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Q. No.The cells of the endosperm are filled with reserve food materials and are used for the nutrition of developing embryo is generally a ______ in angiosperms.
1. Triploid tissue
2. Diploid tissue
3. Haploid tissue
4. Hexaploid tissue
1. Triploid tissue
2. Diploid tissue
3. Haploid tissue
4. Hexaploid tissue
Subtopic: Double Fertilization | Endosperm |
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The coconut water from tender coconut represents
1. endocarp
2. fleshy mesocarp
3. free nuclear proembryo
4. free nuclear endosperm
Subtopic: Endosperm |
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After double fertilization, the development of the endosperm precedes the development of the embryo because:
| 1. | The endosperm provides structural support |
| 2. | The endosperm supplies nutrients to the developing embryo |
| 3. | The endosperm aids in seed dispersal |
| 4. | The endosperm protects the embryo from desiccation |
Subtopic: Endosperm |
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The mature seeds of plants such as gram and peas, posses no endosperm, because
1. These plants are not angiosperms
2. There is no double fertilization in them
3. Endosperm is not formed in them
4. Endosperm gets used up by the developing embryo during seed development
Subtopic: Endosperm |
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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
1. plumule
2. endosperm
3. cotyledon
4. hypocotyl
1. plumule
2. endosperm
3. cotyledon
4. hypocotyl
Subtopic: Double Fertilization | Endosperm |
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Match the following examples with their associated processes:
Options:
1. 1-b, 2-c, 3-a, 4-d
2. 1-c, 2-b, 3-d, 4-a
3. 1-a, 2-d, 3-c, 4-b
4. 1-d, 2-a, 3-b, 4-c
| Column-A | Column-B | ||
| 1. | Coconut water | a. | Persistent endosperm in mature seed |
| 2. | Pea and groundnut | b. | Free-nuclear endosperm |
| 3. | Castor seed | c. | Non-albuminous seed |
| 4. | Wheat and maize | d. | Albuminous seed |
1. 1-b, 2-c, 3-a, 4-d
2. 1-c, 2-b, 3-d, 4-a
3. 1-a, 2-d, 3-c, 4-b
4. 1-d, 2-a, 3-b, 4-c
Subtopic: Endosperm |
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Which of the following correctly describes the role of the primary endosperm nucleus (PEN) in flowering plants?
| 1. | It fuses with the zygote to form the embryo. |
| 2. | It provides genetic material for embryo formation. |
| 3. | It gives rise to the triploid endosperm that nourishes the developing embryo. |
| 4. | It protects the embryo from desiccation during seed development. |
Subtopic: Double Fertilization | Endosperm |
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Consider the following statements:
| Statement A: | The primary endosperm nucleus (PEN) is formed by the fusion of one male gamete with two polar nuclei. |
| Statement B: | The endosperm provides nutrition to the developing embryo and in some plants persists in mature seeds. |
| 1. | Statement A is correct but Statement B is incorrect |
| 2. | Both Statement A and Statement B are incorrect |
| 3. | Statement A is incorrect but Statement B is correct |
| 4. | Both Statement A and Statement B are correct |
Subtopic: Double Fertilization | Endosperm |
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