Give two examples each of the following:
(a) Plants having unisexual flowers
(b) Agents of pollination
© Physical changes that are common to both boys and girls.
(a) Papaya, watermelon
(b)Wind, water, air, insects.
©(i) Increase in height and weight (Body becomes larger)
(ii) Thinner hair appears on legs, arms as well as on the face.
(iii) Skin becomes oily and pimples develop.