Q. No.What is true about the vegetative cell in the pollen tube?
1.
It is smaller than the generative cell
2.
It has an irregular shaped nucleus
3.
It floats in the cytoplasm of the generative cell
4.
It has a dense cytoplasm lacking food reserves
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In a multicarpellary syncarpous ovary:
| 1. | There is more than one pistil that is fused with the other |
| 2. | There is more than one pistil that is free from each other |
| 3. | There is one pistil that is fused with the stamen |
| 4. | There is more than one pistil that is fused with the stamen |
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When the embryosac develops from a single functional megaspore [the other three get generate], it is called as:
| 1. | Monosporic | 2. | Bisporic |
| 3. | Trisporic | 4. | Tetrasporic |
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Filiform apparatus is associated with _____ and helps in _____________.
1. Syngergids; Nourishment of egg cells
2. Synergids; Guiding the pollen tube
3. Antipodals; Nourishment of egg cells
4. Antipodals; Guiding the pollen tube
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Geitonogamy is:
| 1. | Functionally cross–pollination but genetically autogamy |
| 2. | Functionally autogamy but genetically cross-pollination |
| 3. | Functionally and genetically autogamy |
| 4. | Functionally and genetically cross-pollination |
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Which of the following is/are a marine plant pollinated by water?
| 1. | Vallisneria | 2. | Hydrilla |
| 3. | Zostera | 4. | Both 1 and 2 |
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Identify the plant pollinated by insects that, in many species, emit a scent of decaying flesh from the inflorescence, in order to attract insects:
| 1. | Yucca | 2. | Amorphophallus |
| 3. | Zostera | 4. | Vallisneria |
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Dioecy in flowering plants prevents:
| 1. | Autogamy but not Geitonogamy |
| 2. | Geitonogamy but not Autogamy |
| 3. | Both Geitonogamy and Autogamy |
| 4. | Neither Geitonogamy nor Autogamy |
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In angiosperms, triple fusion results in the formation of:
| 1. | Zygote | 2. | Endosperm |
| 3. | Nucellus | 4. | PEC |
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The correct sequence of layers in the wall of an anther from outside to inside is:
| 1. | Tapetum – Middle Layers – Endothecium – Epidermis |
| 2. | Epidermis – Endothecium – Tapetum – Middle layers |
| 3. | Epidermis – Endothecium – Middle layers – Tapetum |
| 4. | Tapetum – Endothecium – Middle layers – Epidermis |
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