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The World of Animals. By NG CHAP FAI. There is a large variety of animals in our world!. To help identify and study animals, biologists have invented systems to sort them into groups. Can you give some names of these groups?.
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The World of Animals By NG CHAP FAI
There is a large variety of animals in our world! • To help identify and study animals, biologists have invented systems to sort them into groups. • Can you give some names of these groups?
Animals are divided into groups according to the most important features.
Animals Invertebrate Vertebrate Animals are divided into two major groups.
Butterfly Jellyfish Invertebrates • are animals withoutbackbones. • examples:
Anaemone shrimp Sea anaemone Sea cucumber Spider More examples ……
Coral Nudibranch Cockroach More examples ……
Vertebrates • are animals with backbone. • are divided into five groups. • Fish • Amphibian • Reptile • Bird • Mammal
Fishes • are covered with wet scales. • have gills for gaseous exchange. • have fins for swimming. • are cold-blooded. • are aquatic animals.
Lion fish Sea horse Great white shark Examples of Fishes:
Frog Toad Amphibians • have moist, scaleless skin. • are cold-blooded. • Examples:
Lizard Snake Reptiles • have hard, dry, scaly skin. • use lung to breathe. • are cold-blooded. • Examples:
Crocodile Tortoise More examples……
Birds • have feathers. • have wings for flying. • have beaks for feeding. • are warm-blooded. • lay eggs with shells.
Hummer bird Peacock Ostrich Eagle More examples……..
Whale Mammals • have mammary glands. • have hair on the skin. • have diaphragm. • are warm-blooded. • Examples:
Horse Chinese white dolphin Giraffe Koala More examples……..
Seals Zebras Lion Dog More examples……..
Rhino Monkeys Pig Human More examples……
Animals Invertebrates Vertebrates Fishes Amphibians Reptiles Birds Mammals Summary
Quiz (2) (1989 CE) The diagram below show a variety of animals: E (mosquito) A (frog) B (fish) C (bat) D (whale) F (penguin) • All the animals shown except E can be classified into one group. State the structural feature on which this classification is based. (1) ii. Two of the five animals mentioned in (i) above belong to the same group as the rabbit. Name this group and the two animals. (2)
E (mosquito) A (frog) B (fish) C (bat) D (whale) F (penguin) iii. With reference to the animals shown, name the respiratory structures that can be found in (1) animal A only. (2) animal B only. (2) *iv. Sometimes D is stranded on a beach, out of the water. Its respiratory structures cannot then function properly. Explain why this is so. (2)
Answer of Quiz (2) • Possession of a backbone/vertebral column (1) ii.Mammal (1) C (bat) and D (Whale) (1 or 0) iii. (1) A -- Skin (1) (2) B -- Gills (1) *iv. No buoyancy of water to support its body weight (1) therefore lungs cannot expand properly. (1)
Resources on INTERNET • Invertebrate: Invertebrates Zoology Laboratory (http://www-ms.cc.ntu.edu.tw/~chenjh/) • Vertebrate: • Fishes • Fish and more… (http://tknet.tku.edu.tw/~u7051103/fishinstrctr/index.htm) • Amphibians • 小圭的蛙站 (http://move.to/frog) • Reptiles • 爬蟲@香港 (http://herp.uhome.net/main_c.htm) • Birds • Hong Kong Bird Watching Society (http://www.hkbws.org.hk/)
Mammals • 水藍色的天堂 (http://m3.easyspace.com/blueheave1/image/index.html) • Taiwan Monkey Park (http://210.65.15.69/) • Hong Kong Society for Panda Conservation (http://www.hkpanda.org/) • Other useful websites: • Agriculture Fisheries and Conservation Department (http://www.info.gov.hk/afcd/) • Biology link (http://rds.ed.gov.hk/dr/links/educational/biology/index.htm) END