1. What’s the solution ?

Kabir wants to be a professor of zoology. What can he do today to prepare for that ? 

Ans:

In order to be a professor of zoology, Kabir should have an interest in science subjects. Kabir should gather information from different magazines, books, and pictorial encyclopedias. He should study regularly and sincerely. He should read various books on animals.

2. Use your brain power !

(a) What skills do we already have before we learn to ride a bicycle?

Ans: Before riding a bicycle, we learned to walk, run, jump, climb, skip, and hop. Hence, we are able to climb and sit on the bicycle and balance it by touching the ground with our legs.

(b) Suman wishes to run a restaurant of her own in the future. Which of the skills she is learning today will be of use in her future occupation? 

Ans: The skills of cooking meals, writing down the recipe, keeping an account of the money spent, making a list of grocery items needed, etc. are some of the few skills that will help her run a restaurant in the future.

3. Answer the following questions.

(a) What is meant by heredity?

Ans: People of one family show similarities in physical characteristics in many ways. Some features or traits are like our grandparents, some like our parents, and some like our brothers and sisters. Being born with certain features or traits in common with the members of our family is called heredity.

(b) What differences do we see between children in pre-primary classes and children in Std V? 

Ans: Preprimary children cannot read or write. They are unable to dress themselves; they are unable to tie their shoelaces, comb their hair, and so on. They are dependent on their mother and teachers for everything. Whereas a Std 5 child can read, write, and dress on his own, he can do most of the routine work independently.

(c) What changes take place in us from birth till adulthood? 

Ans: From birth to adulthood, the following changes take place:

(i) The overall height and weight of the body significantly increase.

(ii) The amount of hair on the head and the body also increases a lot.

(iii) The number of bones decreases from 300 to 206.

(iv) Hormone secretion also increases significantly.

(v) Immunity increases as well.

(vi) The brain gets more developed.

(vii) The sexual reproduction system gets mature enough to take part in sexual reproduction.

(d) Name any three skills you have acquired. 

Ans: The skills that I have acquired are skipping, jumping, reading, writing, cycling etc.

(e) What is meant by physical growth?

Ans: Growing in height and weight from childhood to adulthood is called physical growth.

4. True or false ?

(a) A baby gradually learns to perform newly learnt tasks without making mistakes.

Ans: True

(b) At birth, we already have all skills.

Ans: False

(c) We cannot manage all our tasks entirely by ourselves. 

Ans: True

(d) Our height increases from birth till we grow old.

Ans: False