During the reproduction process in humans, after which process does a new individual start getting formed?

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Solution

In humans, fertilization results in the formation of a zygote. This zygote later develops into a complete organism. The formation of zygote marks the formation of a new individual. Thus, after fertilization, a new individual starts getting formed.

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Q. When a human female reaches a certain age then vaginal bleeding occurs for a few days after regular time intervals.
(a) What is this process known as (i) in scientific terms, and (ii) in everyday language?
(b) At what approximate age this process starts in human females? When is the human female said to have attained at this stage?
(c) After how much time is this process repeated? For how many days does this process usually last?
(d) What does the onset of this process in human females signify?
(e) At which particular event in the life of a human female does this process stop temporarily but start again?
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Why do organisms reproduce?

After all, reproduction is not necessary to maintain the of the individual organisms, unlike the essential life of an individual respiration, or excretion.on the other hand, if individual organism is going to create more individuals ,a lot of its energy will be spent in the process.

So why should an individual organism waste energy on a process it does not need to stay alive?

Q. New individuals formed by asexual method of reproduction have greater similarity among themselves because:
(i) Asexual reproduction involves only one parent.
(ii) Asexual reproduction does not involve gametes.
(iii) Asexual reproduction occurs before sexual reproduction.
(iv) Asexual reproduction occurs after sexual reproduction.

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