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Question
Compare the characteristic features of insect pollinated and wind pollinated flowers. Explain how the respective features assist in pollination.
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Solution
Characteristic feature of insect pollinated plant :
- Flowers are large, colourful, fragnant and rich in nectar to attract insect. If flowers are small then clustered into inflorescence.
- Pollengrains produced are sticky so that it easily sticks to insect body.
- Stigma is sticky so that pollen grains stuck on insect body transfer to stigma.
Wind Pollinated Flowers:
- Produces light, non-sticky or winged pollengrain so they can be transported in wind currents.
- Anthers are well exposed so that pollens can be easily carried by wind.
- Stigma is large and often feathery to easily trap the airborne pollen grain.
- Flowers are small and inconspicuous and often packed in to an inflorescence.
- Flowers have a single ovule in each ovary.
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RELATED QUESTIONS
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.
Give one word/term for the following:
When stigma and anthers do not grow up to the same height, which favors only cross-pollination.
Anemophily type of pollination is found in ______.
Insect pollinated flowers are ______.
In the dioecious aquatic plant shown, identify the characteristics of the male flowers that reach the female flowers for pollination:
| Size of the flower | Colour of flower | The characteristic feature of pollen grain | |
| A | small | brightly coloured | Lightweight and non-sticky |
| B | large | colourless | large and sticky |
| C | small | white | small, covered with mucilage |
| D | large | colourless | non-sticky |
Choose the correct statement from the following:
Match the Column I with Column II.
| Column I | Column II |
| A. Pea | (i) Xenogamy |
| B. Jawar | (ii) Epihydrophily |
| C. Maize | (iii) Anemophily |
| D. Vallis | (iv) Bisexual |
| E. Cannabis | (v) Geitonogamy |
Mention any one example of the anemophilous flower.
Name the following:
Aquatic plants which are anemophilous.
Identify the set of correct statements:
- The flowers of Vallisneria are colourful and produce nectar.
- The flowers of waterlily are not pollinated by water.
- In most of water-pollinated species, the pollen grains are protected from wetting.
- Pollen grains of some hydrophytes are long and ribbon like.
- In some hydrophytes, the pollen grains are carried passively inside water.
Choose the correct answer from the options given below:
