Blood transports substances like

• Digested food

• Oxygen

• Waste for removal

• All of these

Answer explanation

The correct answer is 'All of these'. This is because blood circulates throughout the body, carrying digested food from the digestive system to other parts of the body. It also transports oxygen from the lungs to the body's cells, and carries waste for removal from the body.

How many blood vesels are there

• 3

• 2

• 5

• 1

Answer explanation

The human body has two major types of blood vessels: arteries and veins. Therefore, the correct answer to the question about the number of blood vessels is 2.

The Fluid part of the blood is called as

• Veins

• Arteries

• Plasma

• Vines

Answer explanation

Plasma is a yellowish fluid that holds the blood cells in whole blood in suspension. It makes up about 55% of the body's total blood volume. It's not the veins or arteries, which are types of blood vessels, or 'vines', which is not related to the context.

Blood of Arterie ___________ from the heart.

• goes far away

• comes near

• both (a) and (b)

• none of these

Answer explanation

The correct answer is that it 'goes far away' from the heart. This is because the function of arteries is to transport oxygenated blood from the heart to the rest of the body.

Blood of Veins ________ to the heart.

• goes far away

• comes

• Both (a) and (b)

• none of these

Answer explanation

The veins are responsible for carrying deoxygenated blood back to the heart, so the blood in the veins 'comes' to the heart and not goes far away. Thus, the correct option is 'comes'.

What is the full form of RBC ?

• Ribs Blood Cells

• Red Blue Cells

• Right Body Cells

• Red Blood Cells

Red blood cells contains a pigment called _________ which make RBC appear red.

• ribs

• chemical

• haemoglobin

• None of these

Answer explanation

The correct answer is haemoglobin, a protein that carries oxygen throughout the body. The presence of haemoglobin makes red blood cells appear red. The other options, ribs and chemical, are not pigments and hence, are incorrect.

Red blood cells contains a pigment called _________ which make RBC appear red.

• ribs

• chemical

• haemoglobin

• None of these

Answer explanation

The correct answer is haemoglobin. Haemoglobin is an iron-containing protein in red blood cells that binds to oxygen and gives red blood cells their characteristic color.

Tags

NGSS.HS-LS1-7

Arteries carry blood rich in _________.

• carbon dioxide

• oxygen

• air

• nitrogen

Answer explanation

The correct choice is 'oxygen'. This is because arteries, in general, are responsible for carrying oxygenated blood from the heart to the rest of the body, excluding the pulmonary artery. Thus, the blood they carry is rich in oxygen, not carbon dioxide, air, or nitrogen.

Veins carry blood rich in ____________.

• nitrogen

• air

• oxygen

• carbon dioxide

Answer explanation

The correct answer is carbon dioxide. This is because, in the circulatory system, veins carry deoxygenated blood from various parts of the body back to the heart, which is rich in carbon dioxide as a result of cellular metabolism.