OESOPHAGUS STOMACH
ECHINODERMS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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use tools
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may store food in armpit folds
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females invest lots of time in pup
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males groom pup
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Detailed explanation-1: -Physical Characteristics: They have retractile claws on the front feet and a loose flap or pouch of skin under each foreleg which is used to hold food items gathered from the sea bottom. Their molar teeth are flattened and rounded with no cutting cusps. Their hind feet and tail are flattened and both aid in propulsion.
Detailed explanation-2: -Sea otters have the thickest fur of any animal. To keep warm, sea otters spend a large portion of their days grooming and conditioning their fur. This traps air and heat next to their skin.
Detailed explanation-3: -Adult males are readily distinguished by the obvious presence of testes (the male’s scrotum does not become clearly evident until he is at least one year old). However, gender is more difficult to determine in adult females that have not lactated, or in cubs and juveniles of both sexes.
Detailed explanation-4: -By rubbing their flippers and forepaws simultaneously, sea otters increase the efficiency of a grooming session.