In which group of the organisms listed below, food material is broken down outside the body and absorbed ?
The opening and closing of the stomatal pore depends upon
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Movement of food through the oesophagus is due to :
Oxygen liberated during photosynthesis comes from
Oxygen released during photosynthesis is derived from
The common step between aerobic and anaerobic respiration takes place in :
When air is blown from mouth into a test-tube containing lime water, the lime water turns milky due to the presence of
Which is the first enzyme to mix with food in digestive tract ?
Which part of alimentary canal receives bile from the liver ?
In which part of human digestive tract does common bile duct open?
Which of the following statements is not correct?
Which of the following protects inner lining of stomach from hydrochloric acid secreted by gastric glands ?
Blood pressure is measured by an instrument called
When few drops of iodine were poured on a potato slice, the potato turned blue-black in colour. This indicates that potato contains