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Two rigid pointed hook-like structures are present in

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Important Questions on Sexual Reproduction in Flowering Plants

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NTA Errorless Biology Volume-2>Chapter 2 - Sexual Reproduction in Flowering Plants>Self Evaluation Test>Q 3

Most resistant biological material is  

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An organic substance that can withstand environmental extremes and cannot be degraded by any enzyme is

Or

Which of the following plant product is the hardest

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NTA Errorless Biology Volume-2>Chapter 2 - Sexual Reproduction in Flowering Plants>Self Evaluation Test>Q 4
Environmental biotic factor that helps in pollination is
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NTA Errorless Biology Volume-2>Chapter 2 - Sexual Reproduction in Flowering Plants>Self Evaluation Test>Q 5
If the position of the ovary is below sepals, petals and stamens, the flower is called?
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NTA Errorless Biology Volume-2>Chapter 2 - Sexual Reproduction in Flowering Plants>Self Evaluation Test>Q 6
Arrangement of ovules on the placentae developed from central axis of ovary is
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NTA Errorless Biology Volume-2>Chapter 2 - Sexual Reproduction in Flowering Plants>Self Evaluation Test>Q 7
Who is author of book "Introduction to the Embryology" of Angiosperms
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NTA Errorless Biology Volume-2>Chapter 2 - Sexual Reproduction in Flowering Plants>Self Evaluation Test>Q 8
Which of these is not essential for allogamy
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NTA Errorless Biology Volume-2>Chapter 2 - Sexual Reproduction in Flowering Plants>Self Evaluation Test>Q 9
Siphonogamy in angiosperm means
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NTA Errorless Biology Volume-2>Chapter 2 - Sexual Reproduction in Flowering Plants>Self Evaluation Test>Q 10
Plasmogamy refers to