(i) 1. The leaves may be covered with thick cuticle.
2. The stomata are sunken in some plants, specially in xerophytes.
3. Some plants contain latex, mucilage, resins etc., tq retain water in the plant body.
(ii) Three germ killing secretions of our body are — tear, saliva and HCl.
(iii) Age restrictipn for marriage for boys is 21 years and for girls it is 18 years.
(iv) Two activities of the Red Cross are :
1. It assists the medical services of a country by providing ambulance services.
2. It provides training for medical and para medical staff for dealing with war and natural calamities.