Viruses are no more ‘alive’ than isolated chromosomes because
Options
(a) both require the environment of a cell to replicate (b) they require both RNA and DNA (c) they both need food molecules […]
Assertion – bentham and hooker’s system of classification is based on more number of characters and natural affinites, reason – bentham and hookers system of classification is a phylogenetic system
Options
(a) if […]
The most important feature of all living systems is to
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(a) utilize oxygen to generate energy (b) replicate the genetic information (c) produce gametes (d) utilize solar energy for metabolic activities
Correct […]
The main role of bacteria in the carbon cycle involves
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(a) photosynthesis (b) chemosynthesis (c) digestion or breakdown of organic compounds (d) assimilation of nitrogenous compounds
Correct Answer:
digestion or breakdown of […]
All living organisms are linked to one another because
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(a) they have some common geneitc material of the same type (b) they share common genetic material but to varying degrees (c) all […]
Which one of the following is not true about lichens?
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(a) Their body is composed of both algal and fungal cells (b) Some form food for reindeers in arctic regions (c) Some […]
Which of the following about organism is not correct?
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(a) biological organisation starts with submicroscopic molecular level (b) 25 elements are essential for animals and 17 for plants (c) 98% mass of […]
Which of the following is not true for a species?
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(a) Members of a species can interbreed (b) Gene flow does not occur between the populations of a species (c) Each species […]
Phenetic classification is based on
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(a) sexual characteristics (b) the ancestral lineage of existing organisms (c) observable characteristics of existing organisms (d) dendograms based on DNA characteristics
Correct Answer:
observable characteristics of […]
What is true for photolithotrops?
Options
(a) Obtain energy from radiations and hydrogen from organic compounds (b) Obtain energy from radiations and hydrogen from inorganic compounds (c) Obtain energy from organic compounds (d) […]
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