Biology Ch 1 Class 12 Homeostasis





Entry test MDCAT contains most of the Biology MCQs. FSC Part 1 bio book MCQs. HSSC Biology questions MCQs. Solved Chapterwise Biology MCQs for first-year 11 class MCQs. Second-year and first-year bio textbooks chapter-wise MCQs with the answer are provided here. PakLearningSpot PLS MCQs Bank website for FREE Entry test preparations

PLS Boost Bundle

Get Access to 20 thousands+ MCQs Including Topical MCQs, Practice Tests, Mock Tests, Solved Past Papers, Flashcards, Notes, FLPS, and Much More.

In plants which of the following is a waste product produced both during photosynthesis and respiration

1/65

Terrestrial animals like kangaroo rat survive even without drinking water since

2/65

The condition of a stable internal environment in an organism is:

NTS 2015 SMBBMC
Biology
Homeostasis
Elimination Tool:

3/65

Ammonia is chief excretory product in:

NUMS 2014
Biology
Homeostasis
Elimination Tool:

4/65

In a hot summer after noon, if your body’s Homeostatic machinery keep your internal temperature quite lower than that of external than this is an example of

5/65

The disease in which patients passed urine that rapidly turned black on exposure to air is called:

NTS 2011
Biology
Homeostasis
Elimination Tool:

6/65

High level of _____ and _____ in the blood and the contributing factors in the formation of kidney stones.

NUMS 2018
Biology
Homeostasis
Elimination Tool:

7/65

Ureter open into the urinary bladder through:

NUMS 2018
Biology
Homeostasis
Elimination Tool:

8/65

The only possible treatment in end stage renal failure is:

NUMS 2018
Biology
Homeostasis
Elimination Tool:

9/65

Which of the following reduces the rate of transpiration by adaptations in xerophytes?

NUMS 2019 Cancelled
Biology
Homeostasis
Elimination Tool:

10/65

The active uptake of sodium in the ascending limb or thick loop of Henle is promoted by the action of:

PMC 2020
Biology
Homeostasis
Elimination Tool:

11/65

Which of the following occurs in the body in response to the secretion of Glucagon?

NUMS 2020
Biology
Homeostasis
Elimination Tool:

12/65

Which of the following types of transpiration account for 5 – 7 % of total transpiration that take place in plants?

NUMS 2019 Cancelled
Biology
Homeostasis
Elimination Tool:

13/65

Which of the following fish drink large amount of sea water and excrete concentrated urine resulting in maximum salt excretion and minimal water loss?

14/65

The mechanism by which substances are removed from the blood and are directly added to the tubular fluids is called:

NUMS 2018
Biology
Homeostasis
Elimination Tool:

15/65

Urine leaves the kidney through a duct called:

NUMS 2020
Biology
Homeostasis
Elimination Tool:

16/65

Reabsorption of calcium is triggered by:

NUMS 2019 Reconduct
Biology
Homeostasis
Elimination Tool:

17/65

Purine and pyrimidine catabolism results in production of

18/65

Which of the following structure in plant’s body is called excretophores?

19/65

The characteristic which enable animals to tolerate dehydration is called

20/65

Humans maintain their body temperature within a narrow limit due to their _____ characteristics.

NUMS 2019 Cancelled
Biology
Homeostasis
Elimination Tool:

21/65

The site and principal mechanism for the passage of glucose into the bloodstream in the human kidney is the:

NTS 2014
Biology
Homeostasis
Elimination Tool:

22/65

Which one of the following group of animals is homeothermic?

NUMS 2014
Biology
Homeostasis
Elimination Tool:

23/65

Capillaries present around the loop of Henle:

NUMS 2018
Biology
Homeostasis
Elimination Tool:

24/65

________ are animals that do not adjust their internal osmolality and are isotonic with their environment.

NUMS 2019 Cancelled
Biology
Homeostasis
Elimination Tool:

25/65

In humans, the temperature regulation control center is located in:

PMC 2020
Biology
Homeostasis
Elimination Tool:

26/65

Which hormone prepares the body for situations of stress and emergency?

NUMS 2014
Biology
Homeostasis
Elimination Tool:

27/65

Which of the following marine fishes are considered direct descendents of fresh water ancestors?

28/65

In osmosis water molecules move from area of _______ to _______ through semipermeable memberane

29/65

Negative feedback mechanism is the characteristic of which class?

NUMS 2020
Biology
Homeostasis
Elimination Tool:

30/65

The water content of mammalian blood is regulated by antidiuretic hormone(ADH). In which part of the nephron does regulation occur ?

NTS 2015 SMBBMC
Biology
Homeostasis
Elimination Tool:

31/65

Deamination in the liver initially produces:

NTS 2010
Biology
Homeostasis
Elimination Tool:

32/65

The mechanism of regulation, generally between organism and its environment, of solutes and the gain and the loss of water is called

33/65

Which of the following fishes excrete large volume of diluted urine?

34/65

The major portion of (NH)2CO is secreted by:

NUMS 2018
Biology
Homeostasis
Elimination Tool:

35/65

Which of the following substances helps to concentrate urine?

NUMS 2020
Biology
Homeostasis
Elimination Tool:

36/65

Thick, waxy & leathery cuticle around leaves is present in

37/65

Urine formation is the result of:

NTS 2015 SMBBMC
Biology
Homeostasis
Elimination Tool:

38/65

Marine fish can keep their internal environment hypertonic with respect to the surrounding salty water by retaining.

39/65

As an excretory organ, liver:

PMC 2020
Biology
Homeostasis
Elimination Tool:

40/65

Which one is not a nitrogen waste?

NUMS 2018
Biology
Homeostasis
Elimination Tool:

41/65

The human body maintains all of its cells’ internal concentration _____ to internal body fluid.

NUMS 2019 Cancelled
Biology
Homeostasis
Elimination Tool:

42/65

Malpighian tubules are involved in excretion in:

NTS 2011
Biology
Homeostasis
Elimination Tool:

43/65

In comparison to a constantly changing external environment, _____ is when the body maintains the internal processes to work in a narrow range of internal fluctuations.

NUMS 2019 Reconduct
Biology
Homeostasis
Elimination Tool:

44/65

Which organ is called the body thermostat?

NUMS 2020
Biology
Homeostasis
Elimination Tool:

45/65

Rose is an example of

46/65

Excretory system, consisting of protonephridia tubes, are present in phylum:

NUMS 2020
Biology
Homeostasis
Elimination Tool:

47/65

In animals excess of nitrogen is excreted primarily in form of

48/65

The excretory product that requires minimum water for its elimination compared to others is:

NUMS 2017
Biology
Homeostasis
Elimination Tool:

49/65

Which of the following statement about conifers is correct?

50/65

Which of the following statement about Homeostasis is incorrect

51/65

Right kidney is slightly lower than left kidney due to:

NUMS 2018
Biology
Homeostasis
Elimination Tool:

52/65

Most of the marine invertebrates are

53/65

Glomerulus in kidneys is made up of:

NUMS 2019 Reconduct
Biology
Homeostasis
Elimination Tool:

54/65

When the temperature of the surrounding environment rises, body responds by:

PMC 2020
Biology
Homeostasis
Elimination Tool:

55/65

The technique used for the non-surgical removal of kidney stones is called:

NUMS 2016
Biology
Homeostasis
Elimination Tool:

56/65

Humans are:

NUMS 2016
Biology
Homeostasis
Elimination Tool:

57/65

When a frog is kept in water for some time it sheds a thin covering of skin called ____

NUMS 2014
Biology
Homeostasis
Elimination Tool:

58/65

Which excretory product in produced in plants during autotrophic mode of life?

59/65

Sphincter muscle in urinary system present near the junction of:

NUMS 2019 Reconduct
Biology
Homeostasis
Elimination Tool:

60/65

The excretion of hypertonic urine in humans is associated best with the:

PMC 2020
Biology
Homeostasis
Elimination Tool:

61/65

Which part of the brain regulates body temperature?

NTS 2016 SMBBMC
Biology
Homeostasis
Elimination Tool:

62/65

In a marine environment, the ion secreted by the kidney is:

NUMS 2020
Biology
Homeostasis
Elimination Tool:

63/65

Sunken stomata are found in:

NUMS 2014
Biology
Homeostasis
Elimination Tool:

64/65

The concentration of Na ions in the body fluids is controlled by the ____ hormone.

NTS 2012
Biology
Homeostasis
Elimination Tool:

65/65
,

Protected

Open chat
Salam
Can we help you?