Fsc part 2 online preparation for biology chapter 15 (Homeostasis)

Question # 1

What is hypercalcemia? Give its effects.

Ans 1: High level of circulating calcium in the blood is called hypercalcemia.
Hypercalcemia may cause kidney stone.

Question # 2

Differentiate between ureotelic and uricotelic animals.

Ans 1: Ureotelic Animals: Animals which excrete urea are called ureotelic e.g sharks.
Ans 2: Uricotelic Animals: Animals which excrete uric acid are called Uricotelic.e.g Birds, insects.

Question # 3

Define Homeostasis.

Ans 1: The protection of internal environment from the harms of fluctuation in external environment is called homeostasis.The homeostasis keeps the internal fluctuation in a narrow range with various control systems compared to wider external fluctuation. The control system would not let the body flooded with water in abundant supply of water.

Question # 4

Why ammonia is more toxic than other nitrogenous wastes?

Ans 1: Ammonia is very toxic and dissolve quickly in body fluids,Thus it must be kept in low concentration in the body.To maintain low concentration below that of body requires, large volume of water is used to eliminate it as urine.

Question # 5

Name waste products produced during metabolism of purine and pyrimidine.

Ans 1: Waste products of purine and pyrimidine are hypoxanthine, xanthine, uric acid, allantoin, urea and ammonia.

Question # 6

Define anhydrobiosis with an example.

Ans 1: The ability to tolerate dehydration, this process is called anhydrobiosis.For example: Kangaroo Rat a desert animal can tolerate dehydration without drinking water by feeding desert plants containing more carbohydrates, which produce water of metabolism.

Question # 7

What is lithotripsy?

Ans 1: (Litho means stone, tripsy means breakdown) It is the technique used to break up stones that form in the kidney, ureter or gall bladder.It is used for non- surgical removal of kidney stones.

Question # 8

What is metanephridium?

Ans 1: It is the excretory organ of earthworm and other annelids.In each segment of the body metanephridium is present which individually collects the wastes and then remove them.

Question # 9

What is counter-current multiplier.

Ans 1: This mechanism causes gradual osmotic out flow from the filtrate back to kidneys as it passes downward in the descending loop of Henle.Furthermore, ascending loop of henle does not allow out flow of water from its filtrate,instead actively transport sodium ions into kidney interstitium to sustain its high concentration.

Question # 10

Differentiate between hydrophytes and mesophytes.

Ans 1: Hydrophytes: Hydrophytes are the plant which grow in aquatic environment (abundant water),they have large leave surface area and stomata are present on the upper side of leaves, they have high rate of transpiration. E.g., Water lilli, Wolfia, Pistia etc.
Ans 2: Mesophytes: These are the plants which grow on land where moderate water is available: they open their stomata during flooding and close stomata during drought.For Example: rose and mango.

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Fsc part 2 online preparation for biology chapter 15 (Homeostasis)

Online Short Questions For Chapter 1 "12th Class Biology Chapter 15 Short Questions Preparation "

Biology - 12th Class Biology Chapter 15 Short Questions Preparation

What is hypercalcemia? Give its effects.

Differentiate between ureotelic and uricotelic animals.

Define Homeostasis.

Why ammonia is more toxic than other nitrogenous wastes?

Name waste products produced during metabolism of purine and pyrimidine.

Define anhydrobiosis with an example.

What is lithotripsy?

What is metanephridium?

What is counter-current multiplier.

Differentiate between hydrophytes and mesophytes.

Prepare Complete Set Wise Questions For Chapter 1 "12th Class Biology Chapter 15 Short Questions Preparation "

Set 1

Set 2

Set 3

Set 4

12th Class Biology Chapter 15 Short Questions Preparation - Set 1

What is hypercalcemia? Give its effects.

Differentiate between ureotelic and uricotelic animals.

Define Homeostasis.

Why ammonia is more toxic than other nitrogenous wastes?

Name waste products produced during metabolism of purine and pyrimidine.

Define anhydrobiosis with an example.

What is lithotripsy?

What is metanephridium?

What is counter-current multiplier.

Differentiate between hydrophytes and mesophytes.

12th Class Biology Chapter 15 Short Questions Preparation - Set 2

What is vasa recta?

What are juxtamedullary nephrons?

What is metanephridium?

What is counter-current multiplier.

Write four osmoregulatory adaptations in xerophytes.

Write a short note on kidney transplantation.

Give the role of contractile vacuole.

Name waste products produced during metabolism of purine and pyrimidine.

Name two hormones involved in nephron.

What are heat-shock proteins?

12th Class Biology Chapter 15 Short Questions Preparation - Set 3

Name waste products produced during metabolism of purine and pyrimidine.

Differentiate between osmoregulation and thermoregulation.

What is vasa recta?

Define the process of painting with one example.

Define Excretion.

Give two adaptation of plants to high temperature condition.

What are heterotherms?Give example.

What is hemodialysis and peritoneal dialysis?

What is metanephridium?

Name two hormones involved in nephron.

12th Class Biology Chapter 15 Short Questions Preparation - Set 4

Differentiate between hypotonic and hypertonic solution.

Why leaves are said to be excretophore?

Described the structure of a flame cell.

Give two adaptation of plants to high temperature condition.

Define dialysis.Give its types.

What is hemodialysis and peritoneal dialysis?

Define the process of painting with one example.

Give the role of contractile vacuole.

Differentiate between ureotelic and uricotelic animals.

Write structural adaptation for regulation of heat exchange between animals and environment.

12th Class Biology Chapter 15 Short Questions