The Living World - HS 1st Year || NCERT/AHSEC




THE LIVING WORLD

VERY SHORT ANSWER TYPE QUESTIONS:

Q.1. What does the word 'living' mean?

Ans: By the word 'living' we mean the organism which has life.

Q.2. What is meant by 'life'?

Ans: Life is the name of external manifestation of chemical activities of protoplasm. Life is charecterised by living activities like responding to stimulation and showing other characteristic features as growth, development and evolution.

Q.3. Write 2 characteristics of growth.

Ans: Increase in mass and increase in the number of individual are the important characteristics of growth.

Q.4. How does growth occur in multicellular organism? 
Ans: In multicellular organism growth occurs by cell division.

Q.5. What is a basic difference in growth in plants and animals? 
Ans: In plants, growth by cell division occurs throughout their life span whereas in animals, their growth occurs upto certain age.

Q.6. Define the term 'reproduction'.

Ans.: Reproduction refers to the production of progeny having features similar to those of parents.


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