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प्रश्न
Sketch and label the essential and accessory whorls of flower.
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उत्तर
संबंधित प्रश्न
Name the parts labelled as A, B, C and D in the diagram given below:-
(i) Name the part marked 'A' in the diagram.
(ii) How dose 'A' reachese part 'B'?
(iii) State the importance of the part 'C'.
(iv) What happens to the part marked 'D' after fertilisation is over?
State significance of pollination.
State the function of flowers in the flowering plants.
The fusion of male and female gametes is termed as ______.
Name the part made up of the stigma, style and ovary.
Name the male part of the flower.
Where is the male gamete formed in flowering plants?
Fill in the following blank with suitable word :
Ovules contain ......... gametes of a plant.
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 tobacco plant, the male gametes have 24 chromosomes.
What is the number of chromosomes in the zygote?
Which of the following is the correct sequence of events of sexual reproduction in a flower?
(a) pollination, fertilisation, seed, embryo
(b) seed, embryo, fertilisation, pollination
(c) pollination, fertilisation, embryo, seed
(d) embryo, seed, pollination, fertilisation
One of the following occurs in the reproductive system of flowering plants as well as that of humans. This is :
(a) vas deferens
(b) anther
(c) ovary
(d) style
In the figure given alongside, the parts marked A, B and C are sequentially:
The correct sequence of reproductive stages occurring in flowering plants is ______.
Fill in the blank by selecting suitable word:
A flower that bears both the male and the female parts is known as __________ flower.
Draw a diagram of a pistil showing pollen tube growth into the ovule and label the following:
Pollen grain, male gamete, female gamete, ovary.
Sketch the labelled diagram.
Flower with its sexual reproductive organs.
Mention pollination types.
Answer the following question.
How does suitable pollination lead to fertilization?
Pollen grains are formed by _________ division in locules of anthers.
__________ is present in unisexual flower.
Accessory whorls : Calyx and corolla : : essential whorls : ______________
Draw a neat and labelled diagram.
Double fertilization in angiosperms
Write the events involved in the sexual reproduction of a flowering plant.
Discuss the first event and write the types.
What would be the number of chromosomes of the aleurone cells of a plant with 42 chromosomes in its roots tip cells?
Gloriosa superba exhibits ______.
Sperm and egg nuclei fuse due to ______.
Which out of the following processes does not lead to the formation of clones.
Complete the table
| Carly x | ______ | ______ |
| ______ | petal | attract insects |
| Androecium | ______ | Male reproductive part |
| ______ | ______ | Female reproductive part. |
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?
Where is the zygote located in the flower after fertilization?
What is the structural unit of sexual reproduction in plant?
Sexual maturation of reproductive tissues and organs are necessary link for reproduction. Elucidate.
Type of sexual reproduction is ______.
The pollen tube usually enters the embryo sac ______.
Explain the post fertilization changes that occur in the ovary of a flower.
In male reproductive whorl of a flower the archesporial cells are formed by ______.
