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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
Name the parts labelled as A, B, C and D in the diagram given below:
"The chromosomal number of the sexually producing parents and their offspring is the same." Justify this statement.
Mention the changes a flower undergoes after fertilisation.
Sketch the reproductive parts of a flower.
State the name of the functional unit concerned with sexual reproduction.
Where is the female gamete formed in flowering plants?
Fill in the following blank with suitable word :
Flowering plants reproduce by ...........method of reproduction.
Fill in the following blank with suitable word :
The male organ of reproduction in the flower is the.......... .
Draw a neat sketch of the carpel of a flower. Mark in it stigma, style and ovary.
Explain the term 'fertilisation'.
Name the part of a seed which contains stored food.
How does pollination occur?
Describe the process of fertilisation in a flower with the help of labelled diagrams.
Draw a neat diagram of a flower showing its various parts. In this diagram mark stem, receptacle, sepals, petals, stamen and carpel.
The part of a seed which grows and develops into root on germination is :
(a) cotyledon
(b) plumule
(c) follicle
(d) radicle
Fill in the blank by selecting suitable word:
A flower that bears both the male and the female parts is known as __________ flower.
What are the male and female gametes in a flowering plant?
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) 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.
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
What is phototropism?
What is cleistogamy? Write one advantage and one disadvantage of it, to the plant.
Find an odd one out.
Find an odd one out.
Calyx : Sepals : : Corolla : ________________
The essential parts of a flower are ______.
In which of the following manner the arrangement of megaspores in a tetrad is observed in angiosperms?
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?
The flower of the Hibiscus plant is ______
Pollen grains are produced by ______
Length of pollen tube depends on the distance between ______
Where is the zygote located in the flower after fertilization?
Given below is a diagram of a germinating seed. Label the parts that:
- gives rise to future shoot.
- gives rise to future root system.
- stores food.
State the post-fertilisation changes that lead to fruit formation in plants.
In male reproductive whorl of a flower the archesporial cells are formed by ______.
