Which component of the compound microscope aids in the collecting and focussing of light rays on the material to be examined?

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#Question id: 23415

#General Aptitude

Montreal protocol is related to

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#Question id: 3662

#Unit 3. Fundamental Processes

______________ refers change to the DNA that affects expression of a gene but is not inherited.

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#Question id: 19365

#Unit 13. Methods in Biology

Which vectors carry the longest foreign DNA fragments?

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#Question id: 11099

#Unit 7. System Physiology – Animal

In the mammalian alveoli, the partial pressure of O2 is _______ that of atmospheric air and the CO2 partial pressure is _______ that of atmospheric air

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#Question id: 11653

#Unit 10. Ecological Principles

Given some characteristics of the climax community

i) Tolerate its own reactions

ii) Tends to become mesic

iii) Less stable

iv) Complex stratification

v) Simple food web

vi) Less mutualism

vii) Gross production is equals to community respiration

viii) Net community production is zero

Which of the following combination shows the characteristics of climax community?