Life process questions and answers

 Q.1. Write difference between autotropic and heterotrophic nutrition.

Ans:-

i) Autotropic nutrition -

➡️Living things makes their own food themselves by the help of carbon dioxide and water.

➡️Presence of green pigment (chlorophyll) which is necessary.

➡️Food is prepared in presence of sun light. 

➡️All green plants and some type of bacteria have this type of nutrition. 

ii) Heterotrophic nutrition -

➡️It depends on autotrophs. Food is broken down with the help of enzymes*.

➡️In this nutrition green pigment is not required. 

➡️Organics make their food all times. 

➡️All animals and fungi have this type of nutrition. 

Q.2.Where do plants get each of the raw materials required for photosynthesis?

Ans-

The following raw materials are required for photosynthesis:

➡️The raw material CO2 enters from the atmosphere through stomata.

➡️Water is absorbed from the soil by the plant roots.

➡️Sunlight, an important component to manufacture food, is absorbed by the chlorophyll and other green parts of the plants.

Q.3.What is the role of the acid in our stomach?

Ans-

The hydrochloric acid present in our stomach dissolves bits of food and creates an acidic medium.In this acidic medium, enzyme pepsinogen is converted to pepsin, which is a protein-digesting enzyme.

Q. 4.What is the function of digestive enzymes?

Ans-

Digestive enzymes such as amylase, lipase, pepsin, trypsin, etc. help in the breaking down of complex food particles into simple ones. These simple particles can be easily absorbed by the blood and thus transported to all the cells of the body.

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