Question

Distinguish between spermatogeneis and oogenesis?


class 12th CBSE Biology sample paper

Answer 1

Spermatogenesis:
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1)it occurs in testis.
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2)spermatogonia change to primary spermatocyte.
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3)A primary spermatocyte divides to form two secondary spermatocytes.
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4)a secondary spermatocytes divided to form two spermatids.
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5)No polar bodie is formed.
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6)A spermatogonium forms four spermatogonia.
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Oogenesis:
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1)It occures in ovaries.
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2)Oogonia change into primary oocyte.
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3)A primary oocytes divides to form one secondary oocyte and one polar bodie.
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4)A secondary oocytes divides to form one ootid (ovum) one polar body.
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5)polar bodies are formed.
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6)An ogonium forms one ovum (egg).