BY - SHIVANSHU KASHYAP (M.SC PREVIOUS ) BAREILLY COLLEGE BAREILLY
What is Adaptation ? A change in the structure and function of an organism that result from natural process by which an organism is better fitted to survive and also multiply in an environment is called adaptation.
Mutation Natural Selection What causes Adaptation
Structural :- A feature of an organism’s body that help it to survive/reproduce. Types of Adaptation Physiological :- A body process that helps an organism to survive/reproduce. Behavioural :- Response made by an organism that help it to survive/reproduce.
Bats have webbing that allows them to fly and cover them during night. Camel have large flat feet to spread their weight on the sand , thick fur on the top of the body for shade.
Hydrophis has flattened oarlike tail which allows it to propel themselves through the water more effectively. Mole have short and stout limbs which have strong claws for digging.
Taenia solium has flat body which is ideal for absorbing maximum amount of nutrients because of its surface area to volume ratio.
Physiological Adaptation Internal system Excreatory Adaptation Chemical Release (Venom/ pois -- on,spray ) Homeothermy Low metabolism
The giant african millipede is toxic. It makes a poison that it release through its skin, it keeps it from being a tasty treat for predators.
Animal in the chappral biome naturally have very concentrated urine which mean little to no water is wasted and the liquids can be reabsorbed back into the the body of the animals. This adaptation is demonstrated by most mammal in the chaparral biome where water retainment is crucial for survival.
Camel have red blood cells that are flat,elliptical discs rather than round and , so they can flow even if the camel hasn’t had water for weeks. Snakes make venom to protect themselves and capture prey.
A koala’s low metabolic rate and low energy requirements enable it to obtain sufficient nutrients and water from a diet of only gum leaves. Warm blooded creatures like mammals and birds try to keep the inside of their bodies at a constant temperature . They do this by generating their own heat when they are in a cooler environment and by cooling themselves when they are in a hoter environment.
Behavioural Adaptation Hibernation Migrating Bird call Aestivation Nocturnal Warning system
Fish and other animal travel in groups for protection and to find food. Opossum can roll onto their backs slow their breathing and become still as if dead.
Clown fish seek shelter from predator in sea anemones. Sea anemones are poisonous to other marine creatures. A bear’s body shows down in winter. This helps them survive the long winter temperature and scarce food during winter months.
Some racoons open garbage cans. This behaviour is not natural. It is a learned behaviour . Seasonal or periodic movement of animal in response to changes in climate or food availability or to ensure reproduction. Ex- Geese, Whales, Salmon, Monarch butterflies.
Wood frogs freeze their bodies , this allows them to survive temperatures as low as -80 degrees Fahrenheit and in spring , they thaw out and “ come back to life “. Kangaroo rats survive without ever drinking water. They get all the moisture they need from the seeds that they eat. Antarctic fish have “antifreeze “ proteins in their blood . Some interesting facts :-
African bullfrogs create mucus “homes “ to survive the dry season. Tubeworms turn toxic water into food. Okapi have scent glands on their feet.