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प्रश्न
Fill in the blanks and rewrite the completed statements:
Lymph flows in _______________ direction.
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उत्तर
Lymph flows in one direction.
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संबंधित प्रश्न
Match the following:
| Column A | Column B |
| (i) Stigma | (a) Neuron |
| (ii) Pepsin | (b) Carpel |
| (iii) Dendrites | (c) Protein |
| (d) Stamen |
Sketch the reproductive parts of a flower.
The reproductive part of a plant is the ______.
Name the swollen lower part of the carpel.
What is the name of female part of a flower?
Fill in the following blank with suitable word :
Ovules contain ......... gametes of a plant.
Fill in the following blank with suitable word :
The ovule becomes a .......... after fertilisation.
Fill in the following blank with suitable word :
The female organ of reproduction in the flower is the...........
What is made in ovary of a flower?
Explain the terms 'cross-pollination'?
What type of plants reproduce by sexual reproduction method?
Name the part of a seed which contains stored food.
How does pollination occur?
What changes take place in the flower after fertilisation which lead to the formation of seeds and fruit?
The correct sequence of reproductive stages occurring in flowering plants is ______.
Put a tick mark (✓) against the correct alternative in the following statement
Pollen is produced in the:
Fill in the blanks:
A carpel consists of ________ , ________ and ________.
Fill in the blank:
Seeds are formed from________.
What part is played by stamens and carpels in reproduction?
The students of a class were asked by the teacher to study the different parts of an embryo of an angiosperm. Given below are the essential steps for the experiment :
A. Soak the seeds in plain water and keep them overnight.
B. Cut open the soaked seed and observe its different parts.
C. Take some healthy seeds in a petri-dish.
D. 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) C, A, D, B
(b) C, D, A, B
(c) A, C, D, B
(d) A, C, B, D
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
Draw a diagram of a pistil showing pollen tube growth into the ovule and label the following:
Pollen grain, male gamete, female gamete, ovary.
Draw a diagram of the longitudinal section of a flower and label on it sepal, petal, ovary and stigma.
Mention pollination types.
Bisexual : Hibiscus : : Unisexual : ___________
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?
Generally, in a pollen tube, which of the following moves to the tip of the tube?
In a flowering plant, archesporium gives rise to ______.
What would be the number of chromosomes in the cells of the aleurone layer in a plant species with 8 chromosomes in its synergids?
The flower of the Hibiscus plant is ______
Length of pollen tube depends on the distance between ______
Complete the table
| Carly x | ______ | ______ |
| ______ | petal | attract insects |
| Androecium | ______ | Male reproductive part |
| ______ | ______ | Female reproductive part. |
What is the structural unit of sexual reproduction in plant?
What are the agents for pollination?
The pollen tube usually enters the embryo sac ______.
