Life Processes Test

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Life Processes Test - 65

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Weekly Quiz Competition

Question 1
1 / -0

The main function of phloem is translocation of:

A
Food

B
Water

C
Minerals

D
Air

Solution

Phloem is elongated, tubular shaped and thin-walled sieve tube vascular tissue. Its function is the transportation of food and nutrients such as sugar from leaves to other parts of the plant. This movement of substances is called translocation.
Hence, option A is correct.
Question 2
1 / -0

Low platelet count results in

A
Low bleeding

B
Excessive bleeding

C
Growth

D
Both B and C

Solution

Platelets are the parts of the blood that help the blood clot. They are smaller than red or white blood cells. If the number of platelets is too low, excessive bleeding can occur. However, if the number of platelets is too high, blood clots can form thrombosis, which may obstruct blood vessels and result in such events as a stroke.
Therefore, the correct answer is option B.
Question 3
1 / -0

Heart is a ................ pumping organ.

A
Blood

B
Lymph

C
Plasma

D
All of the above
Solution
- In the body, the heart is a muscular organ made up of cardiac muscles, which have four chambers.
- The right side of the heart receives deoxygenated blood from the veins and pumps it to the lungs that oxygenate it.
- The left side of the heart receives oxygenated blood from the lungs and pumps it through the arteries to the whole body.
Thus, the correct answer is option A.
Question 4
1 / -0

How lymph acts as middle man in the body ?

A
It transports food materials, oxygen, hormones etc. to the body cells and brings carbon dioxide and other metabolic wastes from the body cells to blood and then finally pours the same into venous system.

B
It transports metabolic wastes, carbon dioxide, hormones etc. to the body cells and brings oxygen and other food materials from the body cells to blood and then finally pours the same into venous system.

C
It transports metabolic wastes, carbon dioxide, hormones etc. to the body cells and brings oxygen and other food materials from the body cells to blood and then finally pours the same into arterial and capillary system.

D
All of the above

Solution

Lymph acts as middle man which transports food materials, oxygen, hormones etc to the body cells and brings carbon dioxide and other metabolic wastes from the body cells to blood and then finally pours the same into venous system. Also body cells are kept moist by the lymph.
Question 5
1 / -0

Lymph does not contain:

A
Red blood cells

B
Digested fats

C
Haemoglobin

D
Both A and C

Solution

Lymph does not contain red blood cells (RBCs). Haemoglobin is a protein that is found on RBC. So, lymph does not contain haemoglobin. Lymph carries digested and absorbed fats from the small intestine.
Therefore, the correct answer is option D.
Question 6
1 / -0

Cardiac systole is the .......... cardiac muscle in response to an electrochemical stimulus to the heart's cell.

A
Relaxation

B
Contraction

C
Both A and B

D
None of the above

Solution

The diastole phase is the phase of relaxation where the chambers of the heart relax and blood fills into the respective chambers. The systolic phase is the phase of contraction. The normal systolic pressure is about 120 mm Hg & diastole pressure is 80 mm Hg. So, the correct answer is option B.
Question 7
1 / -0

Pressure exerted by blood against its walls of an artery during ventricular contraction is:

A
Diastolic

B
Systolic

C
Cardiac

D
Heart

Solution

The pressure exerted on the arterial wall during left ventricular contraction is called systolic pressure. The pressure exerted on the arterial wall when the heart muscle relaxes and allows the chambers to fill with blood is called diastolic pressure. The normal systolic and diastolic pressure are estimated to be 120 mm Hg and 80 mm Hg respectively.
So, the correct answer is option B.
Question 8
1 / -0

Energy is provided to living beings by the process of?

A
Digestion

B
Respiration

C
Regulation

D
Reproduction

Solution

Respiration is the process in which nutrients are converted into useful energy in a cell. It is responsible for transporting oxygen and carbon dioxide between cells and the external environment.
So the correct answer is option B.
Question 9
1 / -0

The lymph is ....... in nature.

A
Solid

B
Liquid

C
Semi-solid

D
Gas

Solution

Lymph is watery clear fluid or colorless because it lacks red blood cells (erythrocytes). It consists of plasma and white blood cells (leucocytes) only.
So, the correct answer is option B.
Question 10
1 / -0

Which of the following are circulating fluids of the body?

a) Blood b) Hormones c) Lymph

A
a, b

B
b, c

C
a, c

D
All of the above

Solution

All such functions that need transport are performed by the two circulating fluids the blood and the lymph. Beside transport, These fluids has some other functions also.

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Re-Attempt Weekly Quiz Competition

Life Processes Test - 65

Result

Life Processes Test - 65

Score

-

Rank

-

SHARING IS CARING

Question 1

Food

Water

Minerals

Air

Solution

Question 2

Low bleeding

Excessive bleeding

Growth

Both B and C

Solution

Question 3

Blood

Lymph

Plasma

All of the above

Solution

Question 4

It transports food materials, oxygen, hormones etc. to the body cells and brings carbon dioxide and other metabolic wastes from the body cells to blood and then finally pours the same into venous system.

It transports metabolic wastes, carbon dioxide, hormones etc. to the body cells and brings oxygen and other food materials from the body cells to blood and then finally pours the same into venous system.

It transports metabolic wastes, carbon dioxide, hormones etc. to the body cells and brings oxygen and other food materials from the body cells to blood and then finally pours the same into arterial and capillary system.

All of the above

Solution

Question 5

Red blood cells

Digested fats

Haemoglobin

Both A and C

Solution

Question 6

Relaxation

Contraction

Both A and B

None of the above

Solution

Question 7

Diastolic

Systolic

Cardiac

Heart

Solution

Question 8

Digestion

Respiration

Regulation

Reproduction

Solution

Question 9

Solid

Liquid

Semi-solid

Gas

Solution

Question 10

a, b

b, c

a, c

All of the above

Solution

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