In Class 12 Boards there will be Case studies and Passage Based Questions will be asked, So practice these types of questions. Study Rate is always there to help you. Free PDF Downloads of CBSE Class 12 Biology Chapter 3 Human Reproduction Case Study and Passage-Based Questions with Answers were Prepared Based on Latest Exam Pattern. Students can solve Class 12 Biology Case Study Questions Human Reproduction to know their preparation level.
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In CBSE Class 12 Biology Paper, There will be a few questions based on case studies and passage-based as well. In that, a paragraph will be given, and then the MCQ questions based on it will be asked.
Human Reproduction Case Study Questions With Answers
Here, we have provided case-based/passage-based questions for Class 12 Biology Chapter 3 Human Reproduction
Case Study/Passage-Based Questions
Case Study 1: The human male reproductive system comprises a pair of testes, primary sex organs associated with the formation of gametes, and the production of sex hormones. Study the given figure of the human male reproductive system and answer the following questions.
(i) Which of the following is correct for labeled part P?
| (a) P is rete testis which transports sperms outside. | (b) P is epididymis which secretes fluid that nourishes the sperms | (c) P is epididymis that carries sperms and secretion of seminal vesicles | (d) P is rete testis which lies along the inner side of each testis and stores the sperms |
Answer: (b) P is epididymis which secretes fluid that nourishes the sperms
(ii) Identify the correctly matched pair.
| (a) Q – Vasa efferentia | (b) R – Ejaculatory duct | (c) S – Seminal vesicle | (d) T – Cowper’s gland |
Answer: (b) R – Ejaculatory duct
(iii) Which statement is incorrect for Q?
| (a) It carries spermatozoa from epididymis to ejaculatory duct | (b) Q are only 2 in number. | (c) It arises from rete testis. | (d) It constitutes male sex accessory duct |
Answer: (c) It arises from rete testis.
(iv) Which structure passes through the prostate gland and carries sperms and secretion of seminal vesicles?
| (a) P | (b) T | (c) S | (d) R |
Answer: (d) R
(v) Assertion: Mucus present in the secretion of the bulbourethral gland decreases the number of sperms damaged during ejaculation
Reason: Mucus lubricates the end of the penis and the lining of the urethra.
(a) Both assertion and reason are true and the reason is the correct explanation of assertion.
(b) Both assertion and reason are true but the reason is not the correct explanation of assertion.
(c) Assertion is true but the reason is false.
(d) Both assertion and reason are false.
Answer: (a) Both assertion and reason are true and the reason is the correct explanation of assertion.
Case Study 2: The first menstruation is called menarche, which usually occurs between 12 and 15 years. In human females, menstruation is repeated at an average interval of about 28129 days and is called a menstrual cycle. It is regulated by certain hormones, as the pituitary gland is stimulated by releasing factors produced in the hypothalamus. The hormones produced by the pituitary gland influence the ovaries. The hormones secreted by the ovaries affect the walls of the uterus.
What is the term used to describe a female’s first menstruation?
A) Menopause
B) Menarche
C) Ovulation
D) Menstrual Cycle
Answer: B
At what age does menarche usually occur?
A) 6-9 years
B) 12-15 years
C) 18-21 years
D) 25-28 years
Answer: B
What is the average interval of the menstrual cycle in human females?
A) 28-29 days
B) 14-16 days
C) 40-45 days
D) 10-12 days
Answer: A
Which gland is stimulated by releasing factors produced in the hypothalamus to regulate the menstrual cycle?
A) Thyroid gland
B) Adrenal gland
C) Pancreas
D) Pituitary gland
Answer: D
How do the hormones produced by the pituitary gland influence the menstrual cycle?
A) They influence the kidneys
B) They influence the ovaries
C) They influence the liver
D) They influence the lungs
Answer: B
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