Light is needed for photosynthesis.
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Sperm is necessary for reproduction because sperm trigger egg activation. the correct answer is option(b).
The biological process of reproduction is how new, distinct creatures, or "offspring," are created from their "parent" or "parents." Every single organism exists as a result of reproduction, which is a fundamental aspect of all known life. Asexual and sexual reproduction are the two types.
Male reproductive cells, often known as sperm or spermatozoa, are generated by most mammals. All sperm are flagellated, or have a whip-like tail, with the exception of nematode worms, decapods (like crayfish), diplopods (like millipedes), and mites. The complex material known as semen is produced by the male reproductive system. Most of the stuff in the fluid is water, plasma, and mucus (a lubricating substance). It also has 5 to 25 calories and is made up of trace levels of calcium and other important elements.
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Answer:
Cells with 2 copies of each chromosome are called <u><em>diploid</em></u>, whereas cells with 1 copy of each chromosome are called <u><em>haploid</em></u>.
Explanation:
Cells which comprise of homologous pairs of chromosomes are known as haploid cells. For example, the autosomal cells in humans contain 23 pairs i.e 46 chromosomes in them.
Cells which have only one copy of the chromosome are termed as haploid cells. For example, the sex cells of the humans i.e egg cell and sperm cells comprise of 23 chromosomes. This is half the number of chromosomes than the autosomal cells.