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प्रश्न
Explain the post fertilization changes that occur in the ovary of a flower.
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उत्तर
The fusion of the female gamete (ovum or egg) and the male gamete created in the pollen tube by the pollen grains is known as fertilisation. The ovary transforms into the fruit after fertilisation, while the ovary wall transforms into the pericarp.
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संबंधित प्रश्न
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
Mature ovary forms the ______.
Fill in the following blank with suitable word :
Ovules contain ......... gametes of a plant.
Name the part of a seed which contains stored food.
Draw a labelled diagram of a bisexual flower.
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
Write the names of male and female reproductive parts of a flower.
Differentiate between self-pollination and cross-pollination.
Flowers showing ornithophily show few characteristic like ______.
Pineapple fruit develops from ______.
