Which of the following is correct about identical twins?
They are developed from the joining of sperms with two separate egg cells.
Their features are identical to their parents.
They have identical thumbprints.
The nuclei of their cells contain identical genes.
Genetic information from the father is transferred via the
Ovum
Prostate
Seminal vesicle
Sperm
When is jelly deposited as a cover on the egg of frog?
In water, after fertilization.
In water, during fertilization.
In water, before fertilization.
In the ovary.
Which of the following is an oviparous animal?
Blue whale.
Cat.
Rabbit.
Crow.
The given figure illustrates human female reproductive system.
In which region are sperms released during intercourse and where does the fusion of sperm and egg usually take place?
Sperm released- I ; Fusion of egg and sperm- III
Sperm released- III ; Fusion of egg and sperm- IV
Sperm released- IV ; Fusion of egg and sperm- II
Sperm released- II ; Fusion of egg and sperm- I
Which of the following is incorrect about Dolly, the clone?
It was cloned by lan Wilmut and his colleagues.
During the process of its cloning, the cell was collected from the udder of a female Finnish Dorset Sheep.
It had a natural death.
It was given birth by a Scottish black face ewe.
Which of these are changes which occur during puberty in a boy?
I. Voice breaks
II. Hips become wider
III. Shoulders become wider
IV. Menstruations starts
I and II only
I and III only
II and III only
III and IV only
Which one of the following events is correctly matched with the time period of the normal menstrual cycle?
Release of ovum- 5th day.
Endometrium regenerates 5-10 days.
Endometrium secretes nutrients for implantation- 11- 18 days.
Rise in progesterone level 1 -15 days.
Which of the following is not a part of sperm?
Tail.
Head.
Cilia
Middle piece
The sex determining system in which males are XY and females are XX is found in which of the following groups?
Frogs.