Advertisements
Advertisements
प्रश्न
What are the different adaptations shown by bird-pollinated flowers?
Advertisements
उत्तर
Ornithophilous plants shows the following adaptations:
- Flowers are usually brightly coloured, large, and showy.
- They secrete profuse, dilute nectar.
- Pollen grains are sticky and spiny.
- Flowers are generally without fragrance, as birds have a poor sense of smell.
संबंधित प्रश्न
Explain the post-pollination events leading to seed production in angiosperms.
Draw a diagram of a section of a megasporangium of an angiosperm and label funiculus, Micropyle, embryosac and nuclleus.
What is a flower? Draw a typical flower and label its different parts.
For which of the following attractants and rewards are required?
From among the situations given below, choose the one that prevents both autogamy and geitonogamy.
Chief pollinators of agricultural crops are ______.
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 |
What is epihydrophily?
When and why does a plant breeder employ the emasculation technique?
Which one of the following flower is hypohydrophilous?
