CBSE /Class 7
Science MCQ Based On Topic nutrition in plants
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CBSE Class 7 Science Topic nutrition in plants
In photosynthesis, plants take in carbon dioxide from small tiny pores called stomata.
The mode of nutrition in which an organism feeds on the dead and decaying organic matter is called the saprotrophic mode of nutrition.
Symbiosis is the act of sharing together so the name symbiotic itself suggests the sharing of shelter and resources for the mutual benefit of both of the individuals.
Lichens are the groups of organisms(fungus and algae ) that share resources and shelter.
Those plants which do not contain chlorophyll undergo a heterotrophic mode of nutrition.
Saprotrophs are plants that derive their nutrition by releasing some enzymes on dead and decaying organic matter and getting their nutrition in a juicy state.
Rhizobium is the nitrogen-fixing bacteria present in the root nodules of the leguminous plants.
Rhizobium shares a symbiotic relationship with the leguminous plant as it fixes nitrogen for them whereas leguminous plants provide food and shelter to them.
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