In an investigation, a student collected two plants A and B. Plant A had hairy leaves and epidermis. Leaves of plant B

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5. In an investigation, a student collected two plants A and B. Plant A had hairy leaves and epidermis. Leaves of plant B a) (i) Plant A: Hairy epidermis b) (ii) Plant B: Smooth epidermis (assuming it is the contrasting type, as no specific information is provided for Plant B's epidermis)

6. An investigation was carried out between 1964 and 1973 to study the changes of fish population in a certain small lake. Four species of fish A, B, C and D were found to live in this lake. In 1965 a factory was built near the lake and was found to discharge hot water