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Genetic Variations. 7.11 ( B) explain variation within a population or species by comparing external features, behaviors, or physiology of organisms that enhance their survival such as migration, hibernation, or storage of food in a bulb ;. What is an Adaptation sm ?.
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Genetic Variations 7.11 (B) explain variation within a population or species by comparing external features, behaviors, or physiology of organisms that enhance their survival such as migration, hibernation, or storage of food in a bulb;
What is an Adaptationsm? • An alteration or adjustment in structure or habits, often hereditary, by which a species or individual improves its condition in relationship to its environment to be able to survive.
Types of Adaptation • Anything that helps an organism survive in its environment is an adaptation. • It also refers to the ability of living things to adjust to different conditions within their environments. • Structural adaptation • Protective coloration • Mimicry • Behaviour adaptations • Migration • Hibernation
Structural adaptations • A structural adaptation involves some part of an animal's and plant’s body.
Plants • The adaptations shown in this figure allegedly developed over millions of years as plants had to acquire new features to be able to survive on land. • Superficially, similarities between the algae and plant are shown, but the information required to produce the new structures and their functions cannot be explained within the evolutionary framework. • Each of these groups was created with the features and information they need to survive in the conditions in which they live.
Gills in fish • little organs allow the fish to absorb oxygen from the water and use it for energy. • Most fish have 4 gills on each side
Flight • flight has endowed birds with many physical features in addition to wings and feathers. • light weight=Hollow bones • Respiratory system • Reproductive system • Muscular system
Protective Coloration Camouflague • Coloration and protective resemblance allow an animal to blend into its environment. • Another word for this might be camouflage. Their camouflage makes it hard for enemies to single out individuals.
Camouflagebp • Have you ever wondered why animals have spots, strips, or certain colors? • Sometimes an animal’s colors can be a difference between life and death. • Animals use their colors to blend into the environment. • What is this called?
Adaptations • Camouflage is a type of animal adaptation which a species resembles its surroundings
Mimicry • Mimicry allows one animal to look, sound, or act like another animal to fool predators into thinking it is poisonous or dangerous.
Behaviour adaptations • Behaviour adaptations include activities that help an animal survive. • Behaviour adaptations can be learned or instinctive. • Social behaviour • Behaviour for protection
Migration • Animals migrate for different reasons. • better climate • better food • safe place to live • safe place to raise young • go back to the place they were born. • This is when behavioral adaptation that involves an animal or group of animals moving from one region to another and then back again.
This is deep sleep in which animal’s body temp droops, body activities are slowed to conserve energy. E.g. Bats, woodchucks & bears. Hibernation
Some Animals Hibernate • Hibernation is when an animal goes through the winter into a long, deep sleep. • One way animals can adapt to the changing environment is by hibernating. Some animals hibernate for part or all of the winter. The animal's body temperature drops, and its heartbeat and breathing slow down. It uses very little energy. In the fall, these animals get ready for winter by eating extra food and storing it as body fat. They use this fat for energy while hibernating. Some also store food like nuts or acorns to eat later in the winter. Bears, skunks, chipmunks, and some bats hibernate. Insects look for winter shelter in holes in the ground, under the bark of trees, deep inside rotting logs or in any small crack they can find.
Some Animals Estivate • Estivate is when an animal sleeps during the summer. • What causes an animal to estivate? HEAT • Ground squirrels in the desert will estivate in their burrows to get out of the heat. • Some toads estivate to escape the hot, dry summer. • Many amphibians and reptiles estivate, as do some insects, snails, and fish.
Some plants storage food in bulbs • bulb is a short stem with fleshy leaves or leaf bases that function as food storage organs during dormancy (hibernation). • leaves, but contain food reserves to enable the plant to survive adverse conditions.
Review • Game ecokids • Study jams • 10 adaptations
