MONOCYSTIS:
https://www.sciencearena.in/2025/05/monocystis.html
EUGLENA:
https://www.sciencearena.in/2025/05/euglena.html
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https://www.sciencearena.in/p/education-resources.html
|
ATS COACHING CLASSES
BIOLOGY (XII) HUMAN
REPRODUCTION |
|
MULTIPLE CHOICE QUESTIONS
(MCQs) |
|
1 |
After spermatogenesis, the
sperm heads get embedded in which of the following cells? (a) Leydig cells (b) Sertoli cells (c) Germinal epithelium (d) Seminal Vesicles |
1 |
|
2 |
The hormone that regulates
the synthesis and secretion of androgens in human males is (a) GH (b) FSH (c) LH (d) prolactin |
1 |
|
3 |
Penetration of the sperm in
the ovum is followed by (a) formation of first polar
body (b) completion of meiosis II (c) first meiosis (d) dissolution of zona
pellusida |
1 |
|
4 |
The correct sequence of
hormone secretion from beginning of menstruation is (a)FSH, progesterone,
estrogen (b) estrogen, FSH,
progesterone (c) FSH, estrogen,
progesterone (d) estrogen, progesterone,
FSH |
1 |
|
5 |
Which one of the following hormones
is secreted by the human placenta that helps in the maintenances of
pregnancy? (a) Relaxin (b) Human chorionic
gonadotropin (c) Oxytocin (d) Human Placental Lactogen |
1 |
|
6 |
During embryonic development
the limbs and digits are formed in the human foetus by the end of (a) 15 days of pregnancy (b) 30 days of pregnancy (c) 45 days of pregnancy (d) 60 days of pregnancy |
1 |
|
7 |
The specific site for
fertilisation in human female is (a) infundibulum (b) uterus (c) ampulla (d) ampullary- isthmus
junction |
1 |
|
ASSERTION AND REASON
QUESTIONS (a) Both Assertion (A) and
Reason (R) are true and Reason (R) is the correct explanation of the
Assertion (A). (b) Both Assertion (A) and
Reason (R) are true and Reason (R) is not the correct explanation of the
Assertion (A). (c) Assertion (A) is true,
and Reason (R) is false. (d) Assertion (A) is false,
and Reason (R) True. |
|
8 |
ASSERTION: The perimetrium of uterus exhibits strong uterine
contractions during child birth. REASON: Oxytocin released from maternal pituitary causes strong
uterine contraction. |
1 |
|
9 |
ASSERTION: Parturition is induced by a complex neuro- endocrine
mechanism. REASON: At the end of gestation period, the maternal pituitary
releases prolactin which causes uterine contractions. |
1 |
|
10 |
ASSERTION: Spermiogenesis is the transformation of spermatids
into spermatozoa. REASON: One spermatids develops into one spermatozoon during
spermiogenesis. |
1 |
|
ASSERTION: Progesterone and Estrogen production is reduced during
menstrual phase. REASON: The withdrawal of LH causes degeneration of the corpus
luteum. |
1 |
|
VERY SHORT ANSWER QUESTIONS |
|
12 |
Differentiate between
spermiogenesis and spermiation. |
2 |
|
13 |
Explore the role of
pituitary and sex hormones in the process of spermiogenesis |
2 |
|
14 |
List the three hormones
produced in woman only during pregnancy. What happens to the levels of
estrogen and progesterone during pregnancy? |
2 |
|
15 |
Comment on the role of placenta
as an endocrine gland. |
2 |
|
16 |
Explain the process of
hormonal regulation of spermiogenesis. |
2 |
|
SHORT ANSWER TYPE QUESTIONS |
|
17 |
Name the different parts of
a human sperm and write their involvement in the process of fertilisation. |
3 |
|
18 |
Draw a sectional view of
human ovary showing the different stages of developing follicles, corpus
luteum and ovulation. |
3 |
|
19 |
Draw a labelled diagrammatic
sectional view of a human seminiferous tubules. |
3 |
|
20 |
Explain the role of
pituitary and ovarian hormones in the menstrual cycle of human females. |
3 |
|
21 |
Describe the process of
parturition in humans. |
3 |
|
22 |
Why is breast feeding recommended
during the initial period of an infant’s growth? Give reason. |
3 |
|
23 |
Explain the formation of
placenta after implantation in a human females. |
3 |
|
LONG ANSWER TYPE QUESTIONS |
|
24 |
Describe the development of
man upto the formation of three germ layers. |
5 |
|
25 |
Give a brief account of
spermatogenesis and oogenesis. |
5 |
|
26 |
Briefly describe the human
female reproductive system with suitable diagram. |
5 |
|
27 |
Explain the process of
fertilisation of an ovum and the events that follow till in a human female. |
5 |
|
28 |
Explain the ovarian and
uterine events taking place along with the role of pituitary and ovarian
hormones, during menstrual cycle in a normal human female under the following
phases: (i) Follicular phase/
proliferative phase (ii) Luteal phase/ secretory
phase (iii) Menstrual phase |
5 |
|
29 |
(a) Name the hormone that
initiates spermatogenesis in humans. Describe the process of spermatogenesis
in sequence mentioning the ploidy of the cells at each step. (b) Draw the diagram of a
mature human sperm and label the parts (i) help it reaching to the
ovum (ii) providing energy for it
to reach the ovum (iii) helping it to gain
entry into the ovum |
5 |
|
30 |
(a) Explain the menstrual
phase in a human female. State the levels of ovarian and pituitary hormones
during this phase. (b) Why is follicular phase
in the menstrual cycle is also referred as proliferative phase? Explain. (c) Explain the events that
occur in a Graafian follicle at the time of ovulation and thereafter. (d) Draw a Graafian follicle
and label antrum and secondary oocyte. |
5 |
|
CASE BASED STUDY QUESTIONS |
|
31 |
Read the passage given below and answer the following questions. A 15-year-old female has not yet started
menstruating. She is otherwise healthy, but her mother is concerned. 1. What are the possible physiological
reasons for delayed menarche? 2. Which hormones play a role in the onset
of puberty in females? 3. What diagnostic tests might a doctor
recommend? 4. How does nutrition and body fat
percentage affect reproductive maturity? |
4 |
|
32 |
Read the passage given below and answer the following questions. A couple in their early 30s has been
trying to conceive for over a year without success. 1. What are potential causes of
infertility in males and females? 2. What tests can be used to assess male
fertility? 3. What is the role of ovulation tracking
in female fertility assessment? 4. How do assisted reproductive
technologies like IVF work? |
4 |
|
33 |
Read the passage given below and answer the following questions. A 22-year-old woman wants to delay
pregnancy for a few years and is exploring contraceptive options. 1. What are the different types of
contraceptives available? 2. How does a hormonal IUD differ from a
copper IUD? 3. What are the pros and cons of oral
contraceptive pills? 4. How do contraceptives impact the menstrual
cycle? |
4 |
|
34 |
Read the passage given below and answer the following questions. A 28-year-old woman presents with
abdominal pain and a positive pregnancy test. Ultrasound shows no embryo in
the uterus. 1. What is an ectopic pregnancy and where
does it usually occur? 2. Why is an ectopic pregnancy dangerous? 3. What are the symptoms and diagnostic
tools for ectopic pregnancy? 4. What are the treatment options? |
4 |
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