Advertisements
Advertisements
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?
Advertisements
उत्तर
(i) Part ‘A’ labelled is pollen grain.
(ii) Part ‘B’ is stigma. The pollen grain reaches the stigma during pollination.
(iii) Part ‘C’ is the pollen tube. The pollen tube carries the gametes to the embryo sac for fertilisation.
(iv) Part ‘D’ is the egg cell. After fertilisation with the male gametes, the egg cell forms the zygote.
APPEARS IN
संबंधित प्रश्न
A student while observing an embryo of a pea seed in the laboratory listed various parts of the embryo as given below:
Testa, Tegmen, Radicle, Plumule, Micropyle, Cotyledon.
On examining the list the teacher remarked that only three parts are correct. Select three correct parts from the above list:
(a) Testa, Radicle, Cotyleddon
(b) Tegmen, Radicle, Micropyle
(c) Cotyledon, Plumule, Testa
(d) Radicle, Cotyledon, Plumule
Mention the changes a flower undergoes after fertilisation.
Name the swollen lower part of the carpel.
Fill in the following blank with suitable word :
Ovules contain ......... gametes of a plant.
In the figure given alongside, the parts marked A, B and C are sequentially :
(a) cotyledon, plumule and radicle
(b) plumule, radicle and cotyledon
(c) plumule, cotyledon and radicle
(d) radicle, cotyledon and plumule
What is a flower ? Draw a neat labelled diagram showing the L.S. of a typical flower.
A student is observing the temporary mount of a leaf peel under a microscope. Draw a labelled diagram of the structure of stomata as seen under the microscope
Which out of the following processes does not lead to the formation of clones.
Where is the zygote located in the flower after fertilization?
Trace the path a male gamete takes to fertilise a female gamete after being released from the penis.
