Question

7 Based on their habitat, archaebacteria live in extreme environmental condition such as
very high temperatures
absence of oxygen
absence of light
all of the options

8 Based on their habitat, archaebacteria is grouped into all of the following except
Methanogens
Halogens
Thermoacidiophiles
Halophiles

9 A "staphylo" bacteria have its cells arranged in ----------- like grapes.
chain
cluster
pair
non of the options

Answer 1

7.all of the options - all these environments are extreme for most organisms on Earth, but archaebacteria live there
8.halogens - it is a chemical term, which refers to elements Cl, Br, I, F and At.
9. cluster - multiple bacteria join together in various orientations