In a light dependent reaction, the ultimate fate of electron(e-) produced as a result of photolysis is the

One of the symptoms of Tobacco Mosaic Disease in plants is

Insectivorous plants are usually found in the soil that is deficient in

Prions are infectious proteins known to cause

The given diagram represents the entry of food particle K in trachea. Which of the following reasons could be responsible for the entry of particle K into larynx instead of oesophagus?

In photorespiration, Rubisco fixes oxygen instead of an inorganic compound. This causes a decrease in the rate of

In the earthworm, the diffusion of oxygen into cells is carried out by

The diaphragm becomes dome shaped when

Legumes, such as clover and alfalfa, have nodules on their roots that contain nitrogen-fixing bacteria. These bacteria convert nitrogen gas from the atmosphere into nitrates. Which of the following best accounts for the presence of nitrogen-fixing bacteria in legume root nodules?

In which of the following phases of growth, do bacteria prepare themselves for division?