Human heart

• The right auricle opens into the right ventricle and the left auricle into the left ventricle.
• Aorta carries blood to different parts of the body.
• Pulmonary artery takes blood to the lungs for oxygenation.
• Right auricle gets blood from all parts of the body through veins.
• This blood is pumped into the right ventricle.
• Pulmonary vein brings back oxygen–rich blood from the lungs and pours
• Valves separate each of the chambers so there is no mixing of blood.
• They allow blood to flow only in one direction.
• Left auricle has thinner walls. It pumps blood into the left ventricle.
• Right ventricle pumps blood into the pulmonary artery that takes the blood to the lungs for oxygenation.
• Left ventricle has thicker walls. It pumps blood to the farthest part of the body through the Aorta.
• An artery carries oxygenated blood and vein carries deoxygenated blood. But the pulmonary artery carries deoxygenated blood and the pulmonary vein carries oxygenated blood.

Transport in Plants:

• There are three different kinds of plants, i.e., herbs, shrubs, and trees.
• Plants need to transport water from the roots to the leaves.
• Then the food manufactured in the leaves needs to be transported to different parts of the plant.
• Though the complexity may vary, essentially the mode of transport in all the three types of plants is the same.

     Xylem         Phloem

• A tissue called xylem act as pipelines, and takes water and minerals from the root up the stem to the leaves.
• Absorption of water and minerals is a continuous process.
• Water is being continuously lost from the leaves by the process of transpiration.
• This creates a low pressure and a pulling force results which pulls up the water and minerals.
• In this way, water and minerals are transported to different parts of the plant body.
• Food in plants is manufactured by the leaves.
• Once the food is prepared, it needs to be sent to all parts of the plant body.
• The process by which this takes place is called translocation.
• Special types of tissues called phloem act as pipelines, and carry the prepared food to all parts of the plant body.