ecosystem Flashcards

1
Q

components of ecosystem

A

productivity
decomposition
energy flow
nutrient cycling

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2
Q

factors regulating the function of an entire pond

A

solar input
cycle of temp
day length
other climatic conditions

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3
Q

father of indian ecology

A

ramdev mishra

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4
Q

autotrophs are represented by

A

phytoplankton ,some algae

floating submerged and marginal plants found at the edges

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5
Q

consumers are represented b y

A

zooplankton

free swimming and bottom dwelling forms

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6
Q

decomposers are represented by

A

fungi
bacteria
flagellates(esp availble in the bottom of the pond)

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7
Q

———–is defined as the amount of biomass or organic matter produced per unit area over a time period by plants during photosyenthesis

A

primary production

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8
Q

primary productivity is expressed in terms of

A

gm -2 or (kcal m-2)

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9
Q

rate of biomass production is called

A

productivity (yr -1)

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10
Q

net primary productivity is the available biomass for the consumption to————

A

heterotrophs (herbivores and decomposers)

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11
Q

secondary productivity is defined as the rate of formation of new organic matter by ———–

A

consumers

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12
Q

the rate of decomposition controlled by

A

chemical composition of detrises and climate factors

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13
Q

————fsvoud decomposition?

A

warm and moist environmnt

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14
Q

most imp climatic factorss that reg decomposition through their effects on the activities of soil microbes

A

temp anmd soil moisture

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15
Q

of the incident solar rdiation less than 50 perc of it is

A

PAR

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16
Q

plants absorbs only————-perc of par

A

2-10%

17
Q

in a terrestrial ecosystem the major producers are

A

herbaceous and woody plants

18
Q

eg for herbivores in aquatic ecosystem

A

molluscs

19
Q

eg for herbivores in aquatic ecosystem

A

molluscs

20
Q

based on ——————-organisms occupy specific place in the food chain tht is known as their trophic level

A

source of their nutrition or food

21
Q

description of ecological succession usually focus on

A

changes in vegetation

22
Q

another name for nutrient cycling

A

biogeochemical cycle

23
Q

two main structural features of an ecosystem

A

stratification amd species composition

24
Q

the entire sequence of communities that suucessively change in a given area are called

A

sere