8th class science chapter 1 living world and classification of microbes

 

1.cattle are infected by the —-------.

1)virus polio 

2)virus wilt 

3)virus bacteriophage 

4)virus picorna 

Ans. virus picoma 

2.----------feed on dead organisms.

1)protista 

2)fungi 

3)algae

4)virus

Ans fungi

3)According to the 2011 census,there are about —---species of living organisms available on the earth.

1)80 million

2)85 million

3)87 million

4)82 million

Ans 87 million

4. Robert Harding Whittaker divided living organisms into —----kingdoms.

1)2

2)3

3)4

4)5

Ans 5

5. ------ do photosynthesis 

1)chlorella 

2)chlamydomonas

3)both (1)and (2)

4)candida

Ans .both (1)and(2)

6.the cell wall of —is made up of complex sugar called chitin .

1)algae 

2)fungi

3)bacteria 

4)virus 

Ans fungi 

7. mushrooms belong to kingdom—--

1)protista 

2)algae

3)fungi 

4)virus 

Ans fungi 

8. Which of the following reactions is true ?

1)1m=103 micrometer 

2)1m= -6/10 micrometer 

3)1m=6/10 micrometer 

4)1m=4/10 micrometer 

Ans 1m=6/10 micrometer