Consider the following statements about the circulatory system: 1. It consists only of the heart and no other structures. 2. In humans, blood flows through arteries and veins. 3. The heart acts as a pumping organ. Which of the statements given above is/are correct?

Correct Option The correct option is (c). Explanation The circulatory system is the body's transport network, responsible for delivering oxygen, nutrients, and hormones to cells while removing metabolic waste products. It functions through the coordinated action of a pumping organ, a fluid medium, and a network of vessels. Statement-wise Analysis - Statement 1 is Incorrect: The circulatory system does not consist only of the heart. It is a composite system that includes the heart, blood vessels (arteries, veins, and capillaries), and the blood itself. - Statement 2 is Correct: Humans possess a closed circulatory system. Blood is confined within blood vessels and flows through arteries (which carry blood away from the heart) and veins (which carry blood back to the heart). - Statement 3 is Correct: The heart is a muscular organ that functions as a pump. Through rhythmic contractions, it generates the necessary pressure to propel blood through the vascular network to various parts of the body. Key Takeaway: The human circulatory system is a closed system comprising the heart (pumping organ), blood vessels (arteries, veins, capillaries), and blood, which facilitates transport throughout the body.

NCERT Class 7 Science — Chapter 3: Transportation in animals and plants

mcqeasy

Consider the following statements about the circulatory system:

It consists only of the heart and no other structures.
In humans, blood flows through arteries and veins.
The heart acts as a pumping organ.

Which of the statements given above is/are correct?

Official previous-year question

Verified 1 Aug 2026.

Options

A1 and 2 only
B2 only
C2 and 3 only
D1, 2 and 3

Did you get this right?

Solution

Correct Option

The correct option is (c).

Explanation

The circulatory system is the body's transport network, responsible for delivering oxygen, nutrients, and hormones to cells while removing metabolic waste products. It functions through the coordinated action of a pumping organ, a fluid medium, and a network of vessels.

Statement-wise Analysis

Statement 1 is Incorrect: The circulatory system does not consist only of the heart. It is a composite system that includes the heart, blood vessels (arteries, veins, and capillaries), and the blood itself.
Statement 2 is Correct: Humans possess a closed circulatory system. Blood is confined within blood vessels and flows through arteries (which carry blood away from the heart) and veins (which carry blood back to the heart).
Statement 3 is Correct: The heart is a muscular organ that functions as a pump. Through rhythmic contractions, it generates the necessary pressure to propel blood through the vascular network to various parts of the body.

Key Takeaway: The human circulatory system is a closed system comprising the heart (pumping organ), blood vessels (arteries, veins, capillaries), and blood, which facilitates transport throughout the body.

Your note

More from Chapter 3: Transportation in animals and plants

With reference to the composition of blood in humans, consider the following statements: 1. Plasma is the fluid component of blood in which different types of cells are suspended. 2. The red colour of blood is due to a pigment dissolved directly in the plasma. 3. White blood cells (WBC) are responsible for fighting against germs that may enter the body. Which of the statements given above is/are correct?

medium

Which one of the following best explains the primary function of haemoglobin in the blood?

easy

Consider the following statements regarding the clotting of blood: 1. A clot is formed to plug a cut and stop bleeding. 2. The formation of a clot is primarily due to the presence of white blood cells. Which of the statements given above is/are correct?

easy

With reference to blood vessels in the human body, consider the following statements: 1. Arteries always carry carbon dioxide-rich blood from the heart. 2. Veins generally carry carbon dioxide-rich blood from the body to the heart. 3. Arteries have thick elastic walls while veins have thinner walls. Which of the statements given above is/are correct?

medium

With reference to the Pulmonary Artery, consider the following statements: 1. It carries oxygen-rich blood from the lungs to the heart. 2. It is called an artery because it carries blood away from the heart. 3. It carries oxygenated blood to the kidneys. Which of the statements given above is/are correct?

hard

Keep practising Chapter 3: Transportation in animals and plants

Work through every question from this NCERT chapter.

Browse all NCERT Class 7 Science chapters

Correct Option

The correct option is (c).

Explanation

Statement-wise Analysis

Statement 1 is Incorrect: The circulatory system does not consist only of the heart. It is a composite system that includes the heart, blood vessels (arteries, veins, and capillaries), and the blood itself.
Statement 2 is Correct: Humans possess a closed circulatory system. Blood is confined within blood vessels and flows through arteries (which carry blood away from the heart) and veins (which carry blood back to the heart).
Statement 3 is Correct: The heart is a muscular organ that functions as a pump. Through rhythmic contractions, it generates the necessary pressure to propel blood through the vascular network to various parts of the body.