THE CELL
CELL THEORY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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respond to external stimuli
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absorb complex food molecules
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produce offspring by means of sexual reproduction
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use energy to actively move through the environment
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Detailed explanation-1: -The NCERT defines living organisms as self replicating, evolving, self regulating interactive systems capable of responding to external stimuli.
Detailed explanation-2: -All living things are able to respond to stimuli in the external environment. For example, living things respond to changes in light, heat, sound, and chemical and mechanical contact. To detect stimuli, organisms have means for receiving information, such as eyes, ears, and taste buds.
Detailed explanation-3: -Anything that causes a living organism to react is called a stimulus. All living organisms respond to their environment. Response to stimuli is an important characteristic of life.
Detailed explanation-4: -A dog salivating at the smell of food, a flower opening in sunlight and a worm crawling towards moisture are examples of organisms responding to stimuli from their surroundings. All organisms respond to their surroundings in order to improve their chances of survival and reproduction.
Detailed explanation-5: -All living organisms share several key characteristics or functions: order, sensitivity or response to the environment, reproduction, growth and development, regulation, homeostasis, and energy processing.