Reaching The Age of Adolescence

Reaching the age of adolescence Worksheet-4

Multiple-Choice Question:

11. Name the chemical substance secreted by endocrine gland.

(A) Enzymes                                  (B) Neurotransmitter

(C) Hormones                               (D) Protein

12. Which of these is a male sex hormone?

(A) Growth hormone                   (B) Insulin

Reaching the age of adolescence Worksheet-5

Multiple Responses:

1. Select the changes occur during puberty-

(A) Formation of chromosomes

(B) Change in body shape

(C) Development of primary sexual characters

(D) Determination sex

(E) Increase in height

2. What are the possible reasons of sudden increase in height in adolescent?

(A) Genes inherited from parents

Reaching the age of adolescence Worksheet-6

Comprehension Based Questions:

Paragraph:

          Inside the fertilized egg or zygote is the instruction for determining the sex of the baby. This instruction is present in the thread-like structures, called chromosomes. All human beings have 23 pairs of chromosomes in the nuclei of their cells. Two chromosomes out of these are the sex chromosomes, named X and Y. A female has two X chromosomes, while a male has one X and one Y chromosome. The belief that the mother is responsible for the sex of her baby is completely wrong and to blame her for this is totally unjustified.

          The caterpillar has to pass through various stages to become an adult moth.