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Transcript of Diversity
Some live on , some live in the , some can spend part of their life on both and
Give birth to their young
Attract their partners
(most of the male birds have more attractive feathers than female birds)
Why do animals have different body covering?
In order to survive,
move about freely
the place they live in
shelter themselves from weather changes/dangers
find food/water easily
EXAMPLE: RAT, RABBIT
EXAMPLE: ZEBRA, GIRAFFE, SHEEP, GOAT
live in different places, different needs
Where are they?
Rabbits and rats dig and live in
underground burrows or holes for protection.
Herbivores like giraffe and goat live on grassland
so that they can find their food and water easily.
Large meat-eating animals like lions and bats live in natural caves are usually partially or totally blind.
Trees provide shelter from the weather and enemies.
Trees also provides food in the form of fruits, nuts, leaves, bark, and roots.
Freshwater fish are found in shallow wetlands, lakes and rivers, where the salinity of water is less than 0.05 percent.
Saltwater fish lives in water with high concentration of salt like coral reefs, salt ponds, mangroves, seagrass beds and the deep sea.
Lioness find caves to give birth to her cubs in the cave in order to protect their young ones from the rest of the lions. The lioness keeps shifting her cubs from one cave to another to avoid attention from other cub predators like leopards and hyenas.
Animals like lions live in caves for a purpose.
BOTH LAND AND WATER
Amphibian/Semi-aquatic animals have large lungs, allowing them to spend a large majority of their lives on the water, while still being able to traverse on land if need be.
HOW DO WE CLASSIFY ANIMALS?
BY THEIR BODY COVERINGS!
Make them look
Thick layers of hair protects animals in cold climate like polar bear from cold.
Whereas animals that live in hot climate like camel, have thin layers of hair.
Fishes and reptiles have hard scales to protect the species.
Shells also act as shelter and protection from danger for soft bodies species like turtle and lobster.
Some of the male species like chicken and peacocks,
are more physically attractive to attract mating partners.
Other than birds with feathers, bats
(the only flying mammal) have wings to fly too.
Some animals have the ability to mimic their environment in order to hide or hunt like chameleon and octopus by changing the colour and texture of their bodies.
Some animals can still camouflage without mimicking. Because they are born with bodies that make them blend into their environment. For example, snails and stonefish.
Do you know some of the animals do not have body coverings?
Only found on birds
Only found on Mammals
Most of the fish have scales on their bodies. (Unlike some fishes like catfish)
Some reptiles have scales. For example, snakes and crocodiles.
Feed on mother's milk
However, two exceptions are platypus and spiny anteater, which lay eggs
Carnivores, Herbivores, Omnivores
Has beak without teeth, a pair of wings and fly
The only mammal that has a pair of wings and can fly is bat.
Lay eggs, that are protected by shells
In nest to keep them warm by sitting on them
All birds have wings but not all birds can fly
Ostrich, Emu, Penguin, Kiwi
Some birds have webbed feet (Eg. Duck, pelican)
Usually these birds can swim
Jellyfish is an exception, they do not have scales.
Has scales on bodies
Must lives in water, , or
However, some fishes like snakehead and mudskipper are able to stay out of water for a few hours up to a few days without dying
Have streamlined bodies to swim easily in water
Some fishes has flattened bodies like stingray and flounder
Have gills to breathe
Have fins to swim
Usually stay at the bottom of the water
Most fishes lay eggs
Some fishes give birth to their young such as guppy and molly.
HEAD - A pair of feelers/antennae to smell and touch
Body divided into three parts - Head, Thorax, Abdomen
Instead of bones, they have exoskeleton
Give insect its shape and protects its soft body
Some insects have -
Most insects lay eggs
Some insects, like aphids can reproduce both by laying eggs and giving birth to their young depending on the environmental conditons
THORAX - six legs and wings
ABDOMEN - contains the insect's digestive tract and reproductive organs
pair of wings (Eg. housefly, mosquito)
pair of wings (Eg. bee, butterfly)
wings (Eg. termite, ant)
Have scales (dry skin)
Do not have ears, only ear holes
Located at the side of their head behind its eye
Midway down between the eye and the corner of the mouth (Eg. snake)
Has hair on their bodies