Biology MCQ Online Quiz

Q31. Among the following which animal is considered as Vermin
(A) Elephant
(B) Wild Boar
(C) Tiger
(D) Leopard

Q32. What are the amphibians secreting toxin
(A) Frogs
(B) Toads
(C) Salamanders
(D) Caecilians

Q33. Which law is used to understand the structure and functions of heart and blood vessels
(A) Chargaff's law
(B) Dopler's law
(C) Laplace law
(D) Hardy Weinberg law

Q34. The roots that grows vertically downwards from the lateral branches into the soil is called as
(A) Epiphytic roots
(B) Prop roots
(C) Stilt roots
(D) Climbing roots

Q35. Skin pigmentation is mainly due to
(A) Lymphocytes
(B) Melanocytes
(C) Monocytes
(D) Leucocytes

Q36. Right part of the Human Heart contains
(A) Deoxygenated blood
(B) Dehydrogenated blood
(C) Oxygenated blood
(D) Hydrogenated blood

Q37. The photosynthetic bacteria using inorganic electron donor for reduction of CO₂ are called
(A) Photoorganotrophs
(B) Chemoorganotrophs
(C) Chemolithotrophs
(D) Photolithotrophs

Q38. Largest leukocyte (WBC) is _______
(A) Monocyte
(B) Basophil
(C) Eosinophil
(D) Lymphocyte

Q39. The smallest bone in human body the "stapes" is located in
(A) Head
(B) Nose
(C) Ear
(D) Finger

Q40. Plants which grow in dry habitat is _______
(A) Xerophytes
(B) Mesophytes
(C) Hydrophytes
(D) Bryophytes

Q41. Longest Cell in human body is
(A) Skin Cell
(B) Blood Cell
(C) Nerve Cell
(D) Muscle Cell

Q42. Lymphocytes are manufactured by
(A) Bone marrow
(B) Spleen
(C) Liver
(D) Lymph nodes

Q43. Lipase converts fats into
(A) Maltose
(B) Casein
(C) Peptides
(D) Fatty acids and glycerol

Q44. Lichens are formed due to the symbiotic association of
(A) moss and fungi
(B) bacteria and fungi
(C) algae and fungi
(D) None of these

Q45. In anatomical language, the heart muscle is called
(A) pericardium
(B) endocardium
(C) myocardium
(D) epithelium

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