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प्रश्न
Bisexual : Hibiscus : : Unisexual : ___________
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उत्तर
Bisexual : Hibiscus : : Unisexual : Papaya
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संबंधित प्रश्न
Name the parts A, B and C shown in the following diagram and state one function of each.
Name and differentiate between the two modes of pollination in flowering plants.
"The chromosomal number of the sexually producing parents and their offspring is the same." Justify this statement.
You are asked by your teacher to study the different parts of an embryo of a gram seed. Given below are the steps to be followed for the experiment:
I. Soak the gram seeds in plain water and keep them overnight.
II. Cut open a soaked seed and observe its different parts.
III. Take some dry gram seeds in a petri dish.
IV. Drain the excess water.
V. Cover the soaked seeds with a wet cotton cloth and leave them for a day.
The correct sequence of these steps is :
(A) III, I, V, IV, II
(B) III, I, II, IV, V
(C) III, IV, V, I, II
(D) III, I, IV, V, II
Where are the pollen grains produced?
What is the function of a flower?
Where is the male gamete formed in flowering plants?
What is made in anther of a flower?
What is made in ovary of a flower?
Explain the terms 'self pollination'
Explain the terms 'cross-pollination'?
Explain the term 'fertilisation'.
Name the part of a seed which contains stored food.
How does pollination occur?
Mention the function of Flower.
What are the male and female gametes in a flowering plant?
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.
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
Distinguish between unisexual and bisexual flowers giving one example of each. Draw a diagram showing process of germination of pollen grains on stigma and label the following parts:
(a) Female germ cell
(b) Male germ cell
(c) Ovary
Draw a diagram of the longitudinal section of a flower and label the following parts.
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
Answer the following question.
List two agents of pollination?
Distinguish between self-pollination and cross-pollination.
In which part of the flower germination of pollen grains takes place?
Where does the endothecium layer of anther lobes is present?
In which of the following manner the arrangement of megaspores in a tetrad is observed in angiosperms?
Identify the female gametophyte in angiosperms.
Sperm and egg nuclei fuse due to ______.
Which out of the following processes does not lead to the formation of clones.
Which among the following statements are true for unisexual flowers?
- They possess both stamen and pistil
- They possess either stamen or pistil
- They exhibit cross pollination
- Unisexual flowers possessing only stamens cannot produce fruits
Double fertilization is exhibited by ______
Double fertilization is essential for formation of ______.
Sketch and label the essential and accessory whorls of flower.
What is the structural unit of sexual reproduction in plant?
- Assertion: Primary endosperm nucleus is diploid.
- Reason: It is the product of double fertilisation.
