Life Processes Test

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Life Processes Test - 79

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Weekly Quiz Competition

Question 1
1 / -0

Tunica externa is composed of ___________.

A
Endothelium

B
Connective fibres

C
Smooth muscles

D
Glycoproteins
Question 2
1 / -0

The given diagram shows a potato plant forming new tubers. Which route would be taken by most of the food at this time?

A
$$1 \rightarrow 4 \rightarrow 2 \rightarrow 3$$

B
$$6 \rightarrow 5 \rightarrow 2 \rightarrow 3$$

C
$$1 \rightarrow 4 \rightarrow 5 \rightarrow 6$$

D
$$6 \rightarrow 5 \rightarrow 4 \rightarrow 1$$
Solution
- The food is processed in the leaves through which it first travels to the main stem and then is distributed in other parts of the plant.
- The food reserves are transported to the new tuber maximally and not to the old tubers since old tubers contain adequate food storage. And the brands focus on transferring the food to the newly developing tubers.
So the correct option is option B.
Question 3
1 / -0

Which of the following is correct about human heart?

A
Size of both Atria > Size of both the ventricles

B
Size of both ventricles > Size of both the atria

C
Size of both Atria = Size of both the ventricles

D
Ventricles are the upper chambers and atria are the lower chambers in human heart.

Solution

Humans have a four-chambered heart. The upper two chambers are known as atria and the lower two chambers are known as ventricles. Ventricles are the larger chambers with thick muscular walls as they pump blood out of the heart.
Hence, the correct option is 'B'.
Question 4
1 / -0

What is the nature of blood passing through blood vessels A, B, C and D respectively?

A
A - Deoxygenated, B - Oxygenated, C - Deoxygenated, D - Oxygenated

B
A - Deoxygenated, B - Deoxygenated, C - Oxygenated, D - Oxygenated

C
A - Oxygenated, B - Oxygenated, C - Deoxygenated, D - Deoxygenated

D
A - Oxygenated, B - Deoxygenated, C - Oxygenated, D - Deoxygenated

Solution

A. It represents the veins through which deoxygenated blood from the body is brought to the heart.
B. It represents the aorta or arterial network through which oxygenated blood is pumped to the body parts.
C. It represents the pulmonary artery that carries deoxygenated blood to the lungs to be oxidized.
D. It represents the pulmonary vein that carries oxygenated blood to the heart.
Thus, the correct answer is A.
Question 5
1 / -0

Minerals salts are translocated through _______.

A
Xylem

B
Phloem

C
Water tube

D
Both A and B

Solution

The mineral salts present in the soil get absorbed into the plants with the help of roots and are then translocated upwards through the xylem along with the water.
Question 6
1 / -0

A drop of each of the following, is placed separately on four slides. Which of them will not coagulate?

A
Blood serum

B
Blood from pulmonary artery

C
Whole blood from pulmonary vein

D
Blood plasma
Solution
Correct Option: A
Explanation:
The process through which blood transforms from a liquid to a gel-like state is known as coagulation.
Because blood plasma contains clotting agents and fibrinogen protein, it will coagulate.
The serum will not coagulate because it lacks clotting factors and fibrinogen.
Lymph is more similar to blood plasma in that it includes clotting proteins and will coagulate.
The component of blood that does not include a blood cell or a clotting factor is known as blood serum. All proteins not involved in blood clotting (coagulation), as well as electrolytes, antibodies, antigens, hormones, and any foreign chemicals, are found in serum (e.g., drugs and microorganisms).
Hence, blood serum will not coagulate.
Question 7
1 / -0

Which of the following is not the function of large intestine?

A
Absorption of water

B
Nutrient absorption

C
Secretion of mucus to lubricate faeces

D
Temporary storage faeces in rectum
Solution
The 4 major functions of the large intestine are:
Re-absorption of water and mineral ions such as sodium and chloride.
Formation and temporary storage of faeces.
Maintaining a resident population of over 500 species of bacteria.
Bacterial fermentation of indigestible materials.
So, the correct answer is "Nutrient absorption".
Question 8
1 / -0

The given figure shows diagrammatic representation of exchange of gases at the alveolus and the body tissues with blood and transport of oxygen and carbon dioxide. Identify the blood vessels A to D.

A
A- Systemic vein, B- Pulmonary artery, C- Pulmonary vein, D- Systemic artery

B
A- Systemic artery, B- Pulmonary artery, C- Pulmonary vein, D- Systemic vein

C
A- Pulmonary artery, B- Systemic vein, C- Pulmonary vein, D- Systemic artery

D
A- Systemic vein, B- Pulmonary vein, C- Pulmonary artery, D- Systemic artery
Solution
In the given figure depicting the exchange of gases at the alveolus and the body tissues with blood and transport of oxygen and carbon dioxide.
The unidentified parts in the given diagram are as follows: A-Systemic vein, B- Pulmonary artery, C- Pulmonary vein, and D- Systemic artery.
So, the correct answer is option A.
Question 9
1 / -0

Consider the following statements regarding blood pressure:
1. It is the pressure exerted by the blood on the walls of any vessel.
2. It decreases in the arteries as the distance from the heart increases.
3. It is lower in the capillaries than in the arteries.
4. It is usually lower in women than in men.
Choose the correct statements.

A
1, 2 and 3 are correct

B
2, 3 and 4 are correct

C
1 and 4 are correct

D
1, 2, 3 and 4 are correct
Solution
1. Blood pressure (BP) is the pressure of circulating blood on the walls of blood vessels.
2. In arteries near to heart is larger than the distant ones as pushing by heart decreases.
3. It is lower in the capillaries than in the arteries because the velocity of flow is increased with the decrease in diameter and vice versa.
4. . It is usually lower in women than in men as men have more hypertension than women.
So the correct option is '1, 2, 3 and 4 are correct'.
Question 10
1 / -0

All veins carry deoxygenated blood except

A
Pulmonary vein

B
Hepatic vein

C
Hepatic portal vein

D
Renal vein

Solution

Arteries carry oxygenated blood away from the heart to the tissues, except for pulmonary arteries, which carry blood to the lungs for oxygenation. Similarly, usually veins carry deoxygenated blood to the heart but the pulmonary veins carry oxygenated blood.
Thus, the correct answer is 'Pulmonary vein.'

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Re-Attempt Weekly Quiz Competition

Life Processes Test - 79

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Life Processes Test - 79

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SHARING IS CARING

Question 1

Endothelium

Connective fibres

Smooth muscles

Glycoproteins

Question 2

$$1 \rightarrow 4 \rightarrow 2 \rightarrow 3$$

$$6 \rightarrow 5 \rightarrow 2 \rightarrow 3$$

$$1 \rightarrow 4 \rightarrow 5 \rightarrow 6$$

$$6 \rightarrow 5 \rightarrow 4 \rightarrow 1$$

Solution

Question 3

Size of both Atria > Size of both the ventricles

Size of both ventricles > Size of both the atria

Size of both Atria = Size of both the ventricles

Ventricles are the upper chambers and atria are the lower chambers in human heart.

Solution

Question 4

A - Deoxygenated, B - Oxygenated, C - Deoxygenated, D - Oxygenated

A - Deoxygenated, B - Deoxygenated, C - Oxygenated, D - Oxygenated

A - Oxygenated, B - Oxygenated, C - Deoxygenated, D - Deoxygenated

A - Oxygenated, B - Deoxygenated, C - Oxygenated, D - Deoxygenated

Solution

Question 5

Xylem

Phloem

Water tube

Both A and B

Solution

Question 6

Blood serum

Blood from pulmonary artery

Whole blood from pulmonary vein

Blood plasma

Solution

Question 7

Absorption of water

Nutrient absorption

Secretion of mucus to lubricate faeces

Temporary storage faeces in rectum

Solution

Question 8

A- Systemic vein, B- Pulmonary artery, C- Pulmonary vein, D- Systemic artery

A- Systemic artery, B- Pulmonary artery, C- Pulmonary vein, D- Systemic vein

A- Pulmonary artery, B- Systemic vein, C- Pulmonary vein, D- Systemic artery

A- Systemic vein, B- Pulmonary vein, C- Pulmonary artery, D- Systemic artery

Solution

Question 9

1, 2 and 3 are correct

2, 3 and 4 are correct

1 and 4 are correct

1, 2, 3 and 4 are correct

Solution

Question 10

Pulmonary vein

Hepatic vein

Hepatic portal vein

Renal vein

Solution

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