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प्रश्न
In what ways is fertilisation in a plant different from fertilisation in a human?
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उत्तर
| Fertilisation in plants | Fertilisation in animals |
| External agents are required for pollination. | External agents are not required. |
| The seed is formed after fertilisation. | The human baby is formed after fertilisation. |
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संबंधित प्रश्न
"The chromosomal number of the sexually producing parents and their offspring is the same." Justify this statement.
A flower may have either male or female reproductive parts. Such a flower is called ______.
Mature ovary forms the ______.
Fill in the following blank with suitable word :
The male organ of reproduction in the flower is the.......... .
Fill in the following blank with suitable word :
The name of the structure in the flower in which the male gamete is formed is...........
In the figure given alongside, the parts marked A, B and C are sequentially:
The part of a seed which grows and develops into root on germination is :
(a) cotyledon
(b) plumule
(c) follicle
(d) radicle
Sketch the labelled diagram.
Flower with its sexual reproductive organs.
Fill in the blanks and rewrite the completed statements:
Lymph flows in _______________ direction.
Pollen grains are formed by _________ division in locules of anthers.
Give scientific reason.
Flower is a structural unit of sexual reproduction in plants.
Distinguish between self-pollination and cross-pollination.
In which part of the flower germination of pollen grains takes place?
Identify the female gametophyte in angiosperms.
What would be the number of chromosomes of the aleurone cells of a plant with 42 chromosomes in its roots tip cells?
In a flowering plant, archesporium gives rise to ______.
Length of pollen tube depends on the distance between ______
Complete the table
| Carly x | ______ | ______ |
| ______ | petal | attract insects |
| Androecium | ______ | Male reproductive part |
| ______ | ______ | Female reproductive part. |
Which among the following statements are true for sexual reproduction in flowering plants?
- It requires two types of gametes
- Fertilisation is a compulsory event
- It always results in formation of zygote
- Offspring formed are clones
Double fertilization is essential for formation of ______.
