Which typical stage is known for DNA replication?
Metaphase
G1- phase
S- phase
G2- phase
C.
S- phase
S- phase or Synthesis phase is the phase of the cell cycle in which DNA is replicated. It occurs between G1 and G2 phase.
During this phase, DNA is replicated and histones are sythesized so that each chromosomes becomes two chromatids.
Photorespiration is favoured by
high O2 and low CO2
high CO2 and low O2
high temperature and low O2
high humidity and temperature
The true statement about 'green-house effect' is that it is
caused only by CO2
caused by CO2, CFCs, CH4 and NO2 gases
caused by combination of many gases
none of the above
Cochineal insects have proved very useful for
rodents control
Parthenium control
cactus prevention
Eicchornia prevention
The formation of canal system in sponges is due to
reproduction
porous walls
folding of inner walls
gastro- vascular system
