Reproductive System Class-10 Goyal Brothers Prakashan ICSE Biology Solutions Ch-12. We Provide Solutions of Test yourself , MCQs, Very Short Answer, Short Answer of Exercise-12 The Reproductive System. All solutions are given as council prescribe guideline for next upcoming exam. Visit official Website CISCE for detail information about ICSE Board Class-10 Biology.
Ch-12 The Reproductive System Goyal Brothers Prakashan ICSE Class-10 Biology Solutions
| Board | ICSE |
| Publications | Goyal Brothers publications |
| Subject | Biology |
| Class | 10th |
| Writer | Dr. K.K. Aggrawal |
| Chapter-12 | The Reproductive System |
| Topics | Solutions of Test Yourself MCQs, Very short and Short Answer Questions |
| Edition | for 2022-2023 Academic Session |
Test Yourself-1
Ch-12 The Reproductive System Goyal Brothers Prakashan ICSE Class-10 Biology Solutions
(Page-175)
1. State the main function of the following:
(i) Seminal vesicle
(ii) Prostate gland
(iii) Cowper’s gland
(iv) Leydig cells
Answer :
(i) A seminal vesicle is a part of the anatomy that’s typically considered male. The two seminal vesicles are glands that produce the fluids that will turn into semen. The vesicles may also be called seminal glands or vesicular glands
(ii) The prostate gland is located just below the bladder in men and surrounds the top portion of the tube that drains urine from the bladder (urethra). The prostate’s primary function is to produce the fluid that nourishes and transports sperm (seminal fluid).
(iii) They produce thick clear mucus prior to ejaculation that drains into the spongy urethra. Though it is well established that the function of the Cowper’s gland secretions is to neutralize traces of acidic urine in the urethra, knowledge regarding the various lesions and associated complications of this gland is scarce
(iv) Leydig cells are interstitial cells located adjacent to the seminiferous tubules in the testes. The best-established function of Leydig cells is to produce the androgen, testosterone, under the pulsatile control of pituitary luteinizing hormone (LH)
2. State whether the following sentences are True (T) or False (F):
(i) Semen is a mixture of sperms and fluid containing nutrients.
(ii) Seminiferous tubules secrete testosterone.
(iii) Prostate gland pours an alkaline secretion into the semen.
(iv) The middle piece of a sperm contains Golgi complex.
Answer :
(i) True
(ii) False
(iii) True
(iv) False
Test Yourself-2
Ch-12 The Reproductive System Goyal Brothers Prakashan ICSE Class-10 Biology Solutions
(Page-181)
1. State whether the following sentences are true (T) or false (F) :
(i) Uterus forms placenta for the development of the foetus.
(ii) Ampulla receives eggs from ovary.
(iii) Fallopian tubes open in cervix of uterus.
(iv) Endometrium is rich in tubular glands.
Answer :
(i) True
(ii) False
(iii) False
(iv) True
2. Name the phase of menstrual cycle where following changes take place :
(i) Follicle matures
(ii) Corpus luteum degenerates
(iii) Egg is released
(iv) Emptied follicle turns into corpus luteum
Answer :
(i) Follicular phase
(ii) luteal phase
(iii) Ovulation
(iv) Luteal phase
Test Yourself-3
Ch-12 The Reproductive System Goyal Brothers Prakashan ICSE Class-10 Biology Solutions
(Page-184)
1. Fill in the blanks :
(i) The acrosome releases chemical known as …..hyaluronidase and acrosin………
(ii) Corpus luteum produces the pregnancy maintaining hormone ….progesterone…………
(iii) Placenta is connected to the foetus by ….umbilical cord…………..
(iv) Child birth in viviparous mammals is called …..Parturition……………
2. Name two hormones which are secreted by placenta :
Answer:-
oestrogen and progesterone
A. MULTIPLE CHOICE QUESTIONS TYPE
Ch-12 The Reproductive System Goyal Brothers Prakashan ICSE Class-10 Biology Solutions
(Page-187)
CHOOSE THE MOST APOPRIATE ANSWER
1. The site of maturation of human sperms is the
(a) Seminiferous tubule
(b) Interstitial cells
(c) Epididymis
(d) Prostate gland
Answer : (c) Epididymis
2. Acrosome helps the sperm to
(a) locate the ovum
(b) swim to the ovum
(c) penetrate the ovum
(d) none of these
Answer : (c) penetrate the ovum
3. The onset of menstruation in the female is termed
(a) Ovulation
(b) Menarche
(c) Menopause
(d) Parthenogenesis
Answer : (b) Menarche
4. The technical term for the fertilised egg is
(a) Placenta
(b) Zygote
(c) Marula
(d) Blastula
Answer : (b) Zygote
5. A single highly coiled tube where sperms are stored, get concentrated and mature is known as
(a) Epididymis
(b) Vas efferentia
(c) Vas deferens
(d) Seminiferous tubule
Answer : (a) Epididymis
B. VERY SHORT ANSWER QUESTIONS
Ch-12 The Reproductive System Goyal Brothers Prakashan ICSE Class-10 Biology Solutions
(Page-187)
Question 1. Name the following :
(i) The phase in the menstrual cycle in which the remnant of follicle in the ovary turns to corpus
(ii) Structure which connects the placenta with the foetus.
(iii) Onset of menstruation in a girl around the age of 13 years.
(iv) The mucous membrane lining the uterus.
(v) The place where fertilization occurs in the female reproductive system.
(vi) Thin walled sac of skin that covers the testes.
(vii) The permanent stoppage of the menstrual cycle in a woman aged 50 years.
(viii) Fixing of developing zygote on the uterine wall.
(ix) The accessory gland in human male whose secretion activates the sperms.
(x) A kind of twins formed from two fertilised eggs.
Answer :
(i) Lateral phase in the menstrual cycle in which the remnant of follicle in the ovary turns to corpus luteum.
(iii) The first menstruation (menarche) is the most definitive sign of puberty in females. It occurs at an average age of 13 years i
(iv) Endometrium: the mucosa of the uterus.
(v) Fertilization of an egg by a sperm normally occurs in the fallopian tubes
(vi) scrotum, in the male reproductive system, a thin external sac of skin that is divided into two compartments; each compartment contains one of the two testes, the glands that produce sperm, and one of the epididymides, where the sperm is stored.
(vii) Menopause is a stage in life when you stop having your monthly period. It’s a normal part of aging and marks the end of your fertile, reproductive years. Menopause typically occurs in your late 40s to early 50s.
(viii) Implantation is a process in which a developing embryo, moving as a blastocyst through a uterus, makes contact with the uterine wall and remains attached to it until birth
(ix) Name the accessory gland in human males whose secretion activates the sperms. Seminal vesicles secrete seminal fluid that activates the sperm.
(x) To form identical or monozygotic twins, one fertilised egg (ovum) splits and develops into two babies with exactly the same genetic information. To form fraternal or dizygotic twins, two eggs (ova) are fertilised by two sperm and produce two genetically unique children
Question 2. Mention if the following statements are true or false. if false, rewrite the wrong ones in correct form by changing only the words in bold face:
(i) In human, the ovum is fertilised in uterus.
(ii) Middle piece of sperms contain nucleus.
(iii) Testes are present in the abdominal cavity.
(iv) Narrow part of uterus is called vulva.
(v) Process of fusion of the sperm nucleus and the egg nucleus is termed implantation.
Answer :
(i) False , In human, the ovum is fertilised in fallopian tube
(ii) False, Head piece of sperms contain nucleus.
(iii) False, Testes are present out the abdominal cavity.
(iv) False, Narrow part of uterus is called cervix.
(v) False, Process of fusion of the sperm nucleus and the egg nucleus is termed fertilization
Question 3. Given below is an example of a particular structure and its special functional activity. e.g, glomerulus and ultrafiltration.
On a similar pattern complete the following:
(i) Corpus luteum and …
(ii) Seminal vesicle and…..
Answer :
(i) produces the hormone progesterone
(ii) produce the fluids that makes the sperm active
Question 4. Give the biological/technical term for the following :
(i) Cessation of menstruation in females.
(ii) Non identical twins produced by the fertilization of two eggs.
(iii) The permanent stoppage of menstruation at about the age of 45 years in a female.
(iv) The canal through which the testes descend into the scrotum just before the birth of a male baby
(v) When an ovum gets fertilized, menstrual cycle stops temporarily in a woman.
Answer :
(i) Primary amenorrhea
(ii) Fraternal or ‘dizygotic’ twins
(iii) Menopause
(iv) inguinal canal
(v) Menopause
C. SHORT ANSWER QUESTIONS
Ch-12 The Reproductive System Goyal Brothers Prakashan ICSE Class-10 Biology Solutions
(Page-188)
Question 1. Define:
(i) Fertilisation
(ii) Puberty
(iii) Myometrium
(iv) Parturition
(v) Ovulation
(vi) Hernia
Answer :
(i) The process of combining the male gamete, or sperm, with the female gamete, or ovum.
(ii) Puberty is the time in life when a boy or girl becomes sexually mature. It is a process that usually happens between ages 10 and 14 for girls and ages 12 and 16 for boys. It causes physical changes, and affects boys and girls differently.
(iii) The muscular outer layer of the uterus.
(iv) It is the process of the contraction of the uterus at regular intervals that helps in the delivery of the baby at the end of pregnancy
(v) The release of an egg from an ovary during the menstrual cycle.
(vi) In general, a hernia starts with pressure on an organ or your intestines. A hernia forms when this pressure happens in the same area as a weakened muscle or tissue. Some people are born with weak muscles or tissue that isn’t fully developed. However, most people get hernias as their bodies age and their muscles weaken
Question 2. Give differences between the following :
(i) Implantation and Gestation (definition).
(ii) Corpus callosum and Corpus luteum (Function)
(iii) Menarche and menopause.
(iv) Hymen and clitoris
(v) Testosterone and Progesterone
Answer :
(i) The process of fixing of the blastocyst to the wall of the uterus / endometrium is termed implantation. The full term of the development of the embryo in the uterus is called gestation.
(ii) Corpus callosum is the nerve fibres that join the cerebral hemispheres whereas corpus luteum is a hormone secreting body in female reproductive system after ovulation
(iii)
| Menarche | Menopause |
|---|---|
| It is the beginning of women reproductive life. | It is the end of women reproductive life. |
| During menarche, there is an increase in bone mass. | During menopause, there is a decrease in the bone mass. |
(iv) Hymen is a thin membrane that partially covers the opening of vagina in young females. Clitoris is a small erectile structure located in the uppermost angle of vulva in front of the urethral opening.
(v) The main reproductive hormones estrogen, testosterone, and progesterone are instrumental in sexuality and fertility. They are responsible for pregnancy, puberty, mensuration, menopause, sex drive, sperm production and more. These hormones are produced in the ovaries (in females) and testes (in males)
Question 3. Mention the functions of:
(i) Placenta
(ii) Amnion
(iii) Testicles
(iv) Sperm duct
(v) Oestrogen
(vi) Hymen
Answer :
(i) The placenta is an organ that develops in the uterus during pregnancy. This structure provides oxygen and nutrients to a growing baby. It also removes waste products from the baby’s blood. The placenta attaches to the wall of the uterus, and the baby’s umbilical cord arises from it.
(ii) Lined with ectoderm and covered with mesoderm (both are germ layers), the amnion contains a thin, transparent fluid in which the embryo is suspended, thus providing a cushion against mechanical injury. The amnion also provides protection against fluid loss from the embryo itself and against tissue adhesions
(iii) The testes are responsible for making testosterone, the primary male sex hormone, and for producing sperm. Within the testes are coiled masses of tubes called seminiferous tubules. These tubules are responsible for producing the sperm cells through a process called spermatogenesis
(iv) Typically, you have a vas deferens (also called a sperm duct or a ductus deferens) in each testicle. The job of these ducts is to move sperm away from its storage place in the testicle. The ducts can be affected by scar tissue or infection
(v) Ovaries: Estrogen helps stimulate the growth of the egg follicle. Vagina: In the vagina, estrogen maintains the thickness of the vaginal wall and promotes lubrication. Uterus: Estrogen enhances and maintains the mucous membrane that lines the uterus. It also regulates the flow and thickness of uterine mucus secretions
(vi) The physiological purpose of the hymen is one of the eternal mysteries of women’s bodies. Although it doesn’t seem to have a specific function, it’s thought that hymen tissue remains as a vestige of vaginal development. Embryologically, it tended to keep germs and dirt out of the vagina
Question 4. Write briefly about the following:
(i) Twins may or may not be identical
(ii) Accessory glands
(iii) Semen
(iv) Artificial insemination
Answer :
(i) Sometimes, two eggs are released from the ovaries at a time and both may get fertilised by two different sperms. Such twins are dizygotic and not identical. Sometimes, a single fertilised egg may split during the early stages of cell division. Such twins are monozygotic and are identical.
(ii) The accessory glands of the male reproductive system are the seminal vesicles, prostate gland, and the bulbourethral glands. These glands secrete fluids that enter the urethra
(iii) semen, also called seminal fluid, fluid that is emitted from the male reproductive tract and that contains sperm cells, which are capable of fertilizing the female’s eggs. Semen also contains liquids that combine to form seminal plasma, which helps keep the sperm cells viable.
(iv) Artificial insemination is a fertility treatment method used to deliver sperm directly to the cervix or uterus in the hopes of getting pregnant. Sometimes, these sperm are washed or “prepared” to increase the likelihood a woman will get pregnant.
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