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Question
Name the parts A, B and C shown in the following diagram and state one function of each.
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Solution
The given diagram represents the reproductive parts of a flower. The labelling is as follows:-
A: Anther: It produces pollen grains which are the male gametes.
B: Style: It connects the stigma and ovary and helps in transfer of pollen to the ovary.
C: Ovary: It contains ovules which are female gametes.
RELATED QUESTIONS
Fill in the following blank with suitable word :
The male organ of reproduction in the flower is the.......... .
What is meant by ‘unisexual flowers’?
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)
Fill in the blank by selecting suitable word:
A flower bearing only male or female parts is known as __________ flower.
Give one example each of unisexual and bisexual flowers. Differentiate between the two types of pollination that occur in flowers. What happens when a pollen lands on a suitable stigma? Write about the events that occur till the seed formation in the ovary.
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
In the figure, the parts marked A, B and C are sequentially:
(A) Plumule, Radicle and Cotyledon
(B) Radicle, Plumule and Cotyledon
(C) Plumule, Cotyledon and Radicle
(D) Radicle, Cotyledon and Plumule
Accessory whorls : Calyx and corolla : : essential whorls : ______________
Give reason for the following:
Fertilization cannot take place in flowers if pollination does not occur.
Sketch and label the essential and accessory whorls of flower.
