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 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 # 3

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 # 4

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 # 5

What are heat-shock proteins?

Ans 1: Most plants have adopted to survive in heat stress as the plants of temperate regions face the stress of 40°C and above temperature.The cells of these plants synthesize large quantities of special proteins called heat shock proteins.These proteins embrace enzymes and other proteins thus help to prevent denaturation.

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

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 # 8

Why leaves are said to be excretophore?

Ans 1: The falling of yellow leaves in autumn is the seasonal time for the plants to get rid of the accumulated wastes and because of this reason leaves are said to be excretophore.

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

Ans 1: Synthesis function of liver include.
1. Synthesis of urea, ammonia and uric acid. It assists kidney for the removal of wastes.
2. Synthesis of plasma proteins like proteins like prothrombin and fibrinogen. it maintains osmotic balance of blood and help in blood clotting.

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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 are effects of ADH and Aldosterone on work of nephron?

What is renal failure?

Define Homeostasis.

What are heat-shock proteins?

Define anhydrobiosis with an example.

Give two adaptation of plants to high temperature condition.

Why leaves are said to be excretophore?

Give the role of contractile vacuole.

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

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 are effects of ADH and Aldosterone on work of nephron?

What is renal failure?

Define Homeostasis.

What are heat-shock proteins?

Define anhydrobiosis with an example.

Give two adaptation of plants to high temperature condition.

Why leaves are said to be excretophore?

Give the role of contractile vacuole.

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

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

Differentiate between osmoregulation and thermoregulation.

Give the role of contractile vacuole.

Name waste products produced during metabolism of purine and pyrimidine.

Define Excretion.

What is counter-current multiplier.

Differentiate between hydrophytes and mesophytes.

What is renal failure?

Why ammonia is more toxic than other nitrogenous wastes?

Give four adaptation of xerophytes.

Define the process of painting with one example.

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

Why ammonia is more toxic than other nitrogenous wastes?

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

Define Excretion.

What are heterotherms?Give example.

What is lithotripsy?

What is metanephridium?

Write a short note on kidney transplantation.

Described the structure of a flame cell.

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

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

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

What is flame cell Why it is called so?

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

Name two hormones involved in nephron.

Why leaves are said to be excretophore?

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

Name waste products produced during metabolism of purine and pyrimidine.

Differentiate between ureotelic and uricotelic animals.

Differentiate between hydrophytes and mesophytes.

Differentiate between osmoregulation and thermoregulation.

Illustrate the function of Malpighian Tubules.

12th Class Biology Chapter 15 Short Questions

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