A. Increases.
B. Lowers.
C. Doesn’t effect.
D. Maintains.
Biology
Symbionts which help plants in uptake of phosphorous and trace metals such as zinc and copper.
A. Bacteria
B. Viruses
C. Fungi
D. Cyanobacteria
Low level of CO2 favours ……… of the stomata.
A. Opening
B. Closure
C. Both of these
D. None of these
There are ……… hypothesis which may explain opening and closing of stomata?
A. One
B. Two
C. Three
D. Four
The opening and closing of stomata is directly controlled by the………..?
A. Temperature
B. pH
C. Light
D. None of these
Pressure flow theory was proposed by………?
A. H-Van Mohl
B. Dixon
C. Vander wall.
D. Earnst Munch
Open circulatory system can contain………?
A. Red Blood Cells
B. White Blood Cells
C. Haemoglobin
D. All of these
95% of the cytoplasm of red blood cells is the………..?
A. Antibodies
B. Hemoglobin
C. Enzymes
D. Proteins
……… give rise to macrophages, which destroy larger particles by phagocytosis.
A. Nautrophils
B. Basophila
C. Monocyte
D. Lymphocyte
……….. function as multisensory hydraulic valve?
A. Lenticels
B. Guard cells
C. Hydathods
D. All of these