Complete the worksheet on hereditary and evolution, biology class 10
Answers
When a denser medium is kept between two parallel faces inside a rare medium and a ray falls upon one of the two parallel faces reflects into the denser medium and comes out of another surface becoming parallel to the incident ray.
In the successive reflection the deviation at first surface is reversed at second surface but the emergent ray deviates literally.
The distance to what an emergent Ray devited from the direction of incident ray when suffers refraction at two parallel surfaces is called as lateral deviation/ displacement.
The lateral displacement/deviation increase with the increase in
• thickness
• angle of incident
• optical density
Life Process
Maintenance of living organism is essential even if they are moving, resting or even sleeping.
The processes which together perform the function of maintenance of ‘life’ are called as life processes.
Nutrition, respiration, circulation, excretion are examples of essential life processes.
In unicellular organisms, all these processes are carried out by that single cell.
In multicellular organisms, well-developed systems are present to carry out the processes.
Nutrition
The process of acquiring food that is needed for nourishment and sustenance of the organism is called nutrition.
There are two main modes of nutrition, autotrophic and heterotrophic.
Heterotrophic nutrition has subtypes as holozoic, saprophytic and parasitic nutrition.
To know more about Nutrition, visit here.
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