Biology Ch 1 Class 12 Homeostasis
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In humans, the temperature regulation control center is located in:
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Which of the following statement about conifers is correct?
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Sunken stomata are found in:
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Which organ is called the body thermostat?
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Negative feedback mechanism is the characteristic of which class?
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Right kidney is slightly lower than left kidney due to:
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Reabsorption of calcium is triggered by:
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The water content of mammalian blood is regulated by antidiuretic hormone(ADH). In which part of the nephron does regulation occur ?
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As an excretory organ, liver:
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Urine leaves the kidney through a duct called:
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Which one of the following group of animals is homeothermic?
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Sphincter muscle in urinary system present near the junction of:
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Excretory system, consisting of protonephridia tubes, are present in phylum:
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Rose is an example of
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Which of the following fish drink large amount of sea water and excrete concentrated urine resulting in maximum salt excretion and minimal water loss?
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Which of the following structure in plant’s body is called excretophores?
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The excretion of hypertonic urine in humans is associated best with the:
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The excretory product that requires minimum water for its elimination compared to others is:
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Deamination in the liver initially produces:
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The characteristic which enable animals to tolerate dehydration is called
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The human body maintains all of its cells’ internal concentration _____ to internal body fluid.
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The major portion of (NH)2CO is secreted by:
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Which of the following fishes excrete large volume of diluted urine?
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Which of the following reduces the rate of transpiration by adaptations in xerophytes?
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High level of _____ and _____ in the blood and the contributing factors in the formation of kidney stones.
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In osmosis water molecules move from area of _______ to _______ through semipermeable memberane
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The mechanism of regulation, generally between organism and its environment, of solutes and the gain and the loss of water is called
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The disease in which patients passed urine that rapidly turned black on exposure to air is called:
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Which of the following statement about Homeostasis is incorrect
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Urine formation is the result of:
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The active uptake of sodium in the ascending limb or thick loop of Henle is promoted by the action of:
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In comparison to a constantly changing external environment, _____ is when the body maintains the internal processes to work in a narrow range of internal fluctuations.
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When a frog is kept in water for some time it sheds a thin covering of skin called ____
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Terrestrial animals like kangaroo rat survive even without drinking water since
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Which of the following types of transpiration account for 5 – 7 % of total transpiration that take place in plants?
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Capillaries present around the loop of Henle:
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Purine and pyrimidine catabolism results in production of
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Humans maintain their body temperature within a narrow limit due to their _____ characteristics.
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Thick, waxy & leathery cuticle around leaves is present in
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In a hot summer after noon, if your body’s Homeostatic machinery keep your internal temperature quite lower than that of external than this is an example of
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Which part of the brain regulates body temperature?
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The technique used for the non-surgical removal of kidney stones is called:
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In plants which of the following is a waste product produced both during photosynthesis and respiration
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Which of the following substances helps to concentrate urine?
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Most of the marine invertebrates are
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Malpighian tubules are involved in excretion in:
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Marine fish can keep their internal environment hypertonic with respect to the surrounding salty water by retaining.
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The concentration of Na ions in the body fluids is controlled by the ____ hormone.
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The only possible treatment in end stage renal failure is:
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When the temperature of the surrounding environment rises, body responds by:
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The condition of a stable internal environment in an organism is:
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Which of the following occurs in the body in response to the secretion of Glucagon?
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Ammonia is chief excretory product in:
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Ureter open into the urinary bladder through:
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Glomerulus in kidneys is made up of:
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In animals excess of nitrogen is excreted primarily in form of
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________ are animals that do not adjust their internal osmolality and are isotonic with their environment.
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Which of the following marine fishes are considered direct descendents of fresh water ancestors?
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Which excretory product in produced in plants during autotrophic mode of life?
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Which hormone prepares the body for situations of stress and emergency?
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The mechanism by which substances are removed from the blood and are directly added to the tubular fluids is called:
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Which one is not a nitrogen waste?
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The site and principal mechanism for the passage of glucose into the bloodstream in the human kidney is the:
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In a marine environment, the ion secreted by the kidney is:
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