IGCSE Biology (0610) — May–June 2025, Paper 41
6 questions · every question answerable online with instant point-by-point AI marking against the official mark scheme.
Start with Question 1 →Fig. 1.1 shows a pyramid of energy for an ecosystem. The energy (in J) at each trophic level is: trophic level 1 = 11212 J; trophic level 2 = 9804 J; trophic level 3 = 822 J;…
Answer this question and get it marked →The human retina contains receptor cells called rods and cones. Fig. 2.1 shows the distribution of receptor cells in a human retina. (Fig. 2.1 plots number of receptors per mm^2…
Answer this question and get it marked →Fig. 3.1 shows one stage involved in plant reproduction after pollination. (Fig. 3.1 is a diagram of a carpel: a pollen grain has landed on the stigma and a structure labelled X…
Answer this question and get it marked →The kidney is an organ in the excretory system. Describe what is meant by the term excretion.
Answer this question and get it marked →Organisms can be classified by their features and by studying the sequence of bases in their DNA. Fig. 5.1 is a diagram showing the evolutionary relationships between some…
Answer this question and get it marked →Some maize seeds were pinned on a board and provided with light from all directions. The board was placed in a clinostat that rotated the board. The board was rotated continuously…
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