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Human Reproduction — BIOLOGY STD 12 Science — Question

Gujarat BoardEnglish MediumSTD 12 ScienceBIOLOGYHuman Reproduction5 Marks
Question
Write difference between Spermatogenesis and Oogenesis.
✓

Answer

Differences between Spermatogenesis and Oogenesis :
SpermatogenesisOogenesis
1. It occurs in testis of human males1. It occurs in ovaries of human females.
2. It is continuous process which continues whole life.2. It is stopped after a definite age.
3. All the spermatogonia take part in formation of sperm.3. Only one follicle cell develops as oocyte while other several follicle cells degenerate in growth phase.
4. Both the maturation division completed in testis.4. The 2nd maturation division completes outside the ovary in female.
5. Growth phase is of short duration and involves lesser growth.5. Growth phase is of longer duration and involves more growth.
6. Four spermatids are formed from one primary spermatocyte in this process.6. Only one ootid and 3 polar bodies are formed from one primary oocyte.
7. Each spermatid is transformed into sperms by metamorphosis.7. No metamorphasis occurs during this phase.
8. Ovulation like process does not occur.8. Ovulation occurs.
9. Sperms are spindle shaped and motile9. Ovum is oval shaped and non-motile.

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