Question

What is productivity in an ecosystem? Explain the relationship between gross primary productivity and net primary productivity in an ecosystem.

Answer 1

Productivity in Ecosystem

Explanation:

• It can also be determined to as the energy gathered in the plants by photosynthesis. There are two kinds of profitability, to be specific:  
• primary Productivity
• secondary Productivity  

• primary Productivity: primary Productivity alludes to the age of biomass from autotrophic life forms, for example, plants. Photosynthesis is the essential device for the formation of natural material from inorganic mixes, for example, carbon dioxide and water.
• secondary Productivity: Heterotrophs, for example, creatures impact Secondary Productivity. It is the amassing of vitality at the buyer's level. It continues moving starting with one living being then onto the next, in contrast to essential profitability. This procedure happens because of natural materials being moved between different trophic levels. It is additionally alluded to as pace of increment in the biomass of heterotrophs.
• Productivity-The rate of biomass production is called productivity.
• Gross primary productivity (GPP) of an ecosystem is the rate of production of organic matter during photosynthesis.
• Net primary productivity (NPP)-A considerable amount of GPP is utilized by plants in respiration. Therefore the net primary productivity is the gross primary productivity minus respiration losses (R). GPP – R = NPP
• For the consumption of heterotrophs (herbivores and decomposers), the available biomass is the net primary productivity.

Answer 2

Explanation:

According to NCERT,

Plants take <50 % of sunlight

It uses 2-10 % of it for photosynthesis  (GPP)

ie  1-5 % of total radiation (PAR)

For respiration, it uses 20 %

ie  0.2 - 1 % of GPP

Amount left is NPP

ie 0.8 -4 % of GPP

or 1.6 - 8% of PAR

                            Hope you understand

This is Habel Sabu From Chengannur..... Isn't it the Brainliest

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