Ecology Flashcards
Is milk more nutritious than curd
No. Curd has more vit B12 coz of presence of lactobacillus bacteria (which converts milk to curd)
The bioactive substance produced by a bacterium and used for the patients undergone myocardial infraction is
Streptokinase
Ganga action plan was initiated when? And GAP and YAP were initiated by?
GAP- 1985 ..
GAP AND YAP- the ministry of environment and forest
Define mutualism
OBLIGATORY mutually beneficial association
Example of mutualism
Yucca and pronuba
Sexual deceit is observed between?
Ophrys ( an orchid)
And wasp (bumble bee)( colpa aurea)
First census in India?
1891.. fir har 10 saal baad
Ozone day?
Sept 16
Who are partial regulators
Heterotherms
Ex- egg laying mammals. (Platypus)
Vital index of a population is represented by
(Natality/mortality)× 100
Does competition benefit someone?
No its (- , -)
Wat is brood parasitism
Exploitation of nurturing ability
Misnomer
Ex - cuckoo and crow
Resource partitioning is an imp mechanism whic promotes
Co-existence
Can competition occur between two unrelated species
Yes
To overcome altitude sickness wat adaptions are shown by humans
Enhanced RBC production
Decreases in affinity of Hb for oxygen
High breathing rate
Fishes and snails avoid summer related problems by?
Aestivation
Praying mantis is a good example of
Camouflage
Which type of association is found b/w entomophilous flower and pollinating agent?
Co- evolution
According to Darwin organic evolution is due to?
Interspecific competition
In lake phytoplankton grow kn abundance in
Limnetic zone
Littoral zone is located along
Sea
An association of individuals of different species living in the same habitat and having functional interactions is
Biotic community
Large woody vines are commonly found in
Tropical rainforests
Quercus species is dominant component of
Temperate deciduous forests
Annual migration does not occur in case of
Salamander
(Salmon shoes annual migration )
Does coniferous forest has evergreen trees?
Yesss
The abundance of species population within its habitat is called niche density
The basic unit of study in ecology is
Organism
In aquatic ecosystem the limiting factor for productivity is?
Light
In aquatic ecosystem the limiting factor for productivity is?
Light
The major reservoir of carbon on earth is?
Oceans
Which of the following has the largest population in a food chain
Decomposers
Limitation of ecological pyrami
Doesn’t take into account the same species belonging to different trophic levels
Does a simple food chain exist in nature?
Nooo.. it doesn’t..
Ecological pyramids do not accommodate food webs
Who are not given any place in the pyramid
Saprophytes
More than one trophic level
Food web
Parasites
Which pyramid is always upright
Energy
Can a given organism occupy different trophic levels SIMULTANEOUSLY
yessir
Who has tried to put price tags on nature’s life support services
Robert Constanza
Mention two important structural features of ecosystem
Species composition and stratification
Rate of organic matter stored by producers in their bodies per unit time and area is called
Npp net primary productivity
Energy of sun is fixed and trapped in c-c bonds… This explains which law
First law of thermodynamics
State true or false.. lichens secrete weak acids
TRUE
True or false?
In hydrach succession scrub stage is preceded by forest community
FALSE
Wat percentage of incident Solar radiation is captured in photosynthesis
1-5%
Give statements about first order consumers
They are key industry animals
Convert plant matter into animal matter
They directly feed on producers
Who are the key industry animals?
First oder consumers (T2 trophic level)
Initial seral stages in succession posses low diversity
True
Wat % of PAR can be captured by plants
2-10%
Mineralisation is performed by
Saprophytic bacteria and fungi
Major site of decomposition in the soil and water bodies is
Upper layer in soil and bottom layer on water
Functional aspect of ecosystem includes
Energy flow
Decomposition
Nutrient cycling
Biotic succession
Ecosystem development
Structure of ecosystem includes
Species composition
Stratification
Standing crop
Standing state/ standing quality
During primary succession on rocks pioneer species are?
Lichens
Decomposition is
Aerobic
The pyramid of number is upright in
Grassland and pond ecosystem
Humus is an
Amorphous more or less decomposed organic matter
In hydrach succession total biomass and hummus content of soil
INCREASES
In which process of decomposition there is no direct involvement of living organisms
Leaching
