25.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.A. If both statements are wrong.B. If statement A is wrong and B is correct.C. If both statements are correct.O D. If statement A is correct and B is wrong. 30.A. The megasporocyte will undergo meiosis to produce four haploid megaspores three megaspores degenerate.B. One remaining megaspore divides mitotically three times.O A. If both statements are correct.B. If both statements are wrong.C. If statement A is wrong and B is correct.D. If statement A is correct and B is wrong.

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5.A. One sperm unites with the egg to form the zygote. The other sperm fuses with the polar nuclei to become the endosperm, which serves as food of the early embryo. A. If both statements are wrong. B. If statement A is wrong and B is correct. C. If both statements are correct. D. If statement A is correct and B is wrong.

5.A. One sperm unites with the egg to form the zygote. The other sperm fuses with the polar nuclei to become the endosperm, which serves as food of the early embryo. A. If both statements are wrong. B. If statement A is wrong and B is correct. C. If both statements are correct. D. If statement A is correct and B is wrong.

Concepts of Biology

1st Edition

ISBN:9781938168116

Author:Samantha Fowler, Rebecca Roush, James Wise

Publisher:Samantha Fowler, Rebecca Roush, James Wise

Chapter14: Diversity Of Plants

Section: Chapter Questions

Problem 1ACQ: Figure 14.19 At what stage does the diploid zygote form? a. When the female cone begins to bud from...

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2. 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. A.If statement A is correct and B is wrong. B.If both statements are correct. C.If statement A is wrong and B is correct. D.If both statements are 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.
I. The joining of male and female reproductive cells is called?? II. It is the make reproductive part of the flower III. If stigma recieves pollen from another flower of the same species what the flower is ???
The stamen consists of a long stalk called the filament that supports the. stigma sepal style anther
_______ is the arrival of pollen on a receptive stigma.
The nutritive tissue in the seeds of flowering plants that is formed from the union of a sperm cell and two polar nuclei is called the (a) plumule (b) endosperm (c) cotyledon (d) hypocotyl (e) radical
Figure 14.19 At what stage does the diploid zygote form? a. When the female cone begins to bud from the tree b. When the sperm nucleus and the egg nucleus fuse c. When the seeds drop from the tree d. When the pollen tube begins to grow
1. THE MALE GAMETES ARE PRODUCED IN THE?? A. TUBULES B. TESTES C. EPITHELIAL D. PENIS 2. PLANT WAS DIVIDED INTO TWO MAIN GROUP, THE FLOWERING PLANTS OR ANGIOSPERMS AND NON FLOWERING PLANTS CALLED??? A. ANGUSPERMS B. CONIFERS C. GYMNOSPERMS D. XEROPHYTES 3. PLANTS THAT DO NOT PRODUCE SEEDS CAN BE CLASSIFIED IN TWO GROUPS A. FERNS AND CONIFERS B. FERNS AND GRASSES C. FENS AND OAK TREES D. FERNS AND MOSSES
A seed protects thea. embryo. b. ovule. c. ovary.d. pollen grain.
The fertilized ovule gives rise to the ________. a. fruit b. seed c. endosperm d. embryo
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.
A fruit is(A) a mature ovary.(B) a mature ovule.(C) a seed plus its integuments.(D) an enlarged embryo sac.