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प्रश्न
With the help of a suitable example, explain protandry.
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उत्तर
In this type, androecium matures earlier than the gynoecium, e.g., in the disc florets of sunflowers.
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संबंधित प्रश्न
Complete the following chart and rewrite.
| Sr.No. | Agencies | type of pollination |
| 1 | Water | .................... |
| 2 | ........................... | Entomophily |
| 3 | Bat | .................... |
| 4 | ....................... | Ornithophily |
(Or)
Explain outbreeding devices in angiospermic plants.
State four features of flowers pollinated by insects.
Can a plant flowering in Mumbai be pollinated by pollen grains of the same species growing in New Delhi? Provide explanations to your answer.
Which of the following pair has haploid structures?
Both chasmogamous and cleistogamous flowers are present in ______.
The flower which possesses both androecium and gynoecium is called perfect or ______.
A botanist studying Viola (common pansy) noticed that one of the two flower types withered and developed no further due to some unfavorable condition, but the other flower type on the same plant survived and it resulted in an assured seed set. Which of the following will be correct?
Give any four floral adaptations for chiropterophily.
Name the following:
Aquatic plants which are anemophilous.
Complete the following table:
| Sr. | Type of pollination | Agent | Kind of flower | Examples |
| (i) | ______ | Wind | ______ | Maize |
| (ii) | Chiropterophily | ______ | Dull colour, with strong fragrance, abundant nectar | Adansonia |
| (iii) | Entamophily | Insects | ______ | Rose/Jasmine |
| (iv) | Ornithophily | ______ | Brightly coloured, large and showy. They secrete profuse, dilute n ectar | ______ |
