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प्रश्न
Nervous system develops from ______ of embryonic layer.
विकल्प
endoderm
chorion
ectoderm
mesoderm
उत्तर
Nervous system develops from ectoderm of embryonic layer.
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संबंधित प्रश्न
Where is DNA found in a cell ?
Egg laid after fertilisation is made up of a single cell.
What is the name of the reproductive process :
which involves only one parent?
Which type of reproduction :
does not involve gametes?
What is the importance of DNA copying in reproduction? Explain with an example.
The offsprings formed by asexual reproduction method have greater similarity among themselves because :
(i) asexual reproduction involves only one parent
(ii) asexual reproduction involves two parents
(iii) asexual reproduction involves gametes
(iv) asexual reproduction does not involve gametes
(a) (i) and (ii)
(b) (i) and (iii)
(c) (ii) and (iv)
(d) (i) and (iv)The offsprings formed by asexual reproduction method have greater similarity among themselves because :
(i) asexual reproduction involves only one parent
(ii) asexual reproduction involves two parents
(iii) asexual reproduction involves gametes
(iv) asexual reproduction does not involve gametes
(a) (i) and (ii)
(b) (i) and (iii)
(c) (ii) and (iv)
(d) (i) and (iv)
The method of asexual reproduction in plants in which callus is produced is :
Name two animals which undergo external fertilisation.
What type of fertilisation takes place in fish?
Imagine all the seeds produced by a plant happen to fall under the same plant and sprout into new plants. Mention any two problems that will be faced by the new plants.
Differentiate between the following:
Asexual reproduction and sexual reproduction.
Give reason for the following:
Vegetative propagation is practised for growing only some type of plants.
Multiple choice question.
The ploidy level is not the same in ______.
Draw a well labelled diagram of the monocot seed you have studied.
What is morula?
Name two organisms that reproduce through budding.
Assertion and Reason types of Question.
Assertion: In potatoes, shoot arises from eyes.
Reason: Eyes represent the buds.
In a flower, the parts that produce male and female gametes (germ cells) are
How is reproduction in Hydra different from that in Amoeba?
