Control And Coordination

Que 1. Mayank's father never bothered to check the brand/contents of the salt he had purchased from the market. Mayank noticed that her sister had developed swollen neck. The doctor advised her to eat iodised salt. 

(i) Name the disease from which Mayank's sister suffered. 

(ii) Why has the doctor advised her to eat iodised salt? 

(iii) How will this incidence influence Mayank's attitude towards health?

Ans. (i) Goitre/Thyroid related disease. 

(ii) Iodine present in iodised salt is needed to produce thyroxin hormone. 

(iii) Mayank would become more careful regarding health, will be conscious of his diet and of people around him.

Que 2. Rahul got a bike on his 18th birthday from his parents. His father instructed him to always wear helmet while driving. He reluctantly obeys him but does not tie the straps of helmet properly. 

(i) According to you, what danger Rahul can face in future while he is driving his bike. 

(ii) Which vital organ/organs get protection by wearing the helmet while driving the two wheelers? 

(iii) What values are being neglected by Rahul?

Ans. (i) He may get head injury that may even prove fatal to him. 

(ii) Brain, Eye. 

(iii) Obeying traffic rules while travelling on the roads, be careful while driving, obeying instructions by elders.