Advertisements
Advertisements
Question
Give scientific reasons: Mature erythrocytes in humans lack nucleus and mitochondria
Advertisements
Solution
In case of fertilisation of the ovum by a sperm, the corpus luteum persists and continues to secrete progesterone in the body thus maintaining its high levels. The presence of progesterone prevents the maturation of another ovum, thus temporally stopping the menstrual cycle.
APPEARS IN
RELATED QUESTIONS
List two functions ovary of human female reproductive system.
Describe the function of placenta.
What is the scientific name of birth canal?
Draw a labelled diagram of the human female reproductive system. With the help of this diagram, explain the working of human female reproductive system.
In a flower, the parts that produce male and female gametes are respectively :
(a) sepal and anther
(b) filament and stigma
(c) anther and ovary
(d) stamen and style
In humans, the fertilization takes place in:
Explain how the transmission of virus and bacteria diseases be prevented?
Explain how the sex of the child is determined at the time of conception in human beings.
Define the following:
Clone
State the location:
Prostate gland
