Test: Transportation in Animals & Plants - Class 7 MCQ

• The excretory system in humans consists of important parts like kidneys, ureters, bladder, and urethra.
• These organs work together to remove waste from our bodies.
• When we eat and our body uses food for energy, waste products are produced.
• These wastes need to be removed so our body stays healthy.
• The kidneys act like filters to clean our blood, removing waste products and making urine.
• The urine travels from the kidneys through tubes called ureters into the bladder where it is stored until we go to the bathroom.
• Finally, the urine leaves our body through a tube called the urethra.
• So, the statement is True because the excretory system in humans indeed includes the kidneys, ureters, bladder, and urethra.

The xylem and the phloem make up the vascular tissue of a plant and transports water, sugars, and other important substances around a plant. One xylem and one phloem are known as a 'vascular bundle' and most plants have multiple vascular bundles running the length of their leaves, stems, and roots.

No, animals such as sponges and Hydra do not have blood flowing in their bodies. They live in water, which brings them food and oxygen, and takes away waste and carbon dioxide. So, these animals do not need blood like we do.

Red blood cells (RBCs) are responsible for transport of oxygen to different parts of the body due to presence of haemoglobin in it.

White blood cells are part of the immune system and play a crucial role in defending the body against infections. They actively engage in combating and eliminating germs that may enter the body.

Plants have a special system called xylem vessels that act like pipes to carry water and nutrients from the soil to all parts of the plant. Just like how pipes carry water in our homes, xylem vessels in plants transport water to help them grow big and strong.

During transpiration, the excess of water absorbed by the roots of plants get evaporated through stomata.

Arteries are like highways in our body that carry blood pumped by our heart. They are like roads that deliver oxygen and nutrients to different parts of our body. So, the statement is True because arteries carry oxygen-rich blood from the heart to all parts of the body.

Excretion is the process of removing waste products produced by cells in living organisms. It helps the body get rid of harmful substances that need to be eliminated to stay healthy.