1. _______ animals live on trees.   Terrestrial   Arboreal   Aerial   Hint Half-n-half Clue   2. The body of an insect comprises three parts, namely the head, body and tail.   True   False   3. The nerve carrying messages from the ear to the brain is the _______ nerve.   auditory   optical   olfactory   Half-n-half Clue   4. Pick the "odd one out" (with reference to crustaceans and molluscs).   Shrimp   Crab   Mussel   Half-n-half Clue   5. Our vision is _______.   monocular   binocular   triocular   Half-n-half Clue   6. The nerve carrying messages from the nose to the brain is the _______ nerve.   gustatory   olfactory   auditory   Half-n-half Clue   7. _______ is a unicellular animal.   Chlamydomonas   Amoeba   Spirogyra   Half-n-half Clue