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Science · 2025 · 5 marks
CBSE 2025 · Region 1 · Set 1 · Q35
(a) (i) Write the functions of the following parts of human female reproductive system: (I) Ovary (II) Fallopian tube (III) Uterus (ii) State briefly…
(i)
Write the functions of the following parts of human female reproductive system :
(I)
Ovary
(II)
Fallopian tube
(III)
Uterus
(ii)
State briefly two contraceptive methods used by human males.
(i)
Differentiate between self-pollination and cross-pollination.
(ii)
Identify A, B and C in the diagram given below and write one function of each.
Marking-scheme solution
(a) (i)
(I) Ovary: Produces female gamete (egg) and female hormones(oestrogen).
(II) Fallopian tube: Site of Fertilization
(III) Uterus: Site of Implantation and embryonic development.
(ii) Methods of contraception used by males:
Mechanical barrier - Condoms
Surgical method - blocking the vas deferens in males (Vasectomy)
(b)
| Self-pollination | Cross-pollination |
| Pollen grains are transferred from stamen to the stigma of the same flower. | Transfer of pollen grains from stamen of one flower to the stigma of another flower of same species. |
(ii)
A - Stigma: Receives pollen and provides suitable environment for its germination.
B -Pollen tube: Carries males germ cells (gametes) to the female gamete situated in the ovary.
C - Egg Cell (Female germ cell): Fuses with male gamete and forms zygote.
All How do Organisms Reproduce? questions2025 question paperNCERT solutions: How do Organisms Reproduce?Practice How do Organisms Reproduce? →
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CBSE Class 10 Science past-paper question from the 2025 board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.