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

Question # 1

Give two adaptation of plants to high temperature condition.

Ans 1: Plants have following adaptations for surviving high temperature.
1. Plant synthesizes heat shock proteins and
2. Plants use evaporative cooling to manage with high temperature.

Question # 2

What is hemodialysis and peritoneal dialysis?

Ans 1: Hemodialysis: mean cleaning of blood. In it blood is circulates through a machine which contains a dialyzer. Dialyzer has two spaces separated by thin membrane. Blood passes through one side of membrane and dialysis fluid from other side. The waste and excess water pass from the blood through the membrane into the dialysing fluid.
Ans 2: Peritoneal dialysis: work on same principle except abdomen has a peritoneal cavity, lined by a thin epithelium called peritoneum. Peritonial cavity is filled with dialysis fluid that enters the body through a catheter. Excess water and wastes pass through the peritoneum into the dialysing fluid.

Question # 3

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 # 4

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 # 5

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 # 6

Give the role of contractile vacuole.

Ans 1: Contractile vacuole play an important tole in osmoregulation in aquatic animals, it absorbs extra water from the cell and excerta it out.For example in paramecium two contractile vacuoles are present, which perform osmoregulatory function.

Question # 7

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 # 8

What is renal failure?

Ans 1: When kidneys perform no more function and cannot filter blood to produce nitrogenous waste, this is called renal failure or uemia.

Question # 9

Write four osmoregulatory adaptations in xerophytes.

Ans 1: They have following adaptations:
1. Sunken stomata
2. Thick cuticle
3. Water storing tissues
4. Reduced or complete absence of leaves.

Question # 10

What is hypertonic environment and what changes occur in a cell in such environment?

Ans 1: The more concentrated external environment is called hypertonic environment. The hypertonic environment makes the cell solution concentrated and cell shrinks due loss of water.

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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

Give two adaptation of plants to high temperature condition.

What is hemodialysis and peritoneal dialysis?

What is hypercalcemia? Give its effects.

What is lithotripsy?

Why ammonia is more toxic than other nitrogenous wastes?

Give the role of contractile vacuole.

Differentiate between ureotelic and uricotelic animals.

What is renal failure?

Write four osmoregulatory adaptations in xerophytes.

What is hypertonic environment and what changes occur in a cell in such environment?

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

Give two adaptation of plants to high temperature condition.

What is hemodialysis and peritoneal dialysis?

What is hypercalcemia? Give its effects.

What is lithotripsy?

Why ammonia is more toxic than other nitrogenous wastes?

Give the role of contractile vacuole.

Differentiate between ureotelic and uricotelic animals.

What is renal failure?

Write four osmoregulatory adaptations in xerophytes.

What is hypertonic environment and what changes occur in a cell in such environment?

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

What are juxtamedullary nephrons?

Define anhydrobiosis with an example.

What is hypercalcemia? Give its effects.

What is flame cell Why it is called so?

Illustrate the function of Malpighian Tubules.

What are Xerophytes?Give its examples.

Differentiate between hydrophytes and mesophytes.

Name two hormones involved in nephron.

What is counter-current multiplier.

Give two adaptation of plants to high temperature condition.

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

What is renal failure?

Differentiate between hypotonic and hypertonic solution.

What is hemodialysis and peritoneal dialysis?

Define Excretion.

Name waste products produced during metabolism of purine and pyrimidine.

What is flame cell Why it is called so?

What is hypertonic environment and what changes occur in a cell in such environment?

Give four adaptation of xerophytes.

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

Define Homeostasis.

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

Write four osmoregulatory adaptations in xerophytes.

What is renal failure?

Give four adaptation of xerophytes.

Define Excretion.

What is hypertonic environment and what changes occur in a cell in such environment?

What is flame cell Why it is called so?

Differentiate between osmoregulation and thermoregulation.

Define excretophore./what are excretophores %why?

Define anhydrobiosis with an example.

What are effects of ADH and Aldosterone on work of nephron?

12th Class Biology Chapter 15 Short Questions

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