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प्रश्न
Pollen grains are formed by _________ division in locules of anthers.
विकल्प
meiosis
mitosis
amitosis
binary
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उत्तर
Pollen grains are formed by meiosis division in locules of anthers.
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संबंधित प्रश्न
Name the parts A, B and C shown in the diagram and write their functions.
Name the parts labelled as A, B, C and D in the diagram given below:-
(i) Name the part marked 'A' in the diagram.
(ii) How dose 'A' reachese part 'B'?
(iii) State the importance of the part 'C'.
(iv) What happens to the part marked 'D' after fertilisation is over?
Name and differentiate between the two modes of pollination in flowering plants.
Mention the changes a flower undergoes after fertilisation.
Write the names of those parts of a flower which serve the same function as the following do in the animals :
(i) testis,
(ii) sperm,
(iii) ovary,
(iv) egg
Mature ovary forms the ______.
Where are the pollen grains produced?
What is the function of a flower?
Fill in the following blank with suitable word :
Pollen grains contain ............ gametes of a plant.
Fill in the following blank with suitable word :
The ovary of a flower becomes ....... after fertilisation.
Fill in the following blank with suitable word :
Flowering plants reproduce by ...........method of reproduction.
Fill in the following blank with suitable word :
The name of the structure in the flower in which the male gamete is formed is...........
What is seed?
Fill in the blank by selecting suitable word:
A flower that bears both the male and the female parts is known as __________ flower.
Find the odd-one out, giving reason:
Anther, pollen grain, ovule male gamete
Mention the function of Stigma.
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
List any two differences between pollination and fertilization.
Mention pollination types.
Find an odd one out.
Identify the parts A, B, C, and D?
Where does the endothecium layer of anther lobes is present?
Which of the following is the outermost protective layer of anther?
How many middle layers are generally present in the wall of the anther lobes?
What would be the number of chromosomes of the aleurone cells of a plant with 42 chromosomes in its roots tip cells?
The flower of the Hibiscus plant is ______
Pollen grains are produced by ______
Length of pollen tube depends on the distance between ______
Is the chromosome number of zygote, embryonal cells and adult of a particular organism always constant? How is the constancy maintained in these three stages?
The ovaries of different flowers may contain ______.
What is the structural unit of sexual reproduction in plant?
The figure below shows the concept of double fertilization. Complete the flow chart showing the progress at each step:
Name the reproductive parts of an angiosperm. Where are these parts located? Explain the structure of its male reproductive part.
Type of sexual reproduction is ______.
The pollen tube usually enters the embryo sac ______.
State the post-fertilisation changes that lead to fruit formation in plants.
