Life Processes

Question
CBSEENSC10011709

What are outside raw materials used for by an organism?

Solution

An organism needs raw materials from outside are mainly.

(a) Food: Usually carbon based compounds to supply energy, materials like minerals, vitamins etc. for working and maintenance of cells/tissues.
(b) Water: To provide medium in the body to live and carry out all the metabolic reactions necessary for life.
(c) Oxygen: For respiration.

Question
CBSEENSC10011710

What processes would you consider essential for maintaining life?

Solution

Processes essential for maintaining life are:
(i) Nutrition (ii) Respiration
(iii) Transportation (iv) Excretion.

Question
CBSEENSC10011711

From where do you get the energy to do work from?

Solution

We get energy to do work from the food we eat.

Question
CBSEENSC10011712

Name the main modes of nutrition.

Solution

The main modes of nutition are:
Autotrophic and Heterotrophic.