1. The part of the alimentary canal that absorbs water is the _______.   colon   caecum   rectum   Hint Half-n-half Clue   2. _______ is a unicellular animal.   Chlamydomonas   Amoeba   Spirogyra   Half-n-half Clue   3. The body of an insect comprises three parts, namely the head, body and tail.   True   False   4. _______ animals live on land.   Arboreal   Terrestrial   Aerial   Half-n-half Clue   5. A long-sighted person can see a distant object but has difficulty in seeing a near object.   False   True   6. The lateral lines of fish are sensitive to the vibrations of water.   False   True   7. Which of the following animals is cold-blooded?   Crocodile   Elephant   Seal   Leopard   Whale   Half-n-half Clue