Q. No.Match each item in Column I with one in Column II and select the correct answer from the codes given:
A.
Pollen exine
P.
Cellulose and pectin
B.
Pollen intine
Q.
Sporopollenin
C.
Antipodals
R.
Nutrition to the embryo sac
D.
Synergids
S.
Pollen tube guidance
A.
B.
C.
D.
1.
P
Q
R
S
2.
Q
P
S
R
3.
Q
P
R
S
4.
P
Q
S
R
A.
Pollen exine
P.
Cellulose and pectin
B.
Pollen intine
Q.
Sporopollenin
C.
Antipodals
R.
Nutrition to the embryo sac
D.
Synergids
S.
Pollen tube guidance
A.
B.
C.
D.
1.
P
Q
R
S
2.
Q
P
S
R
3.
Q
P
R
S
4.
P
Q
S
R
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The following diagram shows:
| 1. | Multicarpellary, syncarpus pistil of Papaver |
| 2. | Multicarpellary, apocarpus pistil of Papaver |
| 3. | Multicarpellary, apocarpous gynoecium of Michelia |
| 4. | Multicarpellary, syncarpous gynoecium of Michelia |
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Consider the following statements:
| I: | A monoecious plant bears either male or female flowers. |
| II: | In monoecious plants, autogamy may be prevented but not geitonogamy. |
| III: | Cucurbits and coconuts are monoecious plants. |
| 1. | I and II only | 2. | I and III only |
| 3. | II and III only | 4. | I, II, and III |
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Identify the incorrect statement regarding angiosperm:
| 1. | A typical anther is bilobed and dithecous |
| 2. | Cells of tapetum are nourishing to developing pollen grains |
| 3. | In over 60% of angiosperms pollen grains are shed at the 3-celled stage |
| 4. | It is possible to store many pollen grains by cryopreservation |
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All the following can be considered as equivalent terms except:
|
1. |
Megasporangium |
Ovule |
|
2. |
Megasporophyll |
Stamen |
|
3. |
Female gametophyte |
Embryo sac |
|
4. |
Microspore |
Pollen grain |
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Scientists around the world are trying to transfer apomictic genes into hybrid varieties primarily because:
| 1. | cultivation of hybrids has tremendously increased productivity in many important crops. |
| 2. | hybrids are seedless varieties and therefore propagation becomes very difficult. |
| 3. | if seeds from the hybrids are sown, segregation leads to the loss of hybrid characters. |
| 4. | apomixis eliminates the use of seeds in the propagation of plants. |
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Pollen tube, after reaching the ovary, enters the ovule through _______ and then enters one of the _____________ through filiform apparatus.
| 1. | Chalaza; Synergids | 2. | Micropyle; Antipodals |
| 3. | Micropyle; Synergids | 4. | Chalaza; Antipodals |
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Division of functional megaspore can be described as:
| 1. | Three free nuclear mitotic divisions. |
| 2. | One meiotic and two mitotic divisions, all free nuclear. |
| 3. | Three cytoplasmic mitotic divisions. |
| 4. | One meiotic and two mitotic divisions, meiotic being cytoplasmic and mitotic being free nuclear. |
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