- 1(current)
Q. No.Endosperm, a product of double fertilization in angiosperms is absent in the seeds of
| 1. | Gram | 2. | Orchids |
| 3. | Maize | 4. | Castor |
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What is true regarding aleurone layer in a monocot seed?
I. It is composed of proteinaceous material.
II. It is the outermost cell layer of the endosperm.
| 1. | Only I | 2. | Only II |
| 3. | Both I and II | 4. | Neither I nor II |
| Column 1 | Column 2 | ||
| A | Outer layer of the seed coat | P | Coleoptile |
| B | Inner layer of the seed coat | Q | Tegmen |
| C | Sheath enclosing the plumule | R | Coleorhiza |
| D | Sheath enclosing the radicle | S | Testa |
| A | B | C | D | |
| 1. | Q | S | P | R |
| 2. | S | Q | P | R |
| 3. | S | Q | R | P |
| 4. | Q | S | R | P |
The mature seed of plants such as gram and peas, possess 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
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Match the followings and choose the correct option :
| Group A | Group B | ||
| A. | Aleurone layer | i. | without fertilization |
| B. | Parthenocarpic fruit | ii. | Nutrition |
| C. | Ovule | iii. | Double fertilization |
| D. | Endosperm | iv. | Seed |
Options:
| A | B | C | D | |
| 1. | i | ii | iii | iv |
| 2. | ii | i | iv | iii |
| 3. | iv | ii | i | iii |
| 4. | ii | iv | i | iii |
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- 1(current)
Q. No.
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