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
Category: Biology Mcqs
Double fertilization occurs in_________??
A. All plants
B. All seed plants
C. Gymnosperms
D. Angiosperms
The structure of an enzyme is altered by____________??
A. Irreversible inhibitor
B. Reversible inhibitor
C. Competitive inhibitor
D. Non-competitive inhibitor
Porifera range in size from__________??
A. Few millimeter wide to more than one meter tall
B. Few centimeter wide to more than one meter tall
C. Few decimeter wide to more than one meter tall
D. One meter wide to more than millimeter tall.
Antibodies play important role against microorganisms and other pathogens to which type of proteins do they belong________??
A. Globular proteins
B. Fibrous Proteins
C. Both a and b
D. None of these
Lungs are covered with double layered thin membranous sac called___________??
A. Disphragm
B. Pleura
C. Pericardium
D. Rib cage
Who developed the vaccine against anthrax??
A. Louis Pasteur
B. Edward Jennar
C. Leuvenhoek
D. Alexander Fleming
The word virus is derived from Latin word venome meaning____________??
A. Sweet fluid
B. Sore Fluid
C. Poisonous Fluid
D. Salty Fluid
Among the followings which is the most longest supportive cell??
A. Tracheids
B. Sclereids
C. Trachea
D. Collenchyma cells
Secondary cell wall of sclerenchyma cells is impregnated with_________________??
A. Cellulose.
B. Peptidoglycan and murein.
C. Lignin.
D. Pectin.
