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प्रश्न
Egg laid after fertilisation is made up of a single cell.
पर्याय
True
False
उत्तर
This statement is True.
Explanation:
During human fertilisation, the egg, sperm, and egg fuse to produce a single nucleus, which leads to the development of zygotes, which are single cells.
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संबंधित प्रश्न
What do you mean by DNA?
Explain the importance of reproduction in organisms.
Why are budding, fragmentation and regeneration, all considered to be asexual type of reproduction?
The method of asexual reproduction in plants in which callus is produced is :
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.
Define the following:
Regeneration
List any two different forms asexual reproduction.
Answer the following question.
The growing size of the human population is a cause of concern for all people. The rate of birth and death in a given population will determine its size. Reproduction is the process by which organisms increase their population. The process of sexual maturation for reproduction is gradual and takes place while general body growth is still going on. Some degree of sexual maturation does not necessarily mean that the mind or body is ready for sexual acts or for having and bringing up children. Various contraceptive devices are being used by human beings to control the size of the population.
(a) List two common signs of sexual maturation in boys and girls.
(b) What is the result of reckless female foeticide?
(c) Which contraceptive method changes the hormonal balance of the body?
(d) Write two factors that determine the size of a population.
Multiple choice question.
Insect pollinated flowers usually posses ______
Multiple choice question.
In ovule, meiosis occurs in ______
Multiple choice question.
The ploidy level is not the same in ______.
The single shield-shaped cotyledon in monocot seed is known as ______.
Nervous system develops from ______ of embryonic layer.
Write two types of reproduction in plants.
The plant which propagates with the help of its leaves is ______.
Assertion and Reason types of Question.
Assertion: In Banyan prop roots grow horizontally from the tree.
Reason: They give additional support to the tree.
Which of the following nucleus is unlike other nuclei in the female gametophyte of angiosperms?
Give reason for the following:
All multicellular organisms cannot give rise to new individuals through fragmentation or regeneration.
Define the following term:
Reproduction
