Characteristics of Living Organisms
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Questions and Answers

What are some distinctive characteristics exhibited by living organisms?

Growth, reproduction, ability to sense environment, mount a suitable response, metabolism, ability to self-replicate, self-organise, interact, and emergence.

How do multicellular organisms grow?

Multicellular organisms grow by cell division. In plants, growth by cell division occurs continuously throughout their life span.

How do unicellular organisms grow?

Unicellular organisms grow by cell division, which can be observed in in vitro cultures by counting the number of cells under a microscope.

In which organisms are growth and reproduction mutually exclusive events?

<p>In majority of higher animals and plants, growth and reproduction are mutually exclusive events.</p> Signup and view all the answers

How is growth in living organisms different from growth in non-living objects?

<p>Growth in living organisms is from inside, while growth in non-living objects is by accumulation of material on the surface.</p> Signup and view all the answers

What are the twin characteristics of growth in living organisms?

<p>Increase in mass and increase in number of individuals are the twin characteristics of growth in living organisms.</p> Signup and view all the answers

What is a defining property of living organisms that cannot be taken as growth?

<p>Reproduction</p> Signup and view all the answers

In what type of organisms, reproduction refers to the production of progeny possessing features similar to those of parents?

<p>Multicellular organisms</p> Signup and view all the answers

How do fungi multiply and spread easily?

<p>Through asexual spores</p> Signup and view all the answers

What process do lower organisms like yeast and hydra use to reproduce?

<p>Budding</p> Signup and view all the answers

What is the process observed in Planaria (flat worms) where a fragmented organism regenerates the lost part of its body and becomes a new organism?

<p>True regeneration</p> Signup and view all the answers

In single-celled organisms like bacteria, unicellular algae, or Amoeba, what is synonymous with reproduction?

<p>Growth</p> Signup and view all the answers

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