Practice MCQ Questions and answers on Biology-GK

In test tube baby fertilization of ova takes place in test tube and development of embryo occur in uterus.

The placenta is the structure which attaches the developing embryo with the mother. This is the structure which is attached to the umbilical cord of the embryo. The placenta helps to provide nutrition to the embryo. This structure also carries oxygen to the embryo and the wastes away from the embryo.

Study of female reproductive system is gyneocology.

Estrogen and Progesterone are female hormones.

Fertilization in human takes place inside oviduct.

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.

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.

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.

Some snakes are able to perceive and react to substrate-borne vibrations. The vibrations are transmitted directly from skull to inner ear where it is sensed by brain. They also detect vibrations directly with receptors on their body surface.
Thus, the correct answer is option B.

A person with color-blindness has trouble seeing red, green, blue, or mixtures of these colors. The most common type is red-green color-blindness, where red and green are seen as the same color.