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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Aleurone layer of Maize grain is specially rich in
1. | Proteins | 2. | Starch |
3. | Lipids | 4. | Auxins |
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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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