Which of the following statements about living and non-living being is/are correct? 1. While living being can demonstrate growth and repair, non-living being cannot. 2. While living being demonstrates metabolic processes, non-living being does not. Select the correct answer using the code given below.
- A.1 only
- B.2 only
- C.Both 1 and 2
- D.Neither 1 nor 2
Correct answer
Explanation
The correct answer is C, Both 1 and 2. Growth with repair and metabolism are two of the features that mark living beings off from non-living things.
A living body grows from inside by making new cells from the food it takes in, and it heals wounds and replaces worn-out tissue. A non-living thing such as a crystal or a sand dune may get bigger, but only by matter piling up on its outside, and it cannot repair damage. Metabolism, the sum of chemical reactions such as respiration, digestion and photosynthesis that release and use energy, goes on in every living cell; it is often called the defining feature of life.
A is wrong because statement 2 on metabolism is also correct.
B is wrong because statement 1 on growth and repair is also correct.
D is wrong because both statements describe real differences between living and non-living things.
Exam tip: growth from within, repair, metabolism, response to stimuli and reproduction mark the living.
Practice Questions
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