12.Ecosystem
normal

ઊંડા સમુદ્રમાં ઉષ્ણજળમાર્ગના નિવસનતંત્રના પ્રાથમિક ઉત્પાદકો કયા છે?

A

લીલી લીલ

B

રસાયણ સંશ્લેષિત બેક્ટરિયા

C

નીલહરિત લીલ

D

દરિયામાં આવેલ કોરલ

(NEET-2016)

Solution

(b) :Hydrothermal vents are cracks in the ocean floor that emit jets of hot water loaded with minerals and chemosynthetic bacteria. These bacteria are autotrophs that oxidise hydrogen sulphide in vent water to obtain energy which is used to produce organic material. These chemosynthetic bacteria are the primary producers and form the base of vent food webs. All vent animals ultimately depend on bacteria for food.

Standard 12
Biology

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