PPSC FPSC KKPSC BPSC SPSC Lecturer Botany MCQs Test No. 50

Lichen is the example of:

The chief reservoir of nitrogen is the:

The chemical elements essential for life in living organisms are called___ elements:

The succession started on deserts are termed as:

Several bacteria in soil are oxidize ammonia or ammonium ions this oxidation is known as:

Polytrichum is a:

Plants growing in xeric condition are called :

Succulent plants are:

The eating of grasses is termed as:

Both Organisms benefit from the__ relationship.

In this type of relationship only one organisms benefit from the relationship. The other is not affected at all:

The nutrient cycles also called:

The principal stages of this N cycle are:

Insect and flower relationship is the example of:

Soil nitrogen resources are also strengthened by the addition of___ by the man himself:

Nitrogen makes up ___ percent of the gases in atmosphere.

The root Nodules bacteria fix____ in soil air:

Mycorhizia is an association between the roots and plants growing in acid soil and certain:

__ symbiont the root nodular plants:

The process by which this limited amount of nitrogen is circulated and re- circulated throughout the world of living organisms is known as the:

The last stage of plant succession is:

__ lichens are the examples foliose lichens:

These micro- organisms use the proteins amino acids and release excess of ammonia ( NH³) or ammonium ions (NH⁴). This process is known as:

Root Nodules are the example of:

__ incorporate gaseous nitrogen from air into organic nitrogen containing compounds.