Prepare for NEET with Botany-specific practice questions. Covering all major Botany chapters, this is perfect for your NEET Biology needs.
In which of the following, oxygen does not evolve during photosynthesis?
Photosynthetic red algae
Photosynthetic green algae
Photosynthetic blue-green algae
Photosynthesis bacteria
Which is not correct for ancient plants?
They have photosynthetic pigment
They are primitive algae
They use S as hydrogen source
They release oxygen as byproduct
In an experiment demonstrating the evolution of oxygen inHydrilla, sodium bicarbonate is added to water in the experimental set-up. What would happen if all other conditions are favorable?
Amount of oxygen evolved decreases as carbon dioxide in water is absorbed by sodium bicarbonate
Amount of oxygen evolved increases as the availability of carbon dioxide increases
Amount of oxygen evolved decreases as the availability of carbon dioxide increases
Amount of oxygen evolved increases as carbon dioxide in water is absorbed by sodium bicarbonate
PGA, the first carbon dioxide fixation product was firstly discovered in
Chlorella
Scenedesmus
Spinach
Maize
PGA, the first carbon dioxide fixation product was firstly discovered in
Bryophytes
Pteridophytes
Angiosperms
Alga
A reduction in the quantity of oxygen evolution during photosynthesis may be observed at
Light having wavelength more than 680 nm
Light having wavelength less than 680 nm
Light having wavelength 560 nm
Light having wavelength less than 360 nm
Who proved that oxygen evolved in photosynthesis comes from water?
Calvin
Mayer
Blackman
Ruben, Hassid and Kamen
Who proved that oxygen evolved in photosynthesis comes from water?
Calvin
Mayer
Blackman
Ruben, Hassid and Kamen
I. Kinetin is a degradative substance from DNA
II. ABA is present in all plants including lower plants
III. Low ratio of cytokinin to auxin favours root formation only
IV. ABA is synthesised catabolically through glycolysis pathway
Choose the correct combination of options
I and II
II and III
III only
III and IV
and considered to represent a significant step towards evolution of seed habit because
Female gametophyte is free and gets dispersed like seed
Female gametophyte lacks archegonia
Megaspore possess endosperm and embryo surrounded by seed co
Embryo develops in female gametophyte which is retained on the parent sporophyte
