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कर्नाटक बोर्ड पी.यू.सी.पीयूसी विज्ञान 2nd PUC Class 12

Choose the correct statement from the following: (a) Cleistogamous flowers always exhibit autogamy. (b) Chasmogamous flowers never exhibit autogamy. (c) Chasmogamous flowers always exhibit geitonogamy

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प्रश्न

Choose the correct statement from the following:

विकल्प

  • Cleistogamous flowers always exhibit autogamy.

  • Chasmogamous flowers always exhibit geitonogamy.

  • Cleistogamous flowers exhibit both autogamy and geitonogamy.

  • Chasmogamous flowers never exhibit autogamy.

MCQ
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उत्तर

Cleistogamous flowers always exhibit autogamy.

Explanation:

Cleistogamous flowers never open, so pollen from other plants cannot reach their stigma. This means they are always pollinated by their pollen, ensuring self-pollination (autogamy). This mechanism does not rely on external pollinating agents, making autogamy guaranteed in cleistogamous flowers.

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अध्याय 2: Sexual Reproduction in Flowering Plants - MULTIPLE CHOICE QUESTIONS [पृष्ठ ११]

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एनसीईआरटी एक्झांप्लर Biology Exemplar [English] Class 12
अध्याय 2 Sexual Reproduction in Flowering Plants
MULTIPLE CHOICE QUESTIONS | Q 11. | पृष्ठ ११
नूतन Biology [English] Class 12 ISC
अध्याय 1 Sexual Reproduction in Flowering Plants
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वीडियो ट्यूटोरियलVIEW ALL [2]

संबंधित प्रश्न

As a senior biology student you have been asked to demonstrate to the students of secondary level in your school, the procedure(s) that shall ensure cross-pollination in a hermaphrodite flower. List the different steps that you would suggest and provide reasons for each one of them.


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(b) What would have been the minimum number of ovules present in the ovary?

(c) How many megaspore mother cells were involved?

(d) What is the minimum number of microspore mother cells involved in the above case?

(e) How many male gametes were involved in this case?


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