ecosystem

Question 1

term ecosystem was given by

Answer 1

tansley

Question 2

functional unit of ecology

Answer 2

ecosystem

Question 3

define biosphere

Answer 3

earth is sum of all small biospheres

Question 4

define stratification

Answer 4

vertical distribution f trees in an area

Question 5

define species composition

Answer 5

enumeration of organisms in different species

Question 6

functions of ecosystem

Answer 6

productivity
energy transfer
decomposition
nutrient recycling

Question 7

define productivity

Answer 7

rate of biomass production by photosynthesis in a particular area at a particular time interval

Question 8

define gross primary productivity

Answer 8

total biomass or energy made by plant using sunlight

Question 9

net primary productivity

Answer 9

GPP - R

Question 10

define secondary productivity

Answer 10

when herbivores make biomass or energy by using plants NPP

Question 11

productivity depends on

Answer 11

plant species
mineral availability
water avaliability

Question 12

annual net primary productivity

Answer 12

170 billion tons

Question 13

define decomposition

Answer 13

converts organic into inorganic matter

Question 14

steps in decomposition

Answer 14

fragmentation
leaching
catabolism
humification
mineralisation

Question 15

Full form of PAR

Answer 15

photosynthetic active radiation

Question 16

define food chain

Answer 16

simple way to represent transfer of energy , but in real food webs are seen in nature due to interdependency

Question 17

full form of GFC

Answer 17

grazing food chain

Question 18

full form of DFC

Answer 18

detritus food chain

Question 19

define trophic level

Answer 19

organisms occupy a place in the nature surrounding or in a community according to their feeding relationship with other organisms

Question 20

define standing crop

Answer 20

at any trophic level all boimass available

Question 21

shape of tree ecosystem

Answer 21

inverted