Biology 9-1 0970: Organisms and Their Environment Topical Past Paper Questions

(a) Fig. 3.1 is a photograph of a necklace starfish, Fromia monilis. Fig. 3.1 (i) Draw a large diagram of the necklace starfish shown in Fig. 3.1. (ii) Line PQ in Fig. 3.1 represents the diameter of the necklace starfish. Measure the length of line PQ in Fig. 3.1. length of line…

(a) The flow chart in Fig. 6.1 [5] shows one pathway of nitrogen as it travels through the nitrogen cycle. Complete the flow chart in Fig. 6.1. Fig. 6.1 (b) State the names of two processes that occur in both the carbon and nitrogen cycles. [2] (c) State the principal source of e…

(a) Some plants lose their leaves in the winter and grow new leaves in the spring. A scientist measured the total leaf area of the leaves on one grapevine plant. They repeated this on 100 grapevine plants and found the mean total leaf area per plant. This procedure was done every…