REPRODUCTION
REPRODUCTION IN ORGANISMS
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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sperm
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egg
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sexual reproduction
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zygote
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Detailed explanation-1: -Fertilization between the haploid gametes forms a diploid zygote. The zygote will undergo many rounds of mitosis and give rise to a diploid multicellular plant called a sporophyte. Specialized cells of the sporophyte will undergo meiosis and produce haploid spores.
Detailed explanation-2: -Fertilization is the process in which haploid gametes fuse to form a diploid cell called a zygote. To ensure that each zygote has the correct number of chromosomes, only one sperm can fuse with one egg.
Detailed explanation-3: -During fertilization, the sperm and egg unite to form a single cell called the zygote which contains all the chromosomes from both the sperm and the egg. The zygote divides into two cells by mitosis.
Detailed explanation-4: -If gametes were produced instead by mitosis each gamete would be diploid not haploid. During fertilization of diploid gametes, the zygote would become 4n=92. With each new generation the number of chromosomes would double.
Detailed explanation-5: -Zygotes divide through a process known as mitosis, in which each cell doubles (one cell becomes two, two becomes four, and so on). This two-week stage is known as the germinal period of development and covers the time of fertilization (also called conception) to the implantation of the blastocyst in the uterus.