ecosystem

Question 1

components of ecosystem

Answer 1

productivity
Decomposition
nutrient cycling
energy flow

Question 2

primary production expressed in terms of weight or energy is

Answer 2

gm^-2
k cal m^-2

Question 3

rate of biomass production expressed as

Answer 3

gm^-2 yr^-1
k calo m ^-2 yr^-1

Question 4

NPP?

Answer 4

GPP-R

Question 5

Annual net primary productivity of whole biosphere is

Answer 5

170 billion tons

Question 6

productivity of ocean is [70% of surface]

Answer 6

55 billion tons

Question 7

steps of decomposition

Answer 7

fragmentation
leaching
catabolism
humification
Mineralisation

Question 8

eg of detrivores

Answer 8

earth worm

Question 9

rate of decomposition is slower then its composition of detritus is or if it is faster then it will be of?

Answer 9

lignin, chitin.
nitrogen, h20 soluble substance; sugar.

Question 10

saprotrophs

Answer 10

get energy by degrading dead organic matter or detritus

Question 11

in an aquatic ecosystem ——- is the major conduit for energy flow

Answer 11

grazing food chain [GFC]