Lakhmir Singh and Manjit Kaur Solutions for Chapter: Reaching the Age of Adolescence, Exercise 5: Questions Based on High Order Thinking Skills (HOTS)

When a human female reaches a certain age, then vaginal bleeding occurs for a few days after regular intervals of time: At what particular event in the life of a human female this process stops temporarily but starts again?

When a human female reaches a certain age, then vaginal bleeding occurs for a few days after regular intervals of time:
What name is given to the event when this process stops permanently?

A woman is in her reproductive phase of life. Even when the sperms are available at the time of release of a mature ovum by her ovary, fertilisation does not take place. Due to this, the woman is unable to bear a baby.
What is the most likely defect in the reproductive system of this woman ?

A woman is in her reproductive phase of life. Even when the sperms are available at the time of release of a mature ovum by her ovary, fertilisation does not take place. Due to this, the woman is unable to bear a baby.

Name the technique by which this woman can also have a baby. (Write the full form.)

Raj Kumar and his wife Sunita have been blessed with a baby girl. On the other hand, Kripa Shanker and his wife Vimla have been blessed with a baby boy. What type of sex chromosome has been contributed :
(a) by Raj Kumar (b) by Sunita (c) by Kirpa Shanker (d) by Vimla

A gland W is located just below the stomach in the human body. The gland W secrets a hormone X. The deficiency of hormone X in the body causes a disease Y in which the blood sugar level of a person rises too much. The person having high blood sugar is called Z. What are W, X, Y and Z?

It was observed that the tadpoles are not growing into adult frogs in a village pond. A scientist who was asked to find the reason for this concluded that the pond water did not contain sufficient amount of a mineral P which could make a hormone Q. The hormone Q can cause a phenomenon R in tadpoles so that they become adult frogs.

What are (i) P (ii) Q, and (iii) R ?

It was observed that the tadpoles are not growing into adult frogs in a village pond. A scientist who was asked to find the reason for this concluded that the pond water did not contain sufficient amount of a mineral P which could make a hormone Q. The hormone Q can cause a phenomenon R in tadpoles so that they become adult frogs.
Name one human disease which can also be caused due to the deficiency of P in food and water. (Anaemia/ Goitre/Scurvy)