Which of the following is formed in light reaction of photosynthesis?
ATP
NADPH2
O2
All of the above
Who proposed 'fluid mosaic model' of plasma membrane?
Singer and Nicholson
Robertson
Benneson
None of the above
Respiratory roots (pneumatophores) are present in
mesophytes
halophytes
xerophytes
None of these
Which is present in vascular bundle ofPinus?
Tracheids
Vessels
Companion cells
All of the above
A.
Tracheids
Tracheids are present in the phloem of all gymnosperms like Cycas, Pinus, etc. These are elongated cells in the xylem of vascular plants that serve in the transport of water and mineral salts.
Growth of stem in diameter is due to
apical cell
lateral meristem
apical meristem
intercalary meristem
The plant group in which stomata opens in night is
mesophytes
succulents
hydrophytes
None of the above