Biology 9-1 0970: Plant Nutrition Topical Past Paper Questions

(a) Fig. 6.1 is a diagram of a spongy mesophyll cell. Fig. 6.1 (i) State the name of the organ that contains spongy mesophyll cells. [1] (ii) State the names of structures J, K and L in Fig. 6.1. J ..... K ..... L ..... [3] (iii) Describe one function of the nucleus. [1] (iv) Dra…

(a) A student investigated the effect of carbon dioxide concentration on the rate of photosynthesis in leaf discs. As photosynthesis takes place, the leaf discs start to float. Sodium hydrogencarbonate is used as a source of carbon dioxide. The student used this method: - Take 5…

(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…