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Gross primary productivity is-...

Gross primary productivity is-

A

Rate at which organic molecules are formed in an autotroph

B

Rate at which organic molecules are used up by autotroph

C

Storage of organic molecules in the body of an autotroph

D

Rate at which organic molecules are transferred to the next higher trophic level

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The correct Answer is:
A
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Explore conceptually related problems

Assertion : The plant biomass which serves as the food of herbivores and decomposers is said to result from the gross primary productivity. Reason : Gross primary productivity is the rate of net production of organic meterial (biomass).

Which of the following statements are true ? 1. Gross primary productivity is always greater than Net Primary productivity . 2. Gross primary productivity plus the respiration losses give us Net Primary productivity . 3. The rate of respiration of plants affects the Net Primary productivity . 4. Net primary productivity + Gross primary productivity = Respiratory loss.

Select the correct combination of statements regarding the characteristics of productivity : I. The rate of biomass production is called productivity and is expressed in terms of kcal m^(-2) II. Gross primary productivity is rate of production of biomass during photosynthesis IIl. Gross primary productivity minus respiration loss is called net primary productivity IV. Primary productivity depends only on the plant species inhabiting a particular area. The correct statements are

Gross primary productivity minus respiration losses of an ecosystem is

In relation to Gross primary productivity and Net primary productivity of an ecosystem,which one of the following statements is correct?

Justify the following statement in terms of ecosystem dynamics. "Nature tends to increase the gross primary productivity, while man tends to increase the net primary productivity".

Match column I with column II and select the correct option from the given codes. {:("column I","Column II"),("Gross primary productivity",(i)"Self-sustainable"),("Net primary productivity",(ii)"Aquatic ecosystem"),("Pond",(iii)O_(2)"requiring process"),("Aquarium",(iv)"Photosynthetic production"),("Decompositon",(v)"Available to secondary consumers"):}

Match column I with column II and select the correct option from the given codes. {:("column I","column II") , ("Gross primary productivity",(i)"Geen plants"),("Secondary productivity",(ii)"Rate of synthesis of organic matter by consumers"),("Transduc {:("column I","column II"),("Bacteria",(i)"Prisere"),("Green plants",(ii)"Transducers"),("Primary succession",(iii)"Lithosere"),("Succession on bare rock",(iv)"Micro-consumers"):}

Mathc column I with column II and select the correct option from the given codes. {:("column I","column II"),("Gross primary productivity",(i)"Geen plants"),("Secondary productivity",(ii)"Rate of synthesis of organic matter by consumers"),("Transducers",(iii)"Total organic matter produced from solar energy"),("Food web",(iv)"Interconnection of food chains"):}

Which of the following ecosystem has the highest gross primary productivity?

CENGAGE BIOLOGY ENGLISH-ECOSYSTEM-ARCHIVES (CHOOSE THE CORRECT OPTION)
  1. Gross primary productivity is-

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  2. Which one of the following ecosystem types has the highest annual net ...

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  3. Quercus species are the dominant component in

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  4. Study the following statements regarding food chains and select the co...

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  5. The slow rate of decomposition of fallen logs in nature is due to thei...

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  6. About 70% of total global carbon is found in

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  7. Which one of the following types of organisms occupy more than one tro...

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  8. The correct sequence of plants in a hydrosere is

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  9. Study the four statements given below and select the two correct ones ...

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  10. The biomass available for consumption by the herbivores and the decomp...

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  11. Which one of the following is one of the characteristics of a biologic...

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  12. Which of the following representations shows the pyramid of numbers i...

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  13. Which one of the following statements for pyramid of energy is incorre...

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  14. Mass of Living matter at a trophic level in an area at any time is c...

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  15. Identify the possible link ''A'' in the following food chain Plant ...

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  16. In an area where DDT had been used extensively the population of birds...

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  17. The upright pyramid of number is absent in

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  18. In the pyramid of numbers find out the correct possibilities

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  19. Which one of the following is not a functional unit of an ecosystem

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  20. Which one of the following is not a gaseous biogeochemical cycle in ec...

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  21. Pheretima and its close relatives derive nourishment from

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