The structure that stores sperm and allows maturation is the: MCQ with Answer and Explanation

Question
The structure that stores sperm and allows maturation is the:
A. Seminal vesicle
B. Vas deferens
C. Prostate gland
D. Epididymis
Answer: Option D
Solution (By JKExamLibrary)
The epididymis is a coiled tube on the testis where sperm mature and are stored. Seminal vesicles and prostate add fluid, vas deferens transports sperm.
This question belongs to: Science Biology
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Question #1
Consider the following statements about the circulatory system of insects:
1. It is an open circulatory system.
2. Hemolymph is the circulating fluid.
3. Blood is contained in vessels at all times.
Which of the above is/are correct?
A. 2 and 3 only
B. 1 and 3 only
C. 1, 2, and 3
D. 1 and 2 only
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Correct Answer: Option D

Explanation:
Insects have an open circulatory system where hemolymph bathes organs directly, not always in vessels. Thus, 3 is incorrect.
This question belongs to: Science Biology
Question #2
The corpus luteum secretes which hormone that maintains pregnancy in early stages?
A. Luteinizing hormone
B. Estrogen
C. Human chorionic gonadotropin (hCG)
D. Progesterone
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Correct Answer: Option D

Explanation:
The corpus luteum, formed from the ruptured follicle after ovulation, secretes progesterone (and some estrogen) which prepares the endometrium for implantation and maintains early pregnancy until the placenta takes over (around 8-10 weeks). hCG, produced by the placenta, maintains the corpus luteum. Progesterone is crucial for maintaining the uterine lining.
This question belongs to: Science Biology
Question #3
The hormone that stimulates the release of growth hormone from the pituitary is:
A. Dopamine
B. Cortisol
C. Somatostatin
D. Growth hormone-releasing hormone (GHRH)
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Correct Answer: Option D

Explanation:
GHRH, from the hypothalamus, stimulates the anterior pituitary to secrete growth hormone. Somatostatin inhibits GH release. Dopamine inhibits prolactin.
This question belongs to: Science Biology
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