Question

1) Which of the following is a pair of symbiotic organisms? a) lichens b) Rhizobium and legume
c) none of these
d) both a) and b)

Answer 1

answer

both a and b

because rhizobium and legume are symbiotic relationship and lichens are also

Answer 2

The correct answer is option(d) both (a) and (b)

• Symbiosis is a relationship or a biological interaction between two different biological organisms, In which both the organism are benefitted from each other.
• The five main types of symbiotic relationships are- mutualism, commensalism, predation, parasitism, and competition.
• Lichen- Lichen is a symbiotic association between a fungus and autotrophic partner either blue-green algae or cyanobacteria.
• Fungi Provides shelter and absorbs water and mineral while the algae produce food by the process of photosynthesis.
• Rhizobium and legume plants share a symbiotic relationship in which both organisms are benefited from each other.
• Rhizobium is a nitrogen-fixing bacteria.
• Rhizobium needs a plant host to survive. they form nodules in the roots of legume plants.
• Rhizobium supply ammonia to the legumes and in turn receive organic acids as a source of carbon and energy.

Both lichen and Rhizobium are typical examples of symbiotic relationships.

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