Biology - Study Mode

[#441] Which among the following is/are female hormones? (i) Estrogen (ii) Progesterone (iii) Testosterone
Correct Answer

(B) (i) and (ii)

Explanation

Solution: Estrogen and Progesterone are female hormones.

[#442] Fertilization in human takes place inside
Correct Answer

(B) Oviduct

Explanation

Solution: Fertilization in human takes place inside oviduct.

[#443] Which of the following is a work done by the placenta tissue in humans?
Correct Answer

(B) Removes waste matter from the embryo and provide nutrition to the embryo

Explanation

Solution: The placenta performs myriad functions to support fetal development, including facilitating blood flow, gas exchange, waste elimination, and serving as a protective barrier for the fetus against any infections the mother experiences during pregnancy.

[#444] Corpus luteum is associated with
Correct Answer

(D) Ovary

Explanation

Solution: The corpus luteum secretes estrogens and progesterone. The latter hormone causes changes in the uterus that make it more suitable for implantation of the fertilized ovum and the nourishment of the embryo. If the egg is not fertilized, the corpus luteum becomes inactive after 10–14 days, and menstruation occurs.

[#445] A gland below the bladder and surrounding the urethra is
Correct Answer

(A) Prostate

Explanation

Solution: Prostate gland is about the size of a walnut, and surrounds the neck of the bladder and urethra—the tube that carries urine from the bladder.