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Q. No.Match each item in Column I regarding structure of a dicotyledonous seed with description in Column II and select the correct option from the codes given below:
|
|
COLUMN I |
|
COLUMN II |
|
A |
Testa |
a |
Outer layer of seed coat |
|
B |
Tegmen |
b |
Inner layer of seed coat |
|
C |
Hilum |
c |
Scar on seed coat through which the developing seeds were attached to the fruit |
|
D |
Micropyle |
d |
Small pore through which pollen tube penetrates |
Codes
| A | B | C | D | |
| 1. | a | b | c | d |
| 2. | b | a | c | d |
| 3. | b | a | d | c |
| 4. | a | b | d | c |
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Seed coat is membranous and generally fused with the fruit wall in:
| 1. | Apple | 2. | Maize |
| 3. | Coconut | 4. | Castor |
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Generally, monocotyledonous seeds are endospermic. An important exception may be:
| 1. | Rice | 2. | Wheat |
| 3. | Orchids | 4. | Pea |
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Scutellum is:
| 1. | shield shaped cotyledon in monocotyledons |
| 2. | protein layer in the outer endosperm in monocotyledons |
| 3. | starchy endosperm of dicotyledons |
| 4. | stony hard seed coat in some seeds |
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The sheath covering the plumule in monocotyledonous seeds is called as:
| 1. | Coleorrhiza | 2. | Coleoptile |
| 3. | Testa | 4. | Tegmen |
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In the given diagram of structure of a monocotyledonous seed,
1. A represents the fused testa and tegmen
2. B secretes enzymes for hydrolysis of stored nutrients
3. C is the single cotyledon seen in the seed
4. D is the covering of the embryonic root
Statement I: A proteinaceous material, usually in the form of small granules, occurring in the outermost cell layer of the endosperm of wheat and other grains are called as aleurone layer.
Statement II: The radical in a monocot seed is enclosed in a sheath called as coleoptiles.
1. Statement I is correct and statement II is incorrect
2. Statement I is incorrect and statement II is correct
3. Statement I and statement II are incorrect
4. Statement I and statement II are correct
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The term ‘peripheral endosperm’ in monocotyledonous seeds normally refers to:
| 1. | Epicarp | 2. | Pericarp |
| 3. | Aleurone layer | 4. | Starchy endosperm |
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Q. No.
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