The kapok tree is a flowering plant that grows rapidly to become one of the tallest trees in a tropical rainforest ecosystem. Climbing plants wind up its stem and the tree provides a habitat for insect-eating birds and frogs. Bats feed on the nectar from its flowers and pollinate them so they can produce small, light seeds. Insects feed on its leaves and when the leaves fall to the ground they will come into contact with soil bacteria and fungi. (a) (i) Use the information provided to draw a food chain for this tropical rainforest in the space provided. The chain should contain three organisms. (ii) Suggest and explain ways in which being tall may be helpful for the survival of this tree species. (iii) Explain why the bacteria and fungi found in the rainforest soil are important in this ecosystem. (b) Every year large areas of tropical rainforest are destroyed by burning. A large percentage of the mass of a kapok tree is made of the element carbon.

1. (a)(i)Use the information provided to draw a food chain for this tropical rainforest in the space provided. The chain should contain three organisms.[2]
2. (a)(ii)Suggest and explain ways in which being tall may be helpful for the survival of this tree species.[3]
3. (a)(iii)Explain why the bacteria and fungi found in the rainforest soil are important in this ecosystem.[3]
4. (b)(i)Name one substance, found in plants but not in animals, that contains carbon.[1]
5. (b)(ii)Explain how burning trees contributes to global warming.[2]