Multiple Choice Questions

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Aspirin is a/an

  • antibiotic

  • antipyretic

  • antiseptic

  • none of the above


B.

antipyretic

Antipyretic drug is the drug which decreases body temperature, eg, Aspirin.

Antibiotics are drugs which inhibits the growth of microorganisms, eg, Penicillin.

Antiseptics are substances which destroy the living organism from living surfaces like skin, eg, Savlon.


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Pure tall plants are crossed with pure dwarf plants. In the F1 generation, all plants were tall. These tall plants of F1 generation were selfed and the ratio of tall to dwarf plants obtained was 3 : 1. This is called

  • dominance

  • inheritance

  • codominance

  • heredity


Benthic organisms are found in

  • surface of marine water

  • middle of water in sea

  • bottom of sea

  • on ground


Sporogony of malarial parasite occurs in

  • liver of man

  • RBCs of man

  • salivary glands of mosquito

  • stomach wall of mosquito


In Cycas, pollination takes place in

  • 3- celled stage

  • 4- celled stage

  • 2- celled stage

  • 1- celled stage


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The presence of diversity at the junction of territories to two different habitats is known as

  • bottleneck effect

  • edge effect

  • junction effect

  • Pasteur effect


Ubisch bodies are present in

  • pollen tube

  • pollen grain

  • microspore

  • tapetum


Ozone depletion in staratosphere would result in 

  • forest fires

  • global warming

  • skin cancer incidence

  • None of the above


Chromosome complement with 2n - 1 is called

  • monosomy

  • nullisomy

  • trisomy

  • tetrasomy


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In Pisum sativum, there are 14 chromosomes. How many types of homologous pairs can be prepared?

  • 14

  • 7

  • 214

  • 210