Answer:
3.)A person shivering when their body temperature is low.
7.)Ants moving within their mounds depending upon the time of day
1-A plant bending toward a light source.
.-Iguanas laying in the sunlight if their body temperature is low.
.-A unicellular organism beating microscopic hairs to escape a chemical pollutant in its environment
.-Birds migrating when seasons change.
The maintenance of relatively constant internal environment of an organism is called Homeostasis.It is an automatic regulations of the body systems and organs controlled by the brain and some receptors, specific for certain body fluctuations.E.g Thermoreceptors Chemoreceptors etc.
The fluctuations in the body internal systems must be controlled within a narrow limits, for existence of living organism.The brain receives inputs from the receptors, and the outputs from the brain ensures the homeostatic control.
The above examples are typical homeostatic responses by the organisms involved, because the inputs from the receptors send signals to the brain ,and the organisms responded to these with the example above.
Explanation:
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Answer:
The body of a fish is streamlined because, it increase the speed of the fish in the water. The more the streamlined shapes more easier for the fish to swim in the water.
Answer: They would be better able to survive in dry environment like deserts than animals with shorter loops.
Explanation:
The kidney is an organ found in animal that is used for the excretion of unwanted nitrogenous substances such as urea and other ammonium compounds from the blood. They also maintain the osmotic pressure of the blood by controlling the excretion of water and salts.
The urinary tubule is the functional unit of the kidney. This tubule is made up of:
--> Bowman's capsule
--> proximal convoluted tubule
--> loop of Henle
--> distal convoluted tubule and
--> collecting ducts.
The ability of the kidney to form a urine that is more concentrated than plasma is essential for survival of mammals that live on land including humans. When there is short supply of water, desert environment, the kidney forms a concentrated urine by continuing to excrete solutes while increasing water reabsorption and decreasing the volume of urine formed. The requirements for excreting a concentrated urine depends on the anatomical arrangement of the loop of Henle. A LONGER loop of Henle provides more osmotic gradient necessary for water reabsorption to occur than a shorter one there by limiting the need for water intake.
