1.
In seeds, characterised by hypogeal germination, cotyledons generally do not becomes green because
A
They lack chloroplast
B
They developed very early
C
Contains inhibitor
D
They remains below the soil
Answer :
They remains below the soil
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2.
Movement of pollen tube is
A
Tactic
B
Tropic
C
Nastic
D
Autonomous
Answer :
Tropic
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3.
At which temperature, germination of seed can not possible in most of the plants
A
10° - 15°C
B
5° - 10°C
C
0° - 5°C
D
20° - 25°C
Answer :
0° - 5°C
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4.
Syngamy means
A
fusion of gametes
B
fusion of cytoplasms
C
fusion of two similar spores
D
fusion of two dissimilar spores
Answer :
fusion of gametes
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5.
Flowers which have single ovule in the ovary and are packed into inflorescence are usually pollinated by:
A
Bee
B
Wind
C
Bat
D
Water
Answer :
Wind
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6.
Mark the correct sequence
A
Anthesis → Meiosis → Pollination → Syngamy
B
Pollination → Meiosis → anthesis → Syngamy
C
Anthesis → Pollination → Meiosis → Syngamy
D
Meiosis → Anthesis → Pollination → Syngamy
Answer :
Anthesis → Meiosis → Pollination → Syngamy
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7.
What is the eyes of Potato
A
Auxillary bud
B
Accessary bud
C
Adventitious bud
D
Apical bud
Answer :
Auxillary bud
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8.
In Angiosperms embryosac is developed from
A
Megaspore mother cell
B
Secondary nucleus
C
Endothecium
D
Microspore mother cell
Answer :
Megaspore mother cell
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9.
The chemical which can break bud dormancy by its spray
A
IAA
B
2, 4 - D
C
Zeatin
D
Thiourea
Answer :
Thiourea
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10.
Male gamete in Angiosperm is produced by
A
Generative cell
B
Microspore cell
C
Vegetative cell
D
Tube cell
Answer :
Generative cell
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