Define nutrition.

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Nutrition is the process by which food is consumed by organisms, converted into energy and the nutrients are used from the food.

Organisms use nutrients for their life processes through the process of nutrition.
Nutrients provide energy and biomolecules to organisms for necessary functions.
The main nutrients are carbohydrates, protein, fat, vitamins, minerals, and roughage.
The mode of nutrition varies from one organism to another.

Types of Nutrition

The 2 main modes of nutrition are –

Autotrophic Nutrition

In the autotrophic mode of nutrition, organisms make use of simple inorganic matter like water and carbon dioxide in the presence of chlorophyll and light in order to synthesize food on their own.

Heterotrophic Nutrition

All organisms can not produce food on their own, they depend on others for nutrition. These organisms are known as heterotrophs, and the mode of nutrition through which they acquire food is called heterotrophic nutrition.

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Read the following passage and answer the questions that follow:
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Define nutrition.

Types of Nutrition

CBSE CLASS XII Related Questions

1.
Name the phenomenon that leads to situations like ‘XO’ abnormality in humans. Also name this genetic disorder. How are individuals with an XO chromosomal abnormality affected? Write its symptoms as well as karyotype.

3.
Oogenesis is a discontinuous process that begins before birth and is completed after puberty.
Trace the development of a gamete mother cell till its release from the ovary during ovulation.
Name the two pituitary hormones that play an important role in the process.

5.
Draw a neat diagram of a maize grain showing the internal structure and label any five parts.

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Define nutrition.

Types of Nutrition

CBSE CLASS XII Related Questions

1.Name the phenomenon that leads to situations like ‘XO’ abnormality in humans. Also name this genetic disorder. How are individuals with an XO chromosomal abnormality affected? Write its symptoms as well as karyotype.

3.Oogenesis is a discontinuous process that begins before birth and is completed after puberty. Trace the development of a gamete mother cell till its release from the ovary during ovulation. Name the two pituitary hormones that play an important role in the process.

5.Draw a neat diagram of a maize grain showing the internal structure and label any five parts.

Comments

SUBSCRIBE TO OUR NEWS LETTER

1.
Name the phenomenon that leads to situations like ‘XO’ abnormality in humans. Also name this genetic disorder. How are individuals with an XO chromosomal abnormality affected? Write its symptoms as well as karyotype.

3.
Oogenesis is a discontinuous process that begins before birth and is completed after puberty.
Trace the development of a gamete mother cell till its release from the ovary during ovulation.
Name the two pituitary hormones that play an important role in the process.

5.
Draw a neat diagram of a maize grain showing the internal structure and label any five parts.