Selina solutions

Selina solutions

Grade 7

Classification of Plants | Long Answer Questions (LA)

Question 1

Q1) What name is given to bacteria found in the root nodules of pea plants ?

Solution :

Rhizobium bacteria are found in the root nodules of leguminous plants ,such as pulses and pea.

These bacteria convert nitrogen gas into soluble compounds called nitrates,which are used by plants.It is observed here that the bacteria provide food to the host plant and the host plant in turn provides shelter for the bacteria.This kind of relationship wherein two organisms live in harmony each benefiting from such a relationship is called symbiosis .The organisms are called symboints. Bacteria are also used in the process of tanning of animal skins and hides.This process helps to soften them to obtain leather.

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subject-cta

Question 1

Q1) What name is given to bacteria found in the root nodules of pea plants ?

Solution :

Rhizobium bacteria are found in the root nodules of leguminous plants ,such as pulses and pea.

These bacteria convert nitrogen gas into soluble compounds called nitrates,which are used by plants.It is observed here that the bacteria provide food to the host plant and the host plant in turn provides shelter for the bacteria.This kind of relationship wherein two organisms live in harmony each benefiting from such a relationship is called symbiosis .The organisms are called symboints. Bacteria are also used in the process of tanning of animal skins and hides.This process helps to soften them to obtain leather.

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subject-cta
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