Microorganisms Book Back Questions 8th Science Lesson 16
8th Science Lesson 16
16] Microorganisms
Book Back Questions with Answer and Do You Know Box Content
Choose the best answers:
1. Microorganisms are measured in ______________.
(a) cm
(b) mm
(c) micron
(d) meter
2. ______________ shows both living and nonliving characteristics.
(a) Protozoa
(b) Virus
(c) Bacteria
(d) Fungi
3. _______________ is a prokaryotic microorganism.
(a) Virus
(b) Algae
(c) Fungi
(d) Bacteria
4. Based on shape, the bacteria are classified into ______________ types.
(a) Two
(b) Three
(c) Four
(d) Five
5. Common cold in human is caused by ____________
(a) Plasmodium
(b) Influenza
(c) Vibrio cholera
(d) Aphthovirus
Fill in the blanks:
1. ______________ is prepared from a mould called penicillium.
2. ______________ are the infectious protein particles.
3. The infecting virus particle found outside the host cell is _______________.
4. Microorganism can be seen with the help of a _________________.
5. Bacteria, which has a flagellum at one end is classified as _____________.
State true or false. If false, correct the statement:
1. Disease causing microorganisms are called pathogens.
2. Female anopheles mosquito is a carrier of dengue virus.
3. Chicken pox is a communicable disease.
4. Citrus canker is transmitted by insects.
5. Yeast is used in the large scale production of alcohol.
Match the following:
1. Nitrogen fixing bacteria – vaccine
2. Tuberculosis – prion
3. Kuru – lactobacillus acidophilus
4. Probiotics – bacteria
5. Edward Jenner – rhizobium
Answers:
Choose the best answers:
1. micron 2. Virus 3. Bacteria 4. 4 5. Influenza
Fill in the blanks:
1. Penicillin 2. Prions 3. Virion 4. Microscope 5. Monotrichous
State true or false. If false, correct the statement:
1.True
2.False
Correct answer: Female anopheles’ mosquito is a carrier of mosquito virus
3.True
4.True
5.True
Match the following:
1.Nitrogen fixing bacteria – Rhizobium
2.Tuberculosis – Bacteria
3.Kuru – Prion
4.Probiotics – Lactobacillus acidophilus
5.Edward Jenner- Vaccine