Perhaps, the most obvious and technically complicated feature of all living organisms is this ability to sense their surroundings or environment and respond to these environmental stimuli which could be physical, chemical or biological. We sense our environment through our sense organs. Plants respond to external factors like light, water, temperature, other organisms, pollutants, etc. All organisms, from the prokaryotes to the most complex eukaryotes can sense and respond to environmental cues. Photoperiod affects reproduction in seasonal breeders, both plants and animals. All organisms handle chemicals entering their bodies. All organisms therefore, are 'aware’ of their surroundings. Human being is the only organism who is aware of himself. i.e., has self-consciousness. Consciousness therefore, becomes the defining property of living organisms.

 

The most obvious and technically complicated feature of all living organisms would be-

a. Sensing stimuli and responding to it

b. Metabolism

c. Reproduction

d. Defence

a

 

 

It is technically complicated to respond to which type of environmental stimuli?

a. Chemical

b. Biological

c. Physical

d. All of the above

d

 

 

What is defining property of the living organisms?

a. Consciousness

b. Reproduction

c. Growth

d. Metabolism

a

 

 

Plants respond to which types of external Factors?

a. Light, water, Temperature and Pollutants

b. Light, water, Temperature, Other organisms and Pollutants

c. Light and temperature

d. Light, Temperature and Pollutants

b

 

 

 Photoperiod Affects

a. Reproduction of seasonal breeder plants

b. Metabolism of seasonal breeder animals

c. Metabolism of seasonal breeders

d. Reproduction of seasonal breeders

d

 

 

 What is true with respect to consciousness?

a. All organisms are aware of themselves

b. All organisms handle Chemicals entering their bodies

c. Prokaryotic organisms do not respond to environmental cues

d. Human beings are not self-conscious

b

 

 

The only self-conscious organisms are-

(a) Humans

(b) Apes and humans

(c) Mammals

(d) Primates

a

 

 

 If we define Self-consciousness as the defining property of Human beings, what can be the exception to it?

a. Blind people

b. Autistic child

c. Coma Patient

d. Heart Patient

c

 

 

Which of the following features can be said to be a true defining feature of living beings without any exception?

(1) They can digest their food

(2) All of them can reproduce

(3) They can regenerate

(4) They can respond to external stimuli

d

 

 

 The living organisms can be unexceptionally distinguished from the non-living things on the basis of their ability for: [NEET’07]

(1) responsiveness to touch

(2) interaction with the environment and progressive evolution

(3) reproduction

(4) growth and movement

b

 

 

The most obvious & complicated feature of all living organisms is:

(a) The ability to sense their surroundings or environment and respond to these environmental stimuli

(b) Reproduction - sexual or asexual - for production of progeny of own kind

(c) The ability to growth in size due to cell division

(d) Presence of complex organs systems such as digestive and nervous system

a

 

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