Chapter 15 Homeostasis Biology 12th Class Punjab MCQ Tests
12th Class Biology Chapter 15 MCQ Tests
Chapter 15 of 12th Class Biology has 40 questions. If you take an online MCQ test, the system will randomly choose the questions. If you want to take the quiz by chapter then click the start test button.
Total Questions: 40
Total Marks: 40
Time: 40 Mins
Total Questions: 40
Total Marks: 40
Time: 40 Mins
40Min : 00 Sec Remaining
Question # 1
which of the following are biological catalysts which speed up chemical reactions, but remain unchanged themselves.
Question # 2
A dormant state induced by drought in which an organism becomes almost completely dehydrated and reduces its metabolic activity is which one of the following process?
Question # 3
Cockroach has an open circulatory system, and their blood is known as _______.
Question # 4
The behavior to lie in or be exposed to a pleasant warmth is
Question # 5
Sweat glands are used to regulate______ and remove waste by secreting water , sodium salt and nitrogenous wastes.
Question # 6
Nocturnal animals like bush rat, are the animals which are active at _______ and sleep during ______.
Question # 7
Which of the following plants are found in environments when there is rarely a shortage of raw materials such as water and sunlight?
Question # 8
The plumage of birds provides a critical _______ buffer between the animal and its environment.
Question # 9
Plumage fluffing is an example of which one of the following types of adaptations?
Question # 10
The detoxification of chemicals and metabolism of drugs is done by which one of the following organs?
Question # 11
Plant body undergoes stress if the temperature is above_______ degree.
Question # 12
Oxygen rich blood to the kidneys is supplied by:
Question # 13
Considering the nephrons as functional unit of human kidneys, the Bowman's capsule and Glomerulus are two parts of:
Question # 14
The ability of the body or a cell to seek and maintain a condition of equilibrium or stability within its internal environment when dealing with external changes.
Question # 15
A protein named _______ induced in a living cell in response to a rise in temperature above the normal level.
Question # 16
About how many ml water is needed to excrete 1 gram of ammonia?
Question # 17
Flame cells in planaria function in _______.
Question # 18
Which one of the following sequences correctly traces the path of urine after it leaves the kidneys?
Question # 19
What is the name of excretory organ of earthworm?
Question # 20
the sequences of enzyme-catalyzed reactions by which relatively large molecules in living cells are bren down, or degraded.
Question # 21
which are the two parts which make up the protoplasm of a cell.
Question # 22
Bats and hummingbirds are classified as
Question # 23
The normal human body temperature range is typically from:
Question # 24
Plant cells survive sub-freezing temperatures by adjusting:
Question # 25
The_______ produces a polypeptide hormone known as antidiuretic hormone (ADH), which is transported to and released from the posterior pituitary gland.
Question # 26
Trimethylamine oxide is also known as _______ because they maintain osmotic potential.
Question # 27
Which of the following is a helpful aspect of having a fever when sick?
Question # 28
Increase in temperatures, damage metabolism by denaturing:
Question # 29
The metabolic rate _______, when heterotherms act as endotherms.
Question # 30
Hydra has no specialized excretory system because of one of the following reasons:
Question # 31
A tuft of _______ is present in flame cells, which propels waste materials out of the body.
Question # 32
Excretion is the removal of metabolic waste products from the body of an organism. In humans the _______ are the main organ of excretion.
Question # 33
Which one of the following gland is involved in thermoregulation?
Question # 34
The _______ layer in invertebrates in terrestrial environment prevent water loss.
Question # 35
Urea is _______ times less toxic than ammonia.
Question # 36
which of the following is very toxic waste product because it readily dissolves in water present in body fluid.
Question # 37
A fever is considered to be a __________ defense.
Question # 38
Mesophytic environments are marked by following features?
Question # 39
The process by which an organism maintains suitable concentration of solutes and amount of water in the body fluids is known as:
Question # 40
Which of the following structure detects Body temperature and also known as thermostat
Total Questions
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Question # 1
which of the following are biological catalysts which speed up chemical reactions, but remain unchanged themselves.
Question # 2
A dormant state induced by drought in which an organism becomes almost completely dehydrated and reduces its metabolic activity is which one of the following process?
Question # 3
Cockroach has an open circulatory system, and their blood is known as _______.
Question # 4
The behavior to lie in or be exposed to a pleasant warmth is
Question # 5
Sweat glands are used to regulate______ and remove waste by secreting water , sodium salt and nitrogenous wastes.
Question # 6
Nocturnal animals like bush rat, are the animals which are active at _______ and sleep during ______.
Question # 7
Which of the following plants are found in environments when there is rarely a shortage of raw materials such as water and sunlight?
Question # 8
The plumage of birds provides a critical _______ buffer between the animal and its environment.
Question # 9
Plumage fluffing is an example of which one of the following types of adaptations?
Question # 10
The detoxification of chemicals and metabolism of drugs is done by which one of the following organs?
Question # 11
Plant body undergoes stress if the temperature is above_______ degree.
Question # 12
Oxygen rich blood to the kidneys is supplied by:
Question # 13
Considering the nephrons as functional unit of human kidneys, the Bowman's capsule and Glomerulus are two parts of:
Question # 14
The ability of the body or a cell to seek and maintain a condition of equilibrium or stability within its internal environment when dealing with external changes.
Question # 15
A protein named _______ induced in a living cell in response to a rise in temperature above the normal level.
Question # 16
About how many ml water is needed to excrete 1 gram of ammonia?
Question # 17
Flame cells in planaria function in _______.
Question # 18
Which one of the following sequences correctly traces the path of urine after it leaves the kidneys?
Question # 19
What is the name of excretory organ of earthworm?
Question # 20
the sequences of enzyme-catalyzed reactions by which relatively large molecules in living cells are bren down, or degraded.
Question # 21
which are the two parts which make up the protoplasm of a cell.
Question # 22
Bats and hummingbirds are classified as
Question # 23
The normal human body temperature range is typically from:
Question # 24
Plant cells survive sub-freezing temperatures by adjusting:
Question # 25
The_______ produces a polypeptide hormone known as antidiuretic hormone (ADH), which is transported to and released from the posterior pituitary gland.
Question # 26
Trimethylamine oxide is also known as _______ because they maintain osmotic potential.
Question # 27
Which of the following is a helpful aspect of having a fever when sick?
Question # 28
Increase in temperatures, damage metabolism by denaturing:
Question # 29
The metabolic rate _______, when heterotherms act as endotherms.
Question # 30
Hydra has no specialized excretory system because of one of the following reasons:
Question # 31
A tuft of _______ is present in flame cells, which propels waste materials out of the body.
Question # 32
Excretion is the removal of metabolic waste products from the body of an organism. In humans the _______ are the main organ of excretion.
Question # 33
Which one of the following gland is involved in thermoregulation?
Question # 34
The _______ layer in invertebrates in terrestrial environment prevent water loss.
Question # 35
Urea is _______ times less toxic than ammonia.
Question # 36
which of the following is very toxic waste product because it readily dissolves in water present in body fluid.
Question # 37
A fever is considered to be a __________ defense.
Question # 38
Mesophytic environments are marked by following features?
Question # 39
The process by which an organism maintains suitable concentration of solutes and amount of water in the body fluids is known as:
Question # 40
Which of the following structure detects Body temperature and also known as thermostat
Total Questions
12345678910111213141516171819202122232425262728293031323334353637383940
Biology MCQ Test by Topics
- +15.1 Concepts in Homeostasis
- +15.2 Osmoregulation
- +15.2.1 Osmoregulation in Plants
- +15.2.2 Osmoregulation in Animals
- +15.2.3 Osmoregulation in Different Environments
- +15.3 Excretion
- +15.3.1 Nature of Excretory Products in Relation to Habitats
- +15.4 Excretion in Representative Animals
- +15.4.1 Excretion in Hydra
- +15.4.2 Excretion in Planaria
- +15.4.3 Excretion in Earthworm
- +15.4.4 Excretion in Cockroach
- +15.5 Excretion in Vertebrates
- +15.5.1 Excretion in Human
- +15.5.2 Excretory Organs
- +15.5.3 Urinary System
- +15.5.4 Concentration of Excretory Products
- +15.6 Kidney as Osmoregulatory Organ
- +15.6.1 Kidney Problems and Cures
- +15.7 Thermoregulation
- +15.7.1 Adaptations in Plants to Low and High Temperature
- +15.7.2 Mechanisms in Animals Body Heat, Heat Gain and Loss
- +15.7.3 Temperature Classification of Animals
- +15.7.4 Regulation of Heat Exchange between Animals and Environment
- +15.7.5 Thermoregulation in Mammals (Human)
- +15.7.6 Regulatory Strategies
- +15.7.7 Thermostat Function and Feedback Controls in Human
- +15.7.8 Temperature in fever (pyrexia)
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Updated on: 13-05-2026
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