Class 10/Specimen Paper
Created by Titas Mallick
Biology Teacher • M.Sc. Botany • B.Ed. • CTET (CBSE) • CISCE Examiner
BioNotesBioNotesCreated by Titas Mallick
Biology Teacher • M.Sc. Botany • B.Ed. • CTET (CBSE) • CISCE Examiner
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ICSE Suggested Specimen Paper Based Preparation Guide
A woman's menstrual cycle is typically 28 days long. On which day of the cycle is she most likely to ovulate? Which hormone triggers this event?
Why is it necessary for the testes to be located in the scrotum outside the main body cavity?
Odd One Out: Testis, Ovary, Pancreas, Pituitary Gland.
Scenario: If the fallopian tubes of a woman are blocked (a condition known as tubal blockage), how would this affect her ability to become pregnant naturally? Would it affect her menstrual cycle? Explain.
In Vitro Fertilization (IVF)
IVF is an assisted reproductive technology (ART) that helps people with fertility problems to have a baby. The process involves several steps: 1) The woman is given hormones to stimulate her ovaries to produce multiple eggs. 2) The eggs are retrieved from the ovaries. 3) The eggs are fertilized with sperm in a laboratory dish ("in vitro" means "in glass"). 4) The resulting embryos are allowed to develop for a few days. 5) One or more healthy embryos are transferred into the woman's uterus, with the hope that one will implant and develop into a fetus. IVF is a clear example of how our detailed understanding of the reproductive system, from hormonal control to fertilization and implantation, can be applied to overcome biological challenges like infertility.
Assertion (A): The corpus luteum is essential for maintaining a pregnancy in its early stages. Reason (R): The corpus luteum secretes high levels of progesterone, which maintains the uterine lining (endometrium).
(a) Both (A) and (R) are true and (R) is the correct explanation of (A). (b) Both (A) and (R) are true but (R) is not the correct explanation of (A). (c) (A) is true but (R) is false. (d) (A) is false but (R) is true.
Some fertility-awareness methods of contraception involve tracking a woman's basal body temperature each morning. A slight, sustained increase in temperature is used to indicate that ovulation has already occurred. What is the hormonal basis for this temperature shift?