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प्रश्न
Name the part of a seed which grows into root.
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उत्तर
The part of the seed which grows into roots is called radicle.
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संबंधित प्रश्न
In the following diagram showing the structure of embryo of a dicot seed, what are the parts marked I, II and III sequentially?
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
A flower may have either male or female reproductive parts. Such a flower is called ______.
The fusion of male and female gametes is termed as ______.
Name the swollen lower part of the carpel.
What is the function of a flower?
What are the reproductive organs in a flower?
Fill in the following blank with suitable word :
The ovule becomes a .......... after fertilisation.
Fill in the blanks:
A stamen consists of ______ and ________.
Fill in the blank:
Seeds are formed from________.
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.
What is phototropism?
Accessory whorls : Calyx and corolla : : essential whorls : ______________
Pollen tube reaches the embryo sac via style.
The ovule of an angiosperm is technically equivalent to ______
Which of the following are the chemical components of the wall of pollen tube?
Which of the following is the outermost protective layer of anther?
Identify the female gametophyte in angiosperms.
Pollen grains are produced by ______
- Assertion: Primary endosperm nucleus is diploid.
- Reason: It is the product of double fertilisation.
