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प्रश्न
Differentiate Between Cross Pollination and Self Pollination:
उत्तर
| Self-pollination | Cross-pollination |
| It occurs between anther and stigma of the same plant. | It occurs between anther and stigma of different plants. |
| External agent is not required. | External agent is required. |
| Anther and carpel mature at the same time. | Anther and carpel mature at different times. |
| This pol Ii nation preserves the parental characters. | This pollination does not preserve the parental characters. |
| Pollen grains are produced in less quantity. | Pollen grains are produced in large Quantity |
APPEARS IN
संबंधित प्रश्न
Geitonogamous flowering plants are genetically autogamous but functionally cross-pollinated. Justify.
Draw a diagram of a section of a megasporangium of an angiosperm and label funiculus, Micropyle, embryosac and nuclleus.
Fill in the blanks:
The two kinds of pollination are __________ and __________.
Name of the part of the ovary which gives rise to:
Fruit ______
Coelacanth was caught in South Africa. State the significance of the discovery of Coelacanth in the evolutionary history of vertebrates.
What is a flower? Draw a typical flower and label its different parts.
Pollination by water occurs in ______.
Male and female flowers are present on different plants (dioecious) to ensure xenogamy, in ______.
Insect pollinated flowers are ______.
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 | ______ |
