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Question 1

Amount of carbon nitrogen phosphorus present in soil at any particular time

Answer 1

Standing state

Question 2

Standing crop varies in different ecosystem

T/F

Answer 2

T

Question 3

Another name of nutrient cycling

Answer 3

Biogeochemical cycle

Question 4

Two types of nutrient cycling

Answer 4

Gaseous

Sedimentary

Question 5

N2

C4 cycle is

Answer 5

Gaseous

Question 6

S6

P5 cycle

Answer 6

Sedimentary

Question 7

C constitute _____% of dry weight of organisms

Answer 7

49

Question 8

____% of C in ocean

Answer 8

71

Question 9

Atm C is

Answer 9

1%

Question 10

Natural reservoir of phosphorus

Answer 10

Rock

Question 11

Rock contain P as

Answer 11

Phosphate

Question 12

Community near equilibrium with the environment

Answer 12

Climax community

Question 13

Entire sequence of communities that successfully change in a given area

Answer 13

Sere

Question 14

The Individual transitional communities are called

Answer 14

Seral

Question 15

Species that invade the bare area

Answer 15

Pioneer

Question 16

Primary succession on rock are usually

Answer 16

Lichen

Question 17

Primary succession in water pioneer are

Answer 17

Phytoplankton

Question 18

Arrange

Reed swamp, scrub stage, submerged free floating, forest, marsh meadows, submerged plant stage, phytoplankton

Answer 18

Phytoplankton
Reed swamp
Submerged plant
Marsh meadows
Submerged free floating
Scrub stage
Forest

Question 19

Base of each pyramid

Answer 19

Producers

Question 20

3 type of pyramid

Answer 20

Number
Biomass
Energy

Question 21

Pyramid of number in grassland

Answer 21

Upright

Question 22

Pyramid of biomass

Answer 22

Upright

Question 23

Pyramid of biomass of ocean

Answer 23

Inverted

Question 24

Pyramid of energy is always

Answer 24

Upright

Question 25

Of the incident.solar radiation less than ______ is PAR

Answer 25

50

Question 26

Plants capture only _______ par

Answer 26

2-10%

Question 27

Molluscs in aquatic ecosystems

Answer 27

Herbivores

Question 28

Secondary consumers

Answer 28

Primary carnivores

Question 29

Primary consumer

Answer 29

Herbivores

Question 30

______ begins with dead organic matter

Answer 30

DFC

Question 31

Fungi and bacteria are

Answer 31

Decomposer

Question 32

In aquatic ecosystems _____ is major conduit of energy glow

Answer 32

GFC

Question 33

In terrestrial ecosystems the major fraction of energy is in

Answer 33

DFC

Question 34

Each trophic level has a certain mass of living material at a particular time_________

Answer 34

Standing crop

Question 35

The standing crop is measured in

Answer 35

Mass of living organisms (biomass)

Question 36

Measurement of biomass is more accurate in

Answer 36

Dry weight

Question 37

Components of ecosystem

Answer 37

Productivity Decomposition Energy flow Nutrient cycling

Question 38

Primary production

Answer 38

Amount of biomass or organic matter produced per unit area of plants during photosynthesis

Question 39

The rate of biomass production

Answer 39

Productivity

Question 40

Gpp

Answer 40

Rate of production organic matter during photosynthesis

Question 41

NPP

Answer 41

GPP-RL

Question 42

The available biomass for the consumption of heterotroph

Answer 42

NPP

Question 43

Rate of formation of new organic matter by consumer

Answer 43

Secondary productivity

Question 44

Raw material for decomposition

Answer 44

Detritus

Question 45

Imp steps of decomposition

Answer 45

``` Fragmentation Leaching Catabolism Humification Mineralisation ```

Question 46

Detritivores breaks down the detritus into smaller particles

Answer 46

Fragmentation

Question 47

Water soluble inorganic materials go down itni soil horizon

Answer 47

Leaching

Question 48

Bacterial and fungal enzymes degrade the detritus into simple inorganic substance

Answer 48

Catabolism

Question 49

Steps which occurs on detritus

Answer 49

Frag Leach Cata

Question 50

Steps occuring on decomposition in soil

Answer 50

Humi | Miner

Question 51

Humus is ______ in nature

Answer 51

Colloidal

Question 52

The humus is degraded by some microbes and release of inorganic nutrients occur

Answer 52

Mineralisation

Question 53

Decomposition is CO2 requiring process T/F

Answer 53

F | Oxygen requiring

Question 54

_______&_______ate most imp climatic factors

Answer 54

Temp | Soil moisture