Human Reproduction - Online Test
Q1. Pseudo dormancy differs from normal pregnancy in
Answer : Option D
Explaination / Solution:
Pseudo dormancy differs from normal pregnancy in absence of foetus in the uterus. Developmental change in endometrium, and development of ovum occurs during menstrual cycles.
Q2. The gaseous hormone that help in switching over its respiratory and circulatory system just after delivery is
Answer : Option D
Explaination / Solution:
The gaseous hormone that help in switching over its respiratory and circulatory system just after delivery is Nitroc Oxide (NO).
Q3. Parturition is induced by complex
Answer : Option D
Explaination / Solution:
Parturition is induced by a complex neuroendocrine mechanism. Fully developed foetus triggers signal from uterus to release oxytocin hormone from pituitary hormones.
Q4. The mammary glands of female starts producing milk
Answer : Option B
Explaination / Solution:
Memory gland of female undergo differentiation during the pregnancy and start producing milk towards the end of pregnancy by the process of lactation.
Q5. Monozygotic twins are produced when
Answer : Option A
Explaination / Solution:
Monozygotic twins are produced when first cleavage of zygote is followed by separation into two parts that develops independently into two babies.
Q6. Human embryo is about an inch in length after
Answer : Option D
Explaination / Solution:
Human embryo is about one inch in length after eight weeks. The heart is formed first after one month of pregnancy.
Q7. Progesterone is called pregnancy hormone as it helps in
Answer : Option D
Explaination / Solution:
Progesterone hormone is called as pregnancy hormone as it helps in maintaining pregnancy and brings about labour pain. This hormone also helps in growth and differentiation of foetus.
Q8. Statement I: Milk synthesis is under control of prolactin.
Statement II: release of milk is controlled by oxytocin of pituitary glands.
Statement II: release of milk is controlled by oxytocin of pituitary glands.
Answer : Option C
Explaination / Solution:
Milk synthesis is under control of prolactin inside the memory gland. Release of milk is controlled by oxytocin released by pituitary glands.
Q9.
Assertion: The first milk after the birth of baby is called colostrum.
Reason: Colostrum is rich in proteins, calories and antibiotics.
Answer : Option B
Explaination / Solution:
The first milk after the birth of baby is called colostrum. It is rich in proteins, calories and antibiotics necessary for proper health of baby.
Q10.
Assertion: Breast-feeding during the initial period of lactation is recommended by doctors for bringing up healthy baby.
Reason: initial period of lactation contain colostrum that contain several antibodies.
Answer : Option C
Explaination / Solution:
Breast feeding during initial few days of lactation is recommended by doctors because it contains immunoglobin containing colostrum that provide antibodies to fight infection.
