Advertisements
Advertisements
प्रश्न
During adolescence, several changes occur in the human body. Mark one change associated with sexual maturation in boys
पर्याय
loss of milk teeth
increase in height
cracking of voice
weight gain
Advertisements
उत्तर
cracking of voice
Explanation -
During adolescence, boys begin to have new thick hair growth on the face and their voices begin to crack. The skin becomes oily and pimples start appearing. Further, the penis occasionally begins to become enlarged and erect, either in daydreams or at night.
APPEARS IN
संबंधित प्रश्न
With the help of a neat, labelled diagram describe the human male reproductive system.
Identify True/False statement. Correct false statement to make it true.
Spermatozoa get nutrition from Sertoli cells.
Expand the following biological abbreviations: TSH
What happens in a boy’s body under the influence of hormones?
Differentiate between primary and accessory reproductive organs.
Define the following:
Dioceious
With the help of labelled diagramms describe the structures of human sperm and unfertilized ovum.
A couple is unable to conceive. Which modern techniques are available to overcome this problem?
What differences are there in number, structure, and activity of the male and female gametes in a man?
Give Technical Term:
Name the male reproductive cells of mammals.
Write the functional activity of the following structure:
Seminal fluid
In humans, sperm production occurs in the organ ______.
Which hormone controls the secondary sexual characters in males?
Identify the approximate number of lobules present in the testis.
lf vasectomized man attempts to rape, then the presence of which of the following confirms it?
Sertoli cells are regulated by the pituitary hormone known as ______.
Give two reasons for the appearance of variations among the progeny formed by sexual reproduction.
State very briefly the chief function of the following:
Cowper's gland
The canal through which each testis descends into the scrotum just before the birth of a male baby is ______.
Choose the odd one out from the group of terms given below and write the category for the remaining terms:
What is the whitish, viscous fluid secreted by glands along with spermatozoa called?
