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प्रश्न
Identify the odd. Stigma, Style, Pollen, Ovary.
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उत्तर
Pollen (Remaining are parts of gynaecium)
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संबंधित प्रश्न
A student was asked to observe and identify the various parts of an embryo of a red kidney bean seed. He identified the parts and listed them as under:
I. Tegmen
II. Testa
III. Cotyledon
IV. Radicle
V. Plumule
The correctly identified parts among these are
(A) I, II and III
(B) II, III and IV
(C) III, IV and V
(D) I, III, IV and V
The process of fusion of the male and female gametes is called ______.
Name the swollen lower part of the carpel.
What is the function of a flower?
What are the reproductive organs in a flower?
What is the name of female organ of a flower (other than carpel)?
Draw a neat sketch of the carpel of a flower. Mark in it stigma, style and ovary.
Explain the terms 'self pollination'
What is seed?
In tobacco plant, the male gametes have 24 chromosomes.
What is the number of chromosomes in the female gamete?
What is meant by ‘unisexual flowers’?
How does pollination occur?
What changes take place in the flower after fertilisation which lead to the formation of seeds and fruit?
Draw a neat diagram of a flower showing its various parts. In this diagram mark stem, receptacle, sepals, petals, stamen and carpel.
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 flask-shaped organ A at the centre of a flower is surrounded by a number of little stalks B having swollen tops which lie just inside the ring of petals.
(a) Name A. What are the various parts of A?
(b) Which part of A contains gametes?
(c) Name B. What is the swollen top of B known as?
(d) What does the swollen top of b contain?
(e) Out of A and B, which one is (i) male part, and (ii) female part of the flower?
In a bisexual flower, inspite of the young stamens being removed artificially, the flower produces fruit. Explain.
Fill in the blank by selecting suitable word:
A flower bearing only male or female parts is known as __________ flower.
What is a flower ? Draw a neat labelled diagram showing the L.S. of a typical flower.
Fill in the blanks:
A carpel consists of ________ , ________ and ________.
Find the odd-one out, giving reason:
Anther, pollen grain, ovule male gamete
Draw a labelled diagram of a bisexual flower.
Write one main difference between asexual and sexual mode of reproduction. Which species is likely to have comparatively better chances of survival – the one reproducing asexually or the one reproducing sexually? Give reason to justify your answer.
Fill in the blank by selecting suitable word:
Transfer of pollen grains from the anther to the stigma is known as______________.
Find an odd one out.
Define.
Inflorescence
Write the functions of sepals
Give scientific reason.
Fertilization in plants is called double fertilization.
Explain the sexual reproduction process in plants with a diagram.
Write the events involved in the sexual reproduction of a flowering plant.
Discuss the first event and write the types.
The ovule of an angiosperm is technically equivalent to ______
Identify the female gametophyte in angiosperms.
In a flowering plant, archesporium gives rise to ______.
Conidia are formed endogenously while zoospores are formed endogenously.
The flower of the Hibiscus plant is ______
Length of pollen tube depends on the distance between ______
The ovaries of different flowers may contain ______.
What are the agents for pollination?
Triple fusion involves ______.
Name the reproductive parts of an angiosperm. Where are these parts located? Explain the structure of its male reproductive part.
