41. Which of the following is true?
(a) All bacteria respire
(b) All bacteria are anaerobic
(c) All bacteria are photosynthetic
(d) All bacteria are non-photosynthetic
42. Which of the following animals has the longest life span?
(a) Elephant
(b) Crocodile
(c) Dog
(d) Tortoise
43. DPT is a vaccine for:
(a) Diarrhoea, polio and typhoid
(b) Diptheria, whooping cough and tetanus
(c) Diarrhoea, polio and tetanus
(d) Diptheria, whooping cough and typhoid
44. The sweetest sugar is:
(a) Sucrose
(b) Glucose
(c) Fructose
(d) Lactose
45. Deficiency of Vitamin E causes:
(a) Rickets
(b) Anaemia
(c) Sterility
(d) Beri beri
46. ELISA test is prescribed for:
(a) Cancer
(b) Typhoid
(c) Polio
(d) AIDS
47. The organism living at the bottom of the water mass is called:
(a) Nekton
(b) Neuston
(c) Benthos
(d) Plankton
48. Which of the following has blood, but respires?
(a) Fish
(b) Earthworm
(c) Hydra
(d) Cockroach
49. The characteristic feature of virus is that:
(a) It lacks chlorophyll
(b) It multiplies only on dead animals
(c) It is made of fats
(d) It multiplies only on hosts
50. Which of the following animals is called a living fossil?
(a) Polystomella
(b) Peripatus
(c) Sea cucumber
(d) Sacculina