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प्रश्न
Explain the terms 'cross-pollination'?
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उत्तर
In cross pollination, pollens from the anther of one flower are transferred to the stigma of the another flower of another plant but of the same species.
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संबंधित प्रश्न
What is the function of a flower?
Which among the following statements are true for unisexual flowers?
(i) They possess both stamen and pistil
(ii) They possess either stamen or pistil
(iii) They exhibit cross pollination
(iv) Unisexual flower possessing only stamens cannot produce fruits
(a) (i) and (iv)
(b) (ii), (iii) and (iv)
(c) (ii) and (iii)
(d) (i), (iii) and (iv)
In what ways is fertilisation in a plant different from fertilisation in a human?
Mention the function of Stigma.
List any two differences between pollination and fertilization.
Sketch the labelled diagram.
Flower with its sexual reproductive organs.
Fill in the blank by selecting suitable word:
Transfer of pollen grains from the anther to the stigma is known as______________.
Calyx : Sepals : : Corolla : ________________
The essential parts of a flower are ______.
The anther wall consists of four wall layers where ______
Which of the following are the chemical components of the wall of pollen tube?
Which type of development is observed in male gametophytes of plants?
Flowers showing ornithophily show few characteristic like ______.
The process of release of eggs from the ovary is called ______
Is the chromosome number of zygote, embryonal cells and adult of a particular organism always constant? How is the constancy maintained in these three stages?
What is the structural unit of sexual reproduction in plant?
What are the agents for pollination?
Consider the following three flowers namely X, Y and Z. Which flower(s) would develop into a fruit?
| Flower X | Flower Y | Flower Z |
 |
 |
 |
Given below is a diagram of a germinating seed. Label the parts that:
- gives rise to future shoot.
- gives rise to future root system.
- stores food.
State the post-fertilisation changes that lead to fruit formation in plants.
