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

Question # 1

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 # 2

What is vasa recta?

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

Question # 3

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

Ans 1: Aldosterone and ADH help in full conservation of water in proximal convoluted part of the nephron and concerned with maintenance of urine concentration

Question # 4

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 # 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

Give four adaptation of xerophytes.

Ans 1: Xerophytes have following adaptations.
1. Reduced leaves
2. Hidden stomata
3. Thick cuticle
4. Water storing tissues

Question # 7

Define the process of painting with one example.

Ans 1: It is structural adaptation for heat regulation in dogs.Panting is evaporative cooling in the respiratory tract for temperature regulation.

Question # 8

What are heterotherms?Give example.

Ans 1: These are the animals that are capable of varying degrees of endothermic heat production but generally do not regulate their body temperature within a narrow range.For example bats and humming birds.

Question # 9

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 # 10

Write a short note on kidney transplantation.

Ans 1: Dialysis is used temporerily.In high degree renal failure also called uremia or end stage renal disease.The dialysis is replaced by surgical transplantation of kidney of a matching donor kidney is the only option left as the permanent treatment. Kidney Should be of nearest to avoid tissue rejection.

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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

Differentiate between hydrophytes and mesophytes.

What is vasa recta?

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

Define dialysis.Give its types.

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

Give four adaptation of xerophytes.

Define the process of painting with one example.

What are heterotherms?Give example.

Give the role of contractile vacuole.

Write a short note on kidney transplantation.

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

Differentiate between hydrophytes and mesophytes.

What is vasa recta?

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

Define dialysis.Give its types.

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

Give four adaptation of xerophytes.

Define the process of painting with one example.

What are heterotherms?Give example.

Give the role of contractile vacuole.

Write a short note on kidney transplantation.

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

Differentiate between ureotelic and uricotelic animals.

What are heterotherms?Give example.

Give four adaptation of xerophytes.

Name waste products produced during metabolism of purine and pyrimidine.

Why leaves are said to be excretophore?

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

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

What is vasa recta?

What is lithotripsy?

Differentiate between hydrophytes and mesophytes.

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

Write four osmoregulatory adaptations in xerophytes.

What are heterotherms?Give example.

What are heat-shock proteins?

What is vasa recta?

What are Xerophytes?Give its examples.

Write two types of synthesis functions of liver and effects on homeostasis.

Define dialysis.Give its types.

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

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

Differentiate between ureotelic and uricotelic animals.

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

What is flame cell Why it is called so?

What is counter-current multiplier.

Define excretophore./what are excretophores %why?

Differentiate between hypotonic and hypertonic solution.

What are heat-shock proteins?

Differentiate between hydrophytes and mesophytes.

Define Homeostasis.

Differentiate between ureotelic and uricotelic animals.

What are heterotherms?Give example.

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

12th Class Biology Chapter 15 Short Questions

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