কাজ
বিরক্তি, মানসিক চাপ, নার্ভাসনেস, ঘুমের ব্যাঘাত এবং ব্যাঘাত, তীব্র উদ্বেগ চিকিৎসায় নির্দেশিত হয়।
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Is their any role of calyx and corolla in a flower?
(i) Role of calyx: Calyx covers and protects all other parts of flower within a bud. (ii) Role of corolla: Corolla is also a protective floral member. It protects androecium and...
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A member of the lily family, it is the national flower of India?
Lotus is a member of a lily family , and our national flower also.
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In a flower, the parts that produce male and female gametes (germ cells) are
(c) anther and ovary
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Which of the following is the correct sequence of events of sexual reproduction in a flower?
(c) pollination, fertilisation, embryo, seedling
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In a bisexual flower of the young stamens being removed, the flower produces fruit. Provide a suitable explanation .
The pistil is intact. Cross pollination has occurred leading to fertilisation and formation of fruit.
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Distinguish between pollination and fertilisation. Mention the site and product of fertilisation in a flower. Draw a neat,
The process or mechanism of transfer of pollen grains from the anther to the stigma is termed pollination. The fusion of male and female gaemtes giving rise to zygote is termed fertilisation The site...
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Two pink coloured flowers on crossing resulted in 1 red, 2 pink and 1 white flower progeny. The nature of the cross will be
(b) self pollination
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What is a flower? Describe the parts of a typical angiosperm flower?
A flower can be defined as the reproductive unit of any flowering plant (angiosperms). Flowers carry out sexual reproduction in angiosperms. A typical flower is a modified stem with a...
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‘Both a short day plant and a long day plant can flower simultaneously in a given place’. Explain.
The flowering response in short-day plants and long-day plants is dependent on the durations for which these plants are exposed to light. The short-day plant and long day plant can...
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In monohybrid cross of red and white flower, Mendel got only red flower. On setting the F1 plants having red flower
On crossing red and white flower only red colour flower appeared in the F1 generation. But the white colour flower again appear in the F2 generation which is raised out...
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