The oxygen released during photosynthesis is obtained
from the catalytic splitting of carbon-dioxide in plant tissues
from the breakdown of glucose molecules in cells
during the photolysis of water using energy trapped in chlorophyll
by the excretion of excess oxygen in plant tissues
Correct answer is C
No explanation has been provided for this answer.
Which of the following does not occur during inhalation in mammals?
Rib cage is raised up
Diaphragm contracts and becomes dome shaped
Inter-coastal muscle contracts
Volume of the thoracic cavity increases
Correct answer is B
No explanation has been provided for this answer.
Which of the following is used to measure the rate of water uptake in plants?
Potometer
Hydrometer
Hygrometer
aspirator
Correct answer is A
No explanation has been provided for this answer.
The function of the red blood cells is to
engulf invading bacteria
aid in protein formation
transport oxygen to the cells
control blood glucose level
Correct answer is C
No explanation has been provided for this answer.
Diffusion is most effective in living organisms, when the surface area is
large and the thickness is also large
small while the thickness is large
large while the thickness is small
the same as its thickness
Correct answer is C
No explanation has been provided for this answer.