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Biology · 2024 · 3 marks
CBSE 2024 · Region 2 · Set 1 · Q22
(a) Why is "in vitro fertilization (IVF)" so named? State its importance. (b) Distinguish between GIFT and ZIFT.
(a)
Why is "in vitro fertilization (IVF)" so named ? State its importance.
(b)
Distinguish between GIFT and ZIFT.
Marking-scheme solution
(a)
• IVF – Fertilisation outside the human body in almost similar conditions as that of
the body.
• Helps infertile couples to enjoy parenthood
(b)
GIFT
ZIFT
Transfer of an ovum collected
from a donor into the fallopian tube of another female who cannot produce one but can provide suitable environment for fertilization.
Transfer of zygote or early
embryos (with upto $\displaystyle 8$ blastomeres) into the fallopian tube.
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