Question 13 Marks
Given below is a portion of the diagram to show the diagrammatic highly magnified view of a single human sperm. Complete the diagram to show its normal structure.
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Question 23 Marks
Given below is the schematic diagram of the sectional view of the human male reproductive system. 
State the functions of the parts numbered 1, 2, 3, 5, 8 and 11.
State the functions of the parts numbered 1, 2, 3, 5, 8 and 11.
Answer
View full question & answer→Functions of
i) Seminal vesicles
They produce the fluid which serves as the transporting medium for sperms.
ii) Prostate gland
It produces an alkaline secretion which mixes with the semen and helps neutralise the vaginal acids.
iii) Bulbo-urethral gland
It produces a secretion which serves as a lubricant for the semen to pass through the urethra.
iv) Testis
It produces the male gamete sperm and the male sex hormone testosterone.
v) Vas deferens
They carry the sperms from the epididymis to the urethra.
vi) Urethra
It serves as an outlet for delivering the sperms into the vagina.
i) Seminal vesicles
They produce the fluid which serves as the transporting medium for sperms.
ii) Prostate gland
It produces an alkaline secretion which mixes with the semen and helps neutralise the vaginal acids.
iii) Bulbo-urethral gland
It produces a secretion which serves as a lubricant for the semen to pass through the urethra.
iv) Testis
It produces the male gamete sperm and the male sex hormone testosterone.
v) Vas deferens
They carry the sperms from the epididymis to the urethra.
vi) Urethra
It serves as an outlet for delivering the sperms into the vagina.
Question 33 Marks
Given below is the schematic diagram of the sectional view of the human male reproductive system.
Name the parts numbered 1-11.
Name the parts numbered 1-11.
Answer
View full question & answer→1 - Seminal vesicles
2 - Prostate gland
3 - Bulbo-urethral gland
4 - Epididymis
5 - Testis
6 - Scrotum
7 - Urinary bladder
8 - Vas deferens
9 - Erectile tissue
10 - Penis
11 - Urethra
2 - Prostate gland
3 - Bulbo-urethral gland
4 - Epididymis
5 - Testis
6 - Scrotum
7 - Urinary bladder
8 - Vas deferens
9 - Erectile tissue
10 - Penis
11 - Urethra
Question 43 Marks
The following diagram represents the vertical sectional view of the human female reproductive system.
Label the parts indicated by the guidelines 1 to 8.
Label the parts indicated by the guidelines 1 to 8.
Answer
View full question & answer→1. Fallopian Tube
2. Infundibulum
3. Ureter
4. Vagina5
5. Ovary
6. Uterus
7. Urinary Bladder
8. Urethra
2. Infundibulum
3. Ureter
4. Vagina5
5. Ovary
6. Uterus
7. Urinary Bladder
8. Urethra
Question 53 Marks
Given below is a diagram of two systems together in the human body.
Describe the functions of the parts 3, 4, 5 and 6.
Describe the functions of the parts 3, 4, 5 and 6.
Answer
View full question & answer→Function of Fallopian Tube (part 3): The fallopian tubes carry the ovum released from the ovary to the uterus.
Function of Infundibulum (part 4):Infundibulum is the funnel shaped distal end of the ovary which picks up the released ovum and pushes it further on its passage into the fallopian tube.
Function of Ovary (part 5): Ovary produces female gametes i.e. ova.
Function of Uterus (part 6): Uterus allows the growth and development of the embryo.
Function of Infundibulum (part 4):Infundibulum is the funnel shaped distal end of the ovary which picks up the released ovum and pushes it further on its passage into the fallopian tube.
Function of Ovary (part 5): Ovary produces female gametes i.e. ova.
Function of Uterus (part 6): Uterus allows the growth and development of the embryo.
Question 63 Marks
Given below is a diagram of two systems together in the human body.
Name the parts numbered 1-10.
Name the parts numbered 1-10.
Answer
View full question & answer→| 1 | Kidney |
| 2 | Ureter |
| 3 | Fallopian Tube |
| 4 | Infundibulum |
| 5 | Ovary |
| 6 | Uterus |
| 7 | Urinary Bladder |
| 8 | Cervix |
| 9 | Vagina |
| 10 | Vulva |
Question 73 Marks
Differentiate between primary and accessory reproductive organs
Answer
View full question & answer→| Primary Reproductive Organs | Accessory Reproductive Organs |
| The primary reproductive organs produce sex cells. | The accessory reproductive organs help in the transfer and meeting of two kinds of sex cells leading to fertilization. |
| The primary reproductive organs do not help in the development of baby. | The accessory organs help in the growth and development of egg up to the birth of baby. |
| Example: Testes in males and ovaries in females. | Example: penis in males, Uterus, vagina in female. |
Question 83 Marks
What are the secondary sexual characters in the human male and female respectively?
Answer
View full question & answer→Secondary sexual characters in males:
(i) Beard and moustache
(ii) Stronger muscular built
(iii) Deeper voice Secondary sexual characters in females:
Secondary sexual characters in females:
(i) Breasts in females
(ii) Large hips
(iii) High pitched voice
(i) Beard and moustache
(ii) Stronger muscular built
(iii) Deeper voice Secondary sexual characters in females:
Secondary sexual characters in females:
(i) Breasts in females
(ii) Large hips
(iii) High pitched voice
Question 93 Marks
Complete the following table by writing the name of the structure or the function of the given structure:
| Structure | Function | ||
| 1 | Corpus luteum | 1 | …………… |
| 2 | ……………. | 2 | Produces male gametes in mass |
| 3 | Placental disc | 3 | …………………….. |
| 4 | . ……………. | 4 | Increases the force in uterine contractions during child birth |
| 5 | Umbilical cord | 5 | …………………. |
| 6 | Fallopian tube | 6 | ………………… |
Answer
View full question & answer→| Structure | Function | ||
| 1 | Corpus luteum | 1 | secretes progesterone & other hormones to prepare the uterine wall for the receival of the embryo. |
| 2 | Testes | 2 | produces male gametes in mass |
| 3 | Placental disc | 3 | supplies oxygen and nutrients to embryo |
| 4 | Oxytocin | 4 | increases the force in uterine contractions during child birth |
| 5 | Umbilical cord | 5 | connects placenta with foetus |
| 6 | Fallopian tube | 6 | The site of fertilization for the sperm and ovum |
Question 103 Marks
Differentiate between the following pair:
Uterus and vegina
Uterus and vegina
Answer
View full question & answer→Uterus is a hollow, pear shaped muscular organ located in the pelvic cavity. It is the site of implantation for the embryo after fertilisation whereas the vagina is the muscular tube extending from the cervix to the outside. At the time of sexual intercourse, the vagina receives the male penis and provides entry for the sperms.
Question 113 Marks
What is the significance of the testes being located in scrotal sacs outside the abdomen. Can there be any abnormal situation regarding their locations? If so, what is that and what is the harm caused due to it?
Answer
View full question & answer→Testes are responsible for the production of male gametes i.e. sperms. The normal body temperature does not allow the maturation of the sperms. Being suspended outside the body cavity, the temperature in the scrotal sac is 2 to 3oC which is the suitable temperature for the maturation of the sperms
When it is too hot, the skin of the scrotum loosens so that the testes hang down away from the body. When it is too cold, the skin contracts in a folded manner and draws the testes closer to the body for warmth.
In an abnormal condition, in the embryonic stage, the testes do not descend into the scrotum. It can lead to sterility or incapability to produce sperms.
When it is too hot, the skin of the scrotum loosens so that the testes hang down away from the body. When it is too cold, the skin contracts in a folded manner and draws the testes closer to the body for warmth.
In an abnormal condition, in the embryonic stage, the testes do not descend into the scrotum. It can lead to sterility or incapability to produce sperms.