Q. No.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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Identify the incorrect statement regarding Parthenium hysterophorus:
| 1. | Its pollens are a very common cause of severe respiratory allergies. |
| 2. | It was introduced in India accidentally as a contaminant in wheat. |
| 3. | It is a native of tropical America |
| 4. | It is non-invasive and limited to certain pockets in India only |
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Match the structure in Column I with the description in Column II and choose your answer from the codes given below:
| Column I | Column II | ||
| A. | Stigma | a. | Landing platform for pollen grains |
| B. | Ovary | b. | Basal bulged part of the pistil |
| C. | Placenta | c. | Part of the ovary where funiculus attaches |
| D. | Ovule | d. | Megasporangium |
Codes
| A | B | C | D | |
| 1. | a | b | c | d |
| 2. | a | c | b | d |
| 3. | b | a | d | c |
| 4. | d | c | b | a |
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