Biology

Which one of the following statements about viruses is correct ?

Options

(a) Nucleic acid of viruses is known as capsid (b) Viruses possess their own metabolic system (c) All viruses contain both […]

Which one of the following statements about viruses is correct?

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(a) Viruses possess their own metabolic system (b) Viruses contain either DNA or RNA (c) Viruses are facultative parasites (d) Viruses are […]

Viruses are no more ‘alive’ than isolated chromosomes because

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(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

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(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 […]