In some plants, the thalamus contributes to fruit formation. Such fruits are termed as:

1. False fruits

2. Aggregate fruits

3. True fruits

4. Parthenocarpic fruits

Subtopic:  Seed |
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Which of the following is incorrect for wind-pollinated plants?

1. Well exposed stamens and stigma

2. Many ovules in each ovary

3. Flowers are small and not brightly colored

4. Pollen grains are light and non-sticky

Subtopic:  Pollination & Outbreeding Devices |
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Plants with ovaries having only one or a few ovules, are generally pollinated by : 

1.  Butterflies 

2.  Birds 

3. Wind 

4. Bees 

Subtopic:  Pollination & Outbreeding Devices |
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What is the function of germ pore ?
1.  Absorption of water for seed germination
2.  Initiation of pollen tube
3.  Release of male gametes
4.  Emergence of radicle

Subtopic:  Pollen - Pistil Interaction |
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Which one of the following statements is wrong?
1.  Vegetative cell is larger than generative cell
2.  Pollen grains in some plants remain viable for months
3.  Intine is made up of cellulose and pectin
4.  When pollen is shed at two-celled stage, double fertilization does not take place

Subtopic:  Post Pollination Events |
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What is common between vegetative reproduction and Apomixis ?
1. Both produce progeny identical to the parent
2. Both are applicable to only dicot plants
3. Both bypass the flowering phase
4. Both occur round the year

Subtopic:  Apomixis & Polyembryony |
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Anthesis is a phenomenon which refers to -

(1) formation of pollen

(2) Development of anther

(3) Opening of flower bud

(4) Reception of pollen by stigma

Subtopic:  Pollen - Pistil Interaction |
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Eight nucleated embryosac is a :

1. Only monosporic

2. Only bisporic

3. Only tetra sporic

4. Any of the above

Subtopic:  Pistil: Female Gametophyte |
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Endosperm is formed during double fertilization by

1. Two polar nuclei & one male gamete

2. One polar nuclei & one male gamete

3. Ovum and male gamete

4. Two polar nuclei & two male gametes

Subtopic:  Double Fertilization |
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Hair found in the inflorescences of Zea mays is the modification of:

1. Style 2. Stigma
3. Spathe 4. Filaments
Subtopic:  Pollination & Outbreeding Devices |
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