10 questions from ACSJ 2024. Real examination questions for PSLE 2027/2028 preparation.
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The Dugong is a large marine mammal that belongs to the same mammalian order as manatees. The species are sometimes called 'sea cows' and are thought to have evolved from an (1) ansester related to elephants. Found in the Indo-West Pacific region, Dugongs are (2) beleeved to have spawned mermaid legends after sailors spotted them at sea and (3) mistake identified them as half-fish or half-human creatures. The dugong has a streamlined body with a rounded head, (4) resembles manatees. The dull brownish-grey skin is thick, smooth and (5) sparcely covered with hair. Its mouth is on the underside, facing downwards, and there are stiff bristles on the upper lip. They pull up the seagrass with their thick, flexible lips and shake the leaves to remove any sand and (6) daybree before swallowing. Dugongs have been (7) sight mainly in the Johor Straits off the northeastem coast of mainland Singapore. Crocodiles and sharks are the natural predators of Dugongs, but humans are their primary threat. As a result of land (8) reclaim and water pollution, beds of seagrass, their main source (9) in food, have been destroyed. As they feed in shallow waters, they are often injured by the propellers of passing motorboats. They also get (10) entenghled in submerged fishing nets and drown.
Dugong are hunted for their thick layer of blubber. (11) Hunt is one of the leading causes of their (12) deemice. Their meat is said to taste like buffalo meat and their skin can be used to make leather or glue.
Adapted from: Dugong - Singapore Infopedia