What are the functions of the following organs
?
(a) Heart (b) Brain (c) Roots (d) Leaves
Answers
Heart
The heart is a muscular organ about the size of a fist, located just behind and slightly left of the breastbone. The heart pumps blood through the network of arteries and veins called the cardiovascular system.
brain
Brain, the mass of nerve tissue in the anterior end of an organism. The brain integrates sensory information and directs motor responses; in higher vertebrates it is also the centre of learning. The human brain weighs approximately 1.4 kg (3 pounds) and is made up of billions of cells called neurons.
Roots
vascular plants, the roots are the organs of a plant that are modified to provide anchorage for the plant and take in water and nutrients into the plant body, which allows plants to grow taller and faster.
leaves
leaf is part of a plant that's usually green and attached to it by a stem or stalk. In the fall, the leaves of many trees turn various bright colors before falling to the ground. In the spring, trees grow new leaves. ... A plant's leaves are the organs that take part in photosynthesis, which brings it needed nutrients.
Answer:
(a) Heart pumps the blood through out the body
(b) The brain controls our thoughts, memory and speech, movement of the arms and legs, and the function of many organs within our body.
(c) Roots absorb water and minerals and transport them to stems. They also anchor and support a plant, and store food.
(d) The main function of a leaf is to carry out photosynthesis, which provides the plant with the food it needs to survive.