Which of the following food substances is digested in the stomach?
The conversion of excess amino acids into urea occurs in the
For pollination and fruit formation, the essential part(s) of the flower should be the
Which one of the following parts of the mammalian body is most closely associated with the production of urine?
A potometer is used to determine the rate at which a shoot
A green plant growing in a compost pit is feeding
The part of the cell solely responsible for respiration is the
In anaerobic respiration, glucose is converted to one of the following
During excretion of urea there is also a corresponding re-absorption of water into the blood. This re-absorption takes place in the
If the bark and phloem tissue of a woody shoot are peeled off by ringing, the whole plant will eventually die because
The filament of spirogyra were put into equal volumes of sugar solutions X and Y. After 5 minutes, filaments from solution X had their cells contents rounded up while those from Y were unaffected. The experiment shows that
which part of the human brain is concerned with reflexes controlling the rate of heart beat and breathing?
Which of the following hormones is produced during fright or when agitated?
The following are connected with the movement of a reflex action (1) Central nervous (2) Muscles (3) Skin (4) Sensory nerve (5) Motor nerve. Which of the following sequences indicates a correct path?
Biconcave lenses are used in the correction of an eye defect called?
The center which controls respiratory activities in the mammalian brain is the
A student trying to find out the order in which organisms appear on a cleared plot is studying one of the following
An organism X lives entirely on the waste products in another organism Y. In this association X is a
The tips of some rice seedlings were cut off while some were left intact. Both were covered with a container which had only one small hole to allow light through. After twenty-four hours it was observed that