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प्रश्न
Name the parts labelled as A, B, C and D in the diagram given below:
उत्तर
In the given figure,
A represents the pollen grain
B represents the pollen tube
C represents the ovary
D represents the female germ cell
संबंधित प्रश्न
(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?
The fusion of male and female gametes is termed as ______.
Sketch the reproductive parts of a flower.
The process of fusion of the male and female gametes is called ______.
Fill in the following blank with suitable word :
Ovules contain ......... gametes of a plant.
Name the part of a seed which grows into root.
(a) Draw a neat diagram of a flower showing its various parts. In this diagram mark stem, receptacle, sepals, petals, stamen and carpel.
(b) What name is given to (i) all the petals of a flower, and (ii) all the sepals of a flower?
(c) What are (i) stamen, and (ii) carpel, in a flower?
(d) What is the other name of carpel of a flower?
(e) What is the name of yellow powdery substance present in the anther of a flower?
In which of the following manner the arrangement of megaspores in a tetrad is observed in angiosperms?
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?
The figure below shows the concept of double fertilization. Complete the flow chart showing the progress at each step:
