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प्रश्न
What is meant by 'unisexual flowers' and 'bisexual flowers'? Give two examples of each.
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उत्तर
Unisexual flowers have only one kind of sex organ, either stamen or pistil, e.g., flowers of papaya and water melon. Bisexual flowers have both stamen and pistil, e.g., flowers of Hibiscus and mustard.
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संबंधित प्रश्न
The anther contains ______.
State the name of the functional unit concerned with sexual reproduction.
Name the part made up of the stigma, style and ovary.
Where are the pollen grains produced?
Where is the female gamete formed in flowering plants?
How is the process of pollination different from fertilization?
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.
A student is asked to study the different parts of an embryo of pea seeds. Given below are the essential steps for the experiment :
(I) Soak the pea seeds in plain water and keep them overnight.
(II) Cut open the soaked seed and observe its different parts.
(III) Take some pea seeds in a petri dish.
(IV) 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) III, I, IV, II
(B) III, IV, I, II
(C) III, I, II, IV
(D) III, II, I, IV
(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.
Draw a diagram of the longitudinal section of a flower and label on it sepal, petal, ovary and stigma.
Fill in the blank by selecting suitable word:
Transfer of pollen grains from the anther to the stigma is known as______________.
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?
Write the events involved in the sexual reproduction of a flowering plant.
Discuss the first event and write the types.
Flowers showing ornithophily show few characteristic like ______.
The ovaries of different flowers may contain ______.
What is the structural unit of sexual reproduction in plant?
Sexual maturation of reproductive tissues and organs are necessary link for reproduction. Elucidate.
State the post-fertilisation changes that lead to fruit formation in plants.
