The productivity of aquatic ecosystem is basically determined by light and____________?
The productivity of aquatic ecosystem is basically determined by light and____________?
A. CO2
B. O2
C. Water
D. Nutrients
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A line on map connecting places that receives equal solar radiation is called:________?
A line on map connecting places that receives equal solar radiation is called:________?A. Isobar
B. Isohel
C. Isochore
D. None of theseThe sequence of 3 bases on tRNA which is complementary to condon of mRNA is called____________?
The sequence of 3 bases on tRNA which is complementary to condon of mRNA is called____________?
A. Gene
B. Anticodon
C. Code
D. CodonDiatom frustule/ shell is made of_____________?
Diatom frustule/ shell is made of_____________?
A. Silica
B. Calcium carbonate
C. Manesium carbonate
D. Both B. and C.Molecular formula of chlorophyll ‘a’ molecule is___________?
Molecular formula of chlorophyll ‘a’ molecule is___________?
A. C55H72O5N4Mg
B. C55H70O6N4Mg
C. C50H72O6N4Mg
D. C55H70O5N4MgThe first eukarotes appeared about __________ years ago?
The first eukarotes appeared about __________ years ago?
A. 1.5 billion
B. 2.5 billion
C. 3.5 billion
D. 4.5 billionAnimals fats are ______________ atroom temperature?
Animals fats are ______________ atroom temperature?
A. Liquids
B. Gases
C. Solids
D. None of these