STD 12 - 5. molecular basis of inheritance — NEET STD 11 Science — Question

All cells of sex organs are formed gametes in

Cells of Spirogyra are

Diatoms stay afloat due to

What is correct for funaria ?

Detritus food chain starts from

Carnivores are

Which of the following statements are correct for effect of Carbon dioxide concentration on photosynthesis ?
(i) Increase in concentration up to 0.05 per cent can cause an increase in CO₂ fixation rates; beyond this the levels can become damaging over longer periods
(ii) The C₃ and C₄ plants respond differently to CO₂ concentrations
(iii) At low light conditions neither C₃ nor C₄ responds to high CO₂ conditions
(iv) At high light intensities, both C₃ and C₄ plants show increase in the rates of photosynthesis
(v) C₄ plants show saturation at about 360 µ1L^-1 while C₃ responds to increased CO₂ concentration and saturation is seen only beyond 450 µ1L^-1
(vi) Current availability of CO₂ levels in atmosphere is limiting to the C₃ plants

The cells in embryo sac which act as haustoria are

Dominant protein in biosphere is