Name the scientist who demonstrated the effect of different wavelengths of light on photosynthesis using green algae and aerobic bacteria.

Which scientist demonstrated that only the green parts of plants are capable of releasing oxygen?

Evaluate the following statements regarding $T$. $W$. Engelmann's experiment:
$1.$ $T$. $W$. Engelmann stated that chlorophyll present in algae absorbs light of green and orange colors,splits water molecules by photolysis,and releases $O_2$.
$2.$ Aerobic bacteria accumulate near the algae to utilize the released $O_2$.

Who demonstrated that photosynthesis is essentially a light dependent reaction in which hydrogen from a suitable oxidisable compound reduces $CO_2$ to carbohydrates?

Which of the following radioactive oxygen isotopes was used to detect the source of oxygen in photosynthesis?

Who first suggested that light energy is converted into chemical energy within the plant body?