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Question
What are the different adaptations shown by bird-pollinated flowers?
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Solution
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.
RELATED QUESTIONS
A flower of tomato plant following the process of sexual reproduction produces 200 viable seeds.
Answer the following questions giving reasons :
(a) What would have been the minimum number of ovules present in pre-pollinated pistil ?
(b) How many microscope mother cells would minimally be required to produce requisite number of pollen grains ?
(c) How many pollen grains must have minimally pollinated the carple ?
(d) How many male gametes would have used to produce these 200 viable seeds ?
(e) How many megaspore mother cells were required in this process ?
Why does self-pollination not lead to seed formation in self-incompatible species?
Fill in the blank:
Male sex cells in plants are called _________.
Fill in the blanks with suitable words.
_______ is a water-pollinated flower.
Answer the following question.
Write the difference in the characteristics of the progeny produced as a result of the two processes.
Describe pollination. How many types of pollinations are found?
What are the adaptations which are required in self-pollinated plants?
The question has four options. Choose the correct answer:
Pollination by insect is known as
For which of the following attractants and rewards are required?
When and why does a plant breeder employ the emasculation technique?
