Transportation in Animals and Plants class 7 | worksheet

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Transportation in Animals and Plants class 7 | worksheet

Transportation in Animals and Plants class 7. Download Transportation in Animals and Plants class 7 worksheet pdf based on the latest syllabus including MCQ questions, long questions, Human excretory system diagram based questions, define, give reason, and more.

Points to remember

Blood is the fluid which flows in blood vessels. It transports substances like digested food from the small intestine to the other parts of the body. It carries oxygen from the lungs to the cells of the body. It also transports waste for removal from the body.

One type of cells are the red blood cells (RBC) which contain a red pigment called haemoglobin. Haemoglobin binds with oxygen and transports it to all the parts of the body and ultimately to all the cells. The presence of haemoglobin makes blood appear red. The blood also has white blood cells (WBC) which fight against germs that may enter our body. The clot is formed because of the presence of another type of cells in the blood, called platelets.

Blood vessels

There are different types of blood vessels in the body two types of blood vessels, arteries and veins are present in the body. Arteries carry oxygen-rich blood from the heart to all parts of the body since the blood flow is rapid and at high pressure, the arteries have thick elastic walls.

Veins are the vessels that carry carbon dioxide-rich blood from all parts of the body back to the heart. The veins have thin walls. There are valves present in veins that allow blood to flow only towards the heart.

A doctor uses the stethoscope as a device to amplify the sound of the heart.

The process of removal of wastes produced in the cells of the living organisms is called excretion. The parts involved in excretion form the excretory system.

Transport of water and minerals

Plants absorb water and minerals by the roots. The roots have root hair The root hair increase the surface area of the root for the absorption of water and mineral nutrients dissolved in water. The root hair is in contact with the water present between the soil particles Plants have pipe-like vessels to transport water and nutrients from the soil. The vessels are made of special cells, forming vascular tissue. A tissue is a group of cells that perform a specialised function in an organism. The vascular tissue for the transport of water and nutrients in the plant is called the xylem leaves synthesise food. The food has to be transported to all parts of the plant. This is done by the vascular tissue called the phloem Thus, xylem and phloem transport substances in plants.


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