Diatoms do not decay easily because

(1) they have siliceous walls

(2) their body is impervious to water

(3) they are chitinous

(4) they are abundant in saline soil

Concept Questions :-

Kingdom protista: Chrysophytes
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Erogotamine tartarate extracted from Claviceps, is used for cure of

(1) bodyache

(2) headache

(3) fever

(4) severe stomach pain

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The function of nitrogen fixation in Anabaena (cyanobacterium) is performed by

(1) thylakoid

(2) heterocyst

(3) phycocyanin

(4) phycoerythrin

Concept Questions :-

Kingdom Monera: Blue Green Algae
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Plant decomposers are

(1) Monera and Fungi

(2) Fungi and Plantae

(3) Protista and Animalia

(4) Animalia and Monera

Concept Questions :-

Kingdom Monera: Introduction
Kingdom Fungi:: Introduction
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These organisms are fungus like in one phase of their life cycle and Amoeba like in another phase of their life cycle

(1) diatoms

(2) slime molds

(3) dinoflagellates

(4) water molds

Concept Questions :-

Kingdom protista: Slime Moulds
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In which of the following patterns of viral replication, viruses enter a cell, replicate and then cause the cell to burst, releasing new viruses?

(1) Lytic

(2) Lysogenic

(3) Reprogenic

(4) Both (1) and (2)

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1. The biological classification was attempted instinctively
a. to make scientific studies easy
b. to use organisms for our own use
c. to make better understanding of the research running in all over the world
d. to make connection between living and non-living

Concept Questions :-

Different Classification System
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The first attempt for Biological  classification was because of the need to use organisms for our own use. Here which kind of used are considered?

  1. Food and shelter
  2. Food and Hunting
  3. Food, shelter and clothing
  4. Except clothing all are correct

Concept Questions :-

Different Classification System
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First time the scientific basis for classification was attempted by -

  1. Theopharastus
  2. Aristotle
  3. Van Neil
  4. Darwin

Concept Questions :-

Different Classification System
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Which of the following statement is not incorrect with respect to biological classification attempted by Aristotle?

  1. Based on complex morphological characters
  2. Plants were classified into trees, shrubs and herbs
  3. Animals were classified on the basis of nutrition
  4. Phylogeny was also considered

Concept Questions :-

Different Classification System
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