answer this type of question in 30 -40 words
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Answer:
1.
The taking in of air rich in oxygen into the body during breathing is called 'inhalation' and giving out (or expelling) the air rich in carbon dioxide is called 'exhalation'. Both, inhalation and exhalation take place regularly during breathing.
2.A Breath is one inhalation and one exhalation. The number of times a person breathe during a minute is called his breathing rate. The breathing rate depends on need of oxygen. Which in turn depend on need of energy.
3.Blood is a specialized body fluid. It has four main components: plasma, red blood cells, white blood cells, and platelets. Blood has many different functions, including:
transporting oxygen and nutrients to the lungs and tissues
forming blood clots to prevent excess blood loss
carrying cells and antibodies that fight infection
bringing waste products to the kidneys and liver, which filter and clean the blood
regulating body temperature
5.There are two forms of reproduction: asexual and sexual. In asexual reproduction, an organism can reproduce without the involvement of another organism. Asexual reproduction is not limited to single-celled organisms.
6.The process of transfer of pollen grains from male anther of a flower to female stigma of same flower or another flower is called pollination. Basically there are two kinds of pollination. These are self pollination and cross pollination
7. The mechanism in which all plants containing seeds are involved in the transport of seeds from their parent plant to justify the germination and survival of some of the seeds to adult plants is called seed dispersal.The most common methods are wind, water, animals, explosion and fire. Dandelion seeds float away in the wind.