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Neet 2024 > Ecology > Flashcards

Ecology Flashcards

1
Q

Is milk more nutritious than curd

A

No. Curd has more vit B12 coz of presence of lactobacillus bacteria (which converts milk to curd)

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2
Q

The bioactive substance produced by a bacterium and used for the patients undergone myocardial infraction is

A

Streptokinase

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3
Q

Ganga action plan was initiated when? And GAP and YAP were initiated by?

A

GAP- 1985 ..
GAP AND YAP- the ministry of environment and forest

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4
Q

Define mutualism

A

OBLIGATORY mutually beneficial association

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5
Q

Example of mutualism

A

Yucca and pronuba

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6
Q

Sexual deceit is observed between?

A

Ophrys ( an orchid)
And wasp (bumble bee)( colpa aurea)

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7
Q

First census in India?

A

1891.. fir har 10 saal baad

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8
Q

Ozone day?

A

Sept 16

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9
Q

Who are partial regulators

A

Heterotherms

Ex- egg laying mammals. (Platypus)

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10
Q

Vital index of a population is represented by

A

(Natality/mortality)× 100

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11
Q

Does competition benefit someone?

A

No its (- , -)

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12
Q

Wat is brood parasitism

A

Exploitation of nurturing ability
Misnomer
Ex - cuckoo and crow

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13
Q

Resource partitioning is an imp mechanism whic promotes

A

Co-existence

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14
Q

Can competition occur between two unrelated species

A

Yes

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15
Q

To overcome altitude sickness wat adaptions are shown by humans

A

Enhanced RBC production
Decreases in affinity of Hb for oxygen
High breathing rate

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16
Q

Fishes and snails avoid summer related problems by?

A

Aestivation

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17
Q

Praying mantis is a good example of

A

Camouflage

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18
Q

Which type of association is found b/w entomophilous flower and pollinating agent?

A

Co- evolution

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19
Q

According to Darwin organic evolution is due to?

A

Interspecific competition

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20
Q

In lake phytoplankton grow kn abundance in

A

Limnetic zone

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21
Q

Littoral zone is located along

A

Sea

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22
Q

An association of individuals of different species living in the same habitat and having functional interactions is

A

Biotic community

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23
Q

Large woody vines are commonly found in

A

Tropical rainforests

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24
Q

Quercus species is dominant component of

A

Temperate deciduous forests

25
Q

Annual migration does not occur in case of

A

Salamander

(Salmon shoes annual migration )

26
Q

Does coniferous forest has evergreen trees?

A

Yesss

27
Q

The abundance of species population within its habitat is called niche density

A
28
Q

The basic unit of study in ecology is

A

Organism

29
Q

In aquatic ecosystem the limiting factor for productivity is?

A

Light

30
Q

In aquatic ecosystem the limiting factor for productivity is?

A

Light

31
Q

The major reservoir of carbon on earth is?

A

Oceans

32
Q

Which of the following has the largest population in a food chain

A

Decomposers

33
Q

Limitation of ecological pyrami

A

Doesn’t take into account the same species belonging to different trophic levels

34
Q

Does a simple food chain exist in nature?

A

Nooo.. it doesn’t..

Ecological pyramids do not accommodate food webs

35
Q

Who are not given any place in the pyramid

A

Saprophytes

More than one trophic level
Food web
Parasites

36
Q

Which pyramid is always upright

A

Energy

37
Q

Can a given organism occupy different trophic levels SIMULTANEOUSLY

A

yessir

38
Q

Who has tried to put price tags on nature’s life support services

A

Robert Constanza

39
Q

Mention two important structural features of ecosystem

A

Species composition and stratification

40
Q

Rate of organic matter stored by producers in their bodies per unit time and area is called

A

Npp net primary productivity

41
Q

Energy of sun is fixed and trapped in c-c bonds… This explains which law

A

First law of thermodynamics

42
Q

State true or false.. lichens secrete weak acids

A

TRUE

43
Q

True or false?

In hydrach succession scrub stage is preceded by forest community

A

FALSE

44
Q

Wat percentage of incident Solar radiation is captured in photosynthesis

A

1-5%

45
Q

Give statements about first order consumers

A

They are key industry animals
Convert plant matter into animal matter
They directly feed on producers

46
Q

Who are the key industry animals?

A

First oder consumers (T2 trophic level)

47
Q

Initial seral stages in succession posses low diversity

A

True

48
Q

Wat % of PAR can be captured by plants

A

2-10%

49
Q

Mineralisation is performed by

A

Saprophytic bacteria and fungi

50
Q

Major site of decomposition in the soil and water bodies is

A

Upper layer in soil and bottom layer on water

51
Q

Functional aspect of ecosystem includes

A

Energy flow
Decomposition
Nutrient cycling
Biotic succession
Ecosystem development

52
Q

Structure of ecosystem includes

A

Species composition
Stratification
Standing crop
Standing state/ standing quality

53
Q

During primary succession on rocks pioneer species are?

A

Lichens

54
Q

Decomposition is

A

Aerobic

55
Q

The pyramid of number is upright in

A

Grassland and pond ecosystem

56
Q

Humus is an

A

Amorphous more or less decomposed organic matter

57
Q

In hydrach succession total biomass and hummus content of soil

A

INCREASES

58
Q

In which process of decomposition there is no direct involvement of living organisms

A

Leaching

Neet 2024 (9 decks)

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