Advertisements
Advertisements
प्रश्न
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
Advertisements
उत्तर
(c) pollination, fertilisation, embryo, seed
The pollens are transferred to the stigma by pollination, the gametes then fuse and under go fertilisation to form the zygote which develops into an embryo and, then, into a seed.
APPEARS IN
संबंधित प्रश्न
Name the parts labelled as A, B, C and D in the diagram given below:
Sketch the reproductive parts of a flower.
State the name of the functional unit concerned with sexual reproduction.
What is the function of a flower?
Where is the female gamete formed in flowering plants?
Fill in the following blank with suitable word :
The male organ of reproduction in the flower is the.......... .
Draw a neat sketch of the stamen of a flower. Mark in it filament and anther.
Explain the terms 'cross-pollination'?
What type of plants reproduce by sexual reproduction method?
Which among the following statements are true for unisexual flowers?
(i) They possess both stamen and pistil
(ii) They possess either stamen or pistil
(iii) They exhibit cross pollination
(iv) Unisexual flower possessing only stamens cannot produce fruits
(a) (i) and (iv)
(b) (ii), (iii) and (iv)
(c) (ii) and (iii)
(d) (i), (iii) and (iv)
The students of a class were asked by the teacher to study the different parts of an embryo of an angiosperm. Given below are the essential steps for the experiment :
A. Soak the seeds in plain water and keep them overnight.
B. Cut open the soaked seed and observe its different parts.
C. Take some healthy seeds in a petri-dish.
D. Drain the excess water, cover the seeds with a wet cotton cloth and leave them as it is for a day.
The correct sequence of these steps is
(a) C, A, D, B
(b) C, D, A, B
(c) A, C, D, B
(d) A, C, B, D
(a) Identify A, B and C in the given diagram and write their functions.
(b) Mention the role of gamete and zygote in sexually reproducing organisms.
Which of the following is not an unisexual flower?
a) Coconut
b) Papaya
c) Gulmohor
d) Maize
Mention pollination types.
What is meant by pollination?
Bisexual : Hibiscus : : Unisexual : ___________
Identify the female gametophyte in angiosperms.
The flower of the Hibiscus plant is ______
Which out of the following processes does not lead to the formation of clones.
Double fertilization is exhibited by ______
