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

Question # 1

Define dialysis.Give its types.

Ans 1: When the kidneys of a patient are failed then nitrogenous wastes are removed by filtering blood through dialysis.Dialyzing machine is called artificial kidney machine.
It has two types:
1. Peritoneal dialysis
2. Hemodialysis

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

Differentiate between hypotonic and hypertonic solution.

Ans 1: Hypotonic Solution: Dilutes solution compared to the cell concentration is called hypotonic solution.
Ans 2: Hypertonic Solution: The more concentrated external environment as compared to cell is called hypertonic solution.

Question # 4

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 # 5

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.

Question # 6

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 # 7

What is vasa recta?

Ans 1: In juxtamedullary nephrons additional capillaries extend down to from a loop of vessels called vasa reata.

Question # 8

Give adaptation of marine fish for its survival in cold environment.

Ans 1: These fishes have a thick layer of insulting fat called blubber, which prevent excess heat loss from the body.

Question # 9

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.

Question # 10

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.

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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

Define dialysis.Give its types.

Differentiate between ureotelic and uricotelic animals.

Differentiate between hypotonic and hypertonic solution.

Give the role of contractile vacuole.

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

What is hemodialysis and peritoneal dialysis?

What is vasa recta?

Give adaptation of marine fish for its survival in cold environment.

Differentiate between hydrophytes and mesophytes.

Write four osmoregulatory adaptations in xerophytes.

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

Define dialysis.Give its types.

Differentiate between ureotelic and uricotelic animals.

Differentiate between hypotonic and hypertonic solution.

Give the role of contractile vacuole.

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

What is hemodialysis and peritoneal dialysis?

What is vasa recta?

Give adaptation of marine fish for its survival in cold environment.

Differentiate between hydrophytes and mesophytes.

Write four osmoregulatory adaptations in xerophytes.

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

Differentiate between osmoregulation and thermoregulation.

Give two adaptation of plants to high temperature condition.

Differentiate between hypotonic and hypertonic solution.

Described the structure of a flame cell.

Differentiate between hydrophytes and mesophytes.

Define excretophore./what are excretophores %why?

What are heat-shock proteins?

Define anhydrobiosis with an example.

What are juxtamedullary nephrons?

What is vasa recta?

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

What is vasa recta?

What is renal failure?

Differentiate between osmoregulation and thermoregulation.

What is hemodialysis and peritoneal dialysis?

What are different metabolic wastes in humans?

Define dialysis.Give its types.

Give four adaptation of xerophytes.

Illustrate the function of Malpighian Tubules.

Differentiate between hydrophytes and mesophytes.

Explain briefly glomerular filtrate.

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

Differentiate between hypotonic and hypertonic solution.

What are heterotherms?Give example.

Differentiate between osmoregulation and thermoregulation.

Why ammonia is more toxic than other nitrogenous wastes?

Define Excretion.

What are juxtamedullary nephrons?

Write a short note on kidney transplantation.

What is metanephridium?

What is vasa recta?

What is hemodialysis and peritoneal dialysis?

12th Class Biology Chapter 15 Short Questions

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