Question

The number of one - directional ineractions in a asystem with two biotic components and two factors of environment is

A. 4

B.8

C.12

D.16

Which of the following is a boundary for a lake that is considered a system?

A. the shoreline on a map

B. the water surface

C. the bottom sediment in the lake

D. All of the above

MIcroorganisms capable of living under either aerobic or anaecrobic conditions are described as

A. Obligate anaerobes

B. Facultative anaerobes

C. Oxygen - tolerant anaerobes

D. Microaerophiles

Answer 1

1) Two biotic components and two abiotic components may lead to one directional interaction of 4 types

2) The shoreline on map serves as a boundary as it separates the lake system from the entire land system. Similarly, the water surface is a boundary as it separates the atmophere from the water. The correct answer is : D-all of the above

3) The correct answer is : Facultative anaerobes
These microorganisms can survive in aerobic conditions but also can utilise the oxygen if present in their growing environment.