A free living, nitrogen-fixing cyanobacterium which can also form symbiotic association with the water fern Azolla is:
Tolypothrix
Chlorella
Nostoc
Anabaena
All types of plastids possess essentially the same structure because they:
Perform the same function
Stored food materials like starch, fat and protein
Occur in aerial parts
Can transform from one form to another
Stroma in the chloroplasts of higher plants contains:
Light – independent reaction enzymes
Light – dependent reaction enzymes
Ribosomes
Chlorophyll
The substrate for photorespiration is :
Ribulose bis-phosphate
Glycolate
Serine
Glycine
Cyclic - photophosphorylation results in the formation of:
NADPH
ATP and NADPH
ATP, NADPH and O2
ATP
Carbon dioxide joins the photosynthetic pathway in:
PS-I
PS-II
Light reaction
Dark reaction
The first step of photosynthesis is:
Excitation of electron of chlorophyll by a photon of light
Formation of ATP
Attachment of CO2 to 5 carbon sugar
Ionization of water
Which one is a C4 plant?
Papaya
Pea
Potato
Maize/Corn
Photosystem-II occurs in:
Stroma
Cytochrome
Grana
Mitochondrial surface
A very efficient converter of solar energy with net productivity of 2 - 4 kg/m2 or more is the crop of :
Wheat
Sugarcane
Rice
Bajra
