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

Amphibians are considered to be evolved from___________?

A. Newts
B. Varanope
C. Dipnoi
D. Hagfishes

Enterobius vermicularis is commonly known as____________?

A. Flatworm
B. Pinworm
C. Hook worm
D. Tapeworm

Red to orange pigments are_____________?

A. Carotenes
B. Carotenoids
C. Xanthophylls
D. Chlorophyll

Animals of which class of arthropoda are present everywhere_____________?

A. Crustacean
B. Insecta
C. Arachnida
D. Myriapoda

Gaseous exchange in birds occurs at level of_______________?

A. Alveoli
B. Air sacs
C. Bronchi
D. Parabronchi

______________ of earth surface is covered with water?

A. 10%
B. 30%
C. 75%
D. 90%

An antibody is made of _________ polypeptide chains?

A. 1
B. 2
C. 3
D. 4

95% of the cytoplasm of RBCs is____________?

A. Hemoglobin
B. Enzymes
C. Salts
D. Other proteins

_________________ cells of phloem are directly involved in transport of organic solutes?

A. Parenchyma
B. Companion cell
C. Tracheid
D. Sieve element