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प्रश्न
Identify each part in a flowering plant and write whether it is haploid (n) or diploid (2n).
Ovary ———————————
Anther ———————————
Egg ———————————
Pollen ———————————
Male gamete ———————————
Zygote ———————————
उत्तर
Ovary Diploid (2n)
Anther Diploid (2n)
Egg Haploid (n)
Pollen Haploid (n)
Male gamete Haploid (n)
Zygote Diploid (2n)
APPEARS IN
संबंधित प्रश्न
Explain the importance of syngamy and meiosis in a sexual life cycle of an organism.
What is a bisexual flower?
Collect five bisexual flowers from your neighborhood and with the help of your teacher find out their common and scientific names.
Mention the ploidy of the different types of cells present in the female gametophyte of an angiosperm.
The following question(s)/statement(s) has four suggested answers. Choose the correct option in the following case.
After fertilisation, the integuments of an ovule develop into : __________.
In animals, juvenile phase is followed by ______.
Choose the correct statements.
Given below are a few statements related to external fertilization.
- The male and female gametes are formed and released simultaneously
- Only a few gametes are released into the medium
- Water is the medium in a majority of organisms exhibiting external fertilization
- Offspring formed as a result of external fertilization have better chance of survival than those formed inside an organism
In flowering plants both male and female gametes are non-motile. The method to bring them together for fertilization is ______.
Which of the following statements is true of date palm?
Which plant will lose its economic value if its fruits are produced by induced parthenocarpy?
Why is vivipary an undesirable character for annual crop plants?
In meiosis, division is ______.
What is true for cleavage?
What is true about the change in fertilized eggs of humans?
Pre-fertilization events include the following?
- Gametogenesis
- Zygotic embryogenesis
- Gamete transfer
- Homogametic union
- Heterogametic union
The correct combination is ______
Gamete transfer occurs through water in all of the following except:
Rearrange the following events of sexual reproduction in the sequence they occur in a flowering plant:
Embryogenesis, Fertilisation, Gametogenesis, Pollination.
Is the presence of large number of chromosomes in an organism a hindrance to sexual reproduction? Justify your answer by giving suitable reasons.
Which of the followings are monoecious and dioecious organisms?
| a. | Earthworm | ______ |
| b. | Chara | ______ |
| c. | Marchantia | ______ |
| d. | Cockroach | ______ |
| Fertilisation is the key process in sexually reproducing organisms and it acts as a vital link between two generations. Flowering plants adopt a unique pattern of sexual reproduction as compared to other organisms. |
- Explain the process of fertilisation in angiosperms.
- What is the precise location and function of filiform apparatus in the embryo sac of angiosperms?
- Fruits and seeds are generally formed due to fertilisation. Name the process involved in the production of the following without fertilisation:
- Fruits
- Seeds
