_________________ cells of phloem are directly involved in transport of organic solutes?
A. Parenchyma
B. Companion cell
C. Tracheid
D. Sieve element
Biology Mcqs
95% of the cytoplasm of RBCs is____________?
95% of the cytoplasm of RBCs is____________?
A. Hemoglobin
B. Enzymes
C. Salts
D. Other proteins
An antibody is made of _________ polypeptide chains?
An antibody is made of _________ polypeptide chains?
A. 1
B. 2
C. 3
D. 4
______________ of earth surface is covered with water?
______________ of earth surface is covered with water?
A. 10%
B. 30%
C. 75%
D. 90%
Gaseous exchange in birds occurs at level of_______________?
Gaseous exchange in birds occurs at level of_______________?
A. Alveoli
B. Air sacs
C. Bronchi
D. Parabronchi
Animals of which class of arthropoda are present everywhere_____________?
Animals of which class of arthropoda are present everywhere_____________?
A. Crustacean
B. Insecta
C. Arachnida
D. Myriapoda
Red to orange pigments are_____________?
Red to orange pigments are_____________?
A. Carotenes
B. Carotenoids
C. Xanthophylls
D. Chlorophyll
Enterobius vermicularis is commonly known as____________?
Enterobius vermicularis is commonly known as____________?
A. Flatworm
B. worm
C. Hook worm
D. Tapeworm
Amphibians are considered to be evolved from___________?
Amphibians are considered to be evolved from___________?
A. Newts
B. Varanope
C. Dipnoi
D. Hagfishes
Which of the following is the correct sequence in the biological method?
Which of the following is the correct sequence in the biological method?
A. Observation?hypothesis?law?theory
B. Observation?hypothesis?deduction?testing of deduction
C. Hypothesis?observation?deduction?testing of deduction
D. law?theory?deduction?observation