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II. Altemate response C. If statement A is correct and B is wrong. D. If statement A is wrong and B is correct. A. f both statements are correct. B. If both statements are wrong. 25. A. The microsporangium in the anther contains numerous microsporocytes which will undergo meiosis to produce four haploid microspores. B. Each microspore develops into a pollen grain containing two sperm nuclei and one tube nucleus.

II. Altemate response C. If statement A is correct and B is wrong. D. If statement A is wrong and B is correct. A. f both statements are correct. B. If both statements are wrong. 25. A. The microsporangium in the anther contains numerous microsporocytes which will undergo meiosis to produce four haploid microspores. B. Each microspore develops into a pollen grain containing two sperm nuclei and one tube nucleus.

Human Anatomy & Physiology (11th Edition)
Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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II. Altemate response C. If statement A is correct and B is wrong. D. If statement A is wrong and B is correct. A. f both statements are correct. B. If both statements are wrong. 25. A. The microsporangium in the anther contains numerous microsporocytes which will undergo meiosis to produce four haploid microspores. B. Each microspore develops into a pollen grain containing two sperm nuclei and one tube nucleus. 26. A. The megasporocyte will undergo meiosis to produce four haploid megaspores three megaspores degenerate. B. One remaining megaspore divides mitotically three times. 27. A. An embryo sac (ovule) contains eight haploid nuclei. B. Three nuclei become three synergids, 2 polar nuclei, 3 antipodal nuclei. 28. 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. 29. A. One sperm unites with the egg to form the zygote. B. The other sperm fuses with the polar nuclei to become the endosperm, which serves as food of the early embryo. 30. A. Embryogenesis follows while the ovary matures into fruit. B. The ovule becomes the seed.
Transcribed Image Text:II. Altemate response C. If statement A is correct and B is wrong. D. If statement A is wrong and B is correct. A. f both statements are correct. B. If both statements are wrong. 25. A. The microsporangium in the anther contains numerous microsporocytes which will undergo meiosis to produce four haploid microspores. B. Each microspore develops into a pollen grain containing two sperm nuclei and one tube nucleus. 26. A. The megasporocyte will undergo meiosis to produce four haploid megaspores three megaspores degenerate. B. One remaining megaspore divides mitotically three times. 27. A. An embryo sac (ovule) contains eight haploid nuclei. B. Three nuclei become three synergids, 2 polar nuclei, 3 antipodal nuclei. 28. 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. 29. A. One sperm unites with the egg to form the zygote. B. The other sperm fuses with the polar nuclei to become the endosperm, which serves as food of the early embryo. 30. A. Embryogenesis follows while the ovary matures into fruit. B. The ovule becomes the seed.
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