Biology MCQs
Biology MCQs Test Preparation | Latest 2025 Quiz FPSC, NTS, KPPSC, PPSC, SPSC, BPSC, OTS, UTS, PTS, CTS, ATS, ETEA MCQs Test Questions.
Open circulatory system can contain_________?
A: Red Blood Cells
B: White Blood Cells
C: Haemoglobin
D: All of these
White Blood Cells
Pressure flow theory was proposed by_________?
A: H-Van Mohl
B: Dixon
C: Vander wall.
D: Earnst Munch
Earnst Munch
The opening and closing of stomata is directly controlled by the___________?
A: Temperature
B: pH
C: Light
D: None of these
Light
There are _________ hypothesis which may explain opening and closing of stomata?
A: One
B: Two
C: Three
D: Four
Two
Transport of minerals from soil to epidermal cells of roots via carrier protein molcules along their concentration gradient is called___________?
A: Diffusion.
B: Facilitated diffusion.
C: Passive transport.
D: Active transport.
Facilitated diffusion.
Pulling upward of water and dissolved minerals towards the leaves through the xylem tissue is called__________?
A: Transpiration pull
B: Root pressure
C: Ascent of sap.
D: All of these
Transpiration pull
A pressure created by active secretion of salts and other solutes from other cells into xylem sap is called___________?
A: Transpiration pull
B: Root pressure
C: Osmotic pressur
D: None of these
Root pressure
___________ function as multisensory hydraulic valve?
A: Lenticels
B: Guard cells
C: Hydathods
D: All of these
Guard cells
_________ give rise to macrophages, which destroy larger particles by phagocytosis.
A: Nautrophils
B: Basophila
C: Monocyte
D: Lymphocyte
Monocyte