Microorganisms Friends and Foe

Microorganisms Friends and Foe Worksheet-4

1. The fungus that altered the course of history by reducing the population of Ireland from eight million in 1845 to six million a decade later was:

(a) Penicillium glucum               (b) Phytophthora

(c) Synchytrium                            (d) Olpidium

2. The fungus which gave one of the great­est drugs to the world of medicine is:

(a) Penicillium notatum             (b) Ustilago maydis

(c) Colletorichum falcatum       (d) Alternaria solani

Microorganisms Friends and Foe Worksheet-5

1. Viruses are made of:

(a) lipoprotein                               (b) glycosides

(c) nucleoprotein                          (d) lipids

2. The most important character which suggests that viruses are living is:

(a) viruses multiply only in living host

(b) their crystals have a definite shape

(c) viruses grow and multiply

(d) viruses may be crystallized

Microorganisms Friends and Foe Worksheet-6

1. Gastroenteritis, the inflammation of stomach and intestine, is caused by:

(a) E.coli                                        (b) Amoeba

(c) Bacillus bacteria                    (d) Salmonella typhi

2. The figures given below shows four types of microorganisms P, Q, R and S. What microorganisms are repre­sented by P, Q, R and S respectively?

(a) P-Bacteria, Q-Protozoa, R-Viruses, S-Algae

(b) P-Protozoa, Q-Viruses, R-Algae, S-Bacteria