Human Reproduction
Trending Questions
Name the smallest and largest cell in the human body?
What are the secondary sexual characteristics in the human male and female respectively ?
Oviduct
Vagina
Uterus
Ovary
Which among the following is not the function of testes at puberty?
Formation of germ cells
Secretion of testosterone
Development of placenta
Secretion of estrogen
List any two changes each in human male and female, which occur during puberty.
Rewrite the terms in the correct order so as to be in a logical sequence.
(a) Implantation, ovulation, child birth, gestation, fertilisation.
(b) Coitus, ovum, sperm, sperm duct, urethra, vagina.
(c) Sperm duct, penis, testes, sperms, semen.
(d) Puberty, menopause, menstruals, menarche, reproductive age.
(e) Graafian follicle, ostium, uterus, fallopian tube.
- Provides a large surface area for glucose and oxygen to pass.
- Provides a large surface area for oxygen to pass.
- Helps to provide signals to brain.
- Waste substances can be removed
What is puberty? [1 MARK]
Question 25
Which among the following is not the function of the testes during puberty?
(i) formation of germ cells
(ii) secretion of testosterone
(iii) development of placenta
(iv) secretion of estrogen
(a) (i) and (ii)
(b) (ii) and (iii)
(c) (iii) and (iv)
(d) (i) and (iv)
The disc-like tissue embedded in the uterine wall which provides nutrition to the embryo within the womb is known as the placenta.
- False
True
How does sexual reproduction result in variation of characters in the offspring
What is the juvenile phase?
What is the purpose of blood spaces surrounding the villi ?
It facilitates transport of nutrients from mother to embryo
It helps to eliminate wastes from embryo’s blood
- It provides space for air flow between the growing embryo and the mother
Placenta requires blood spaces for proper growth of uterus
- Doubling of chromosomes before zygote formation.
- Halving of chromosomes during gamete formation.
- Doubling of chromosomes during gamete formation.
- Halving of chromosomes after gamete formation.
Give a one-word answer:
The place where the embryo develops in the human female.
Question 28
Dramatic changes of body features associated with puberty are mainly due to the secretion of
(a) estrogen from testes and testosterone from the ovary
(b) estrogen from adrenal gland and testosterone from pituitary gland
(c) testosterone from testes and estrogen from the ovary
(d) testosterone from the thyroid gland and estrogen from pituitary gland
Assertion: During fertilization, only the head of spermatozoa enters the egg.
Reason: If several spermatozoa hit the egg at the same time, all can enter the egg.
Both the assertion and the reason are true and the reason is the correct explanation for the assertion.
Both the assertion and the reason are true but the reason is not the correct explanation for the assertion.
The assertion is true but the reason is false.
The assertion is false but the reason is true.
Define gestation.
Why are human females said to be homogametic?
Define the following terms :
(a) Hernia (b) Ovulation (c) Puberty
Give a suitable word for of the following statement.
It marks the beginning of the reproductive period.
Why do most people get acne and pimples on the face during puberty?
Given below is the set of five terms, in given case rewrite the terms in logical sequence as directed at the end of statement.
Implantation, parturition, ovulation, gestation, fertilisation. (Stages leading to formation of fetus and birth)
What is the attachment of embryo to the uterine wall called?
Explain how offspring and parents of organisms reproducing sexually have the same number of chromosomes?
A human gamete has ________ sex chromosome(s).
one
two
half
multiple
- In age group 12-15yr, body shows no more vegetative growth
- Prior to age group [12-15yrs], all resources are focused on general growth of body.
- Hormones are not released in children below 12yr to support sexual maturity.
- There are signs of sexual maturity in that age also, its just that it goes unnoticed.
