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Evaluation · Q10

Q.Find out the correctly matched pair.

a) Rubber – Shorea robusta
b) Dye – Indigofera annecta
c) Timber – Cyperus papyrus
d) Pulp – Hevea brasiliensis
Tamil Nadu DgeTextbookSubjectiveImportance★★★★★
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Step 1. Checking each pair against the chapter's own category assignments: Rubber comes from Hevea brasiliensis (not Shorea robusta, a timber tree not covered as rubber anywhere in the chapter), so option (a) is wrong.

Step 2. Timber is illustrated in the chapter by Teak, Rosewood and Ebony — not Cyperus papyrus, which the chapter instead associates with the origin of the word 'papyrus' for paper-making — so option (c) is wrong. Pulp wood is made from species like Melia azadirachta, Casuarina and Eucalyptus, not Hevea brasiliensis (which is the rubber tree), so option (d) is also wrong. …

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