Write the main difference between auxins and cytokinin.

How does control and coordination take place in animal body?

Name the source gland and one major effect of each of the following hormones:

(a) Parathormone

(b) Progesterone

Give one example to show how the endocrine system coordinates our body activities.

Few children in your village have complained of swollen necks. More and more children have complained about swollen necks every month. A villager, Hari Singh is superstitious and he thinks that the village is cursed by a ‘devil’. Shyam, another villager, who thinks it as a disease which needs consultation with a doctor.

(a) Do you agree with Hari Singh?

(b) What can be the reason behind swollen necks of the young children in the village? How can the problem be overcome?

(c) What social change is required in the village to make it free form blind faith?

(d) What values are shown by Shyam?