S.4 Biology Holiday Work: Three Practice Tests (2020)

This Senior Four Biology holiday package was prepared by a school biology department in 2020, during the COVID-19 school closures. It has three tests, and learners must answer every question. The questions cover photosynthesis experiments and starch testing in leaves, tissue respiration, and lactic acid levels in an athlete, which learners plot on a graph. Other questions deal with digestion and absorption, soil fertility and drainage, endocrine glands, and the tapeworm as a parasite. Learners also study the kidney and excretion, pollination and seed formation, and gaseous exchange in amphibians. The last questions cover body temperature control, haemolysis of red blood cells, diffusion and osmosis, growth in seedlings, and tropic responses in plants. It suits revision at home before national examinations.