solution
Reason for correct answer:
Option c. is given as, “meiosis.”
Sexual reproduction involves mixing of the genes of both the parents and this is made possible by the process of meiosis, which causes the rearrangement of genes and reduces the number of chromosomes, which is then restored to a complete diploid number after fertilization. Hence, option c. is correct.
Hence, the option d. is correct
Reason for incorrect answers:
Option a. is given as, “mitosis.”
Mitosis is a form of cell division which produces genetically identical clones as parent in the process of asexual reproduction. Hence, option a. is incorrect.
Option b. is given as, “cloning.”
Cloning is making identical copies. It does not involve mixing of genetic information required for sexual reproduction. Hence, option b. is incorrect.
Option d. is given as, “both b and c are correct.”
New gene combinations are not made through cloning; it is only made through meiosis. Hence, option c. is incorrect.
Hence, the options a., b., and d. are incorrect.
Conclusion
Meiosis causes formation of new gene combinations that is associated with sexual reproduction in plants. Thus, the correct option is c.
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Students have asked these similar questions
The products of budding are
a. two cells of equal size.
b. two cells, one of which is smaller than the other.
c. many cells of equal size.
d. many cells of variable size.
Which 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 plants
1.Embryogenesis follows while the ovary matures into fruit.B. The ovule becomes the seed.
A.If both statements are correct.
B.If statement A is wrong and B is correct.
C.If statement A is correct and B is wrong.
D.If both statements are wrong.
2. A. An embryo sac (ovule) contains eight haploid nuclei.B. Three nuclei become three synergids, 2 polar nuclei, 3 antipodal nuclei.
A.If statement A is wrong and B is correct.
B.If both statements are wrong.
C.If both statements are correct.
D.If statement A is correct and B is wrong.
3. A. Inside a pollen grain there is a tube cell and generative cell. B. Generative cell divides to produce two sperm cells while the tube cell becomes pollen tube elongates along the style.
A.If both statements are correct.
B.If statement A is wrong and B is correct.
C.If statement A is correct and B is wrong.
D.If both statements are wrong.
Chapter 22 Solutions
BIOLOGY:THE ESSENTIALS (LL) W/CONNECT
Ch. 22.1 - What adaptations contribute to the reproductive...Ch. 22.1 - Prob. 2MCCh. 22.1 - Prob. 3MCCh. 22.2 - Label as many flower parts as possible in the...Ch. 22.2 - How does pollen move from one flower to another,...Ch. 22.2 - Prob. 3MCCh. 22.2 - Prob. 4MCCh. 22.2 - Prob. 5MCCh. 22.2 - Prob. 6MCCh. 22.2 - Prob. 7MC
Ch. 22.3 - Prob. 1MCCh. 22.3 - Prob. 2MCCh. 22.3 - Prob. 3MCCh. 22.4 - Prob. 1MCCh. 22.4 - Prob. 2MCCh. 22.4 - List the major classes of plant hormones, and name...Ch. 22.4 - Prob. 4MCCh. 22.5 - Prob. 1MCCh. 22.5 - How does light help regulate flowering time?Ch. 22.6 - Prob. 1MCCh. 22.6 - Prob. 2MCCh. 22 - The new gene combinations associated with sexual...Ch. 22 - Prob. 2MCQCh. 22 - Where would you find a male gametophyte? a. Inside...Ch. 22 - Prob. 4MCQCh. 22 - Prob. 5MCQCh. 22 - Prob. 6MCQCh. 22 - Prob. 7MCQCh. 22 - 8. What type of tropism is adaptive to a...Ch. 22 - Prob. 1WIOCh. 22 - Prob. 2WIOCh. 22 - Prob. 3WIOCh. 22 - Prob. 4WIOCh. 22 - Prob. 5WIOCh. 22 - Prob. 6WIOCh. 22 - Prob. 7WIOCh. 22 - Prob. 8WIOCh. 22 - Prob. 9WIOCh. 22 - Prob. 10WIOCh. 22 - Prob. 11WIOCh. 22 - What is the function of photoreceptors?Ch. 22 - Prob. 13WIOCh. 22 - Prob. 14WIOCh. 22 - Prob. 15WIOCh. 22 - Prob. 16WIOCh. 22 - Prob. 1SLCh. 22 - Prob. 1PITCh. 22 - Prob. 2PITCh. 22 - Prob. 3PITCh. 22 - Prob. 4PIT
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