Advertisements
Advertisements
Question
A zygote is formed by the fusion of a male gamete and a female gamete. The number of chromosomes in the zygote of a human is ______.
Options
23
44
46
92
Solution
A zygote is formed by the fusion of a male gamete and a female gamete. The number of chromosomes in the zygote of a human is 46.
APPEARS IN
RELATED QUESTIONS
What is placenta?
State its functions in case of a pregnant human female.
What is the main difference between sperms and eggs of humans? Write the importance of this difference.
the Biological/technical term for The canal through which the testes descend into the scrotum just before the birth of a male baby
What is the name of the narrow opening between the uterus and the vagina.
X and Y are two human beings. The organ A in the reproductive system of X releases a mature gamete B once a month which goes into a tube-like structure C through a funnel-like opening. The organ D in the reproductive system of Y makes and releases gametes E which pass through a duct F and are introduced by an organ of Y, into the body of X. B and E fuse together in C to form a new cell G. The cell G divides repeatedly to form a ball of cells H which gets embedded in the lining of organ I of reproductive system of X where it grows and develops into a baby.
(a) Name (i) organ A, and (ii) gamete B.
(b) Write two names of tube-like structure C.
(c) Name (i) organ D, and (ii) gamete E.
(d) Write two names of duct F.
(e) Name (i) cell G (ii) ball of cells H, and (iii) organ I.
(f) Out of X and Y, which one is (i) male, and (ii) female?
Given below is a diagram of two systems together in the human body.
 |
- Name the systems.
- Name the parts numbered 1-10.
- Describe the functions of the parts 3, 4, 5 & 6.
- What will happen if the part 3 on both sides gets blocked?
“Gender of child is determined by the male partner of couple”. Draw a diagram explaining the above statement.
Answer the following question.
What is contraception? List three advantages of adopting contraceptive measures.
Define the four stages in the uterine cycle.
