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Current Affairs January 2024

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4

Which is the correct food chain

A. grass � wolf > deer > buffalo

B. bacteria � grass � rabbit > wolf

C. grass � insect � bird � snake

D. grass > snake �insect � deer

Correct Answer :

C. grass � insect � bird � snake


Related Questions

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One of these is a renewable source of energy:

A. Solar energy

B. Hydro-power

C. Natural gas

D. All of these

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Hydrilla is a

A. suspended hydrophyte

B. submerged hydrophyte

C. floating and anchored plant

D. a free floating hydrophyte

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Desert plants are generally

A. Succulents

B. Heterophyllous

C. Herbaceous

D. Viviparous

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Carbon cycle includes

A. producer - consumer - decomposer

B. decomposer - consumer - producer

C. producer - decomposer - consumer

D. consumer - producer - decomposer

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In grassland ecosystem the pyramid of energy is

A. upright

B. inverted

C. upright or inverted

D. none of these

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Tropical evergreen forests are seen in

A. Himachal Pradesh

B. Haryana

C. Tamil Nadu

D. Assam

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Which one of the following is associated with the conservation of forest ?

A. Bharatpur

B. Kaziranga

C. Silent Valley

D. Gir

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The food chain in which microorganisms break down the energy-rich compounds synthesized by producers is

A. parasitic food chain

B. consumer food chain

C. detritus food chain

D. predator food chain

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Mark which is true

A. A food chain is a chain of food consumers

B. A food chain is chain of food producers

C. A food chain is a series of organisms through which food energy flows in an ecosystem

D. None of the above

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4

The least porous soil among the following is

A. loam soil

B. clay soil

C. sandy soil

D. poeaty soil

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Correct definition of ecosystem is :

A. A community of organisms interacting with one another

B. The abiotic component of a habitat

C. The part of the earth and its atmosphere which inhabits living organisms

D. The community of organisms together with environment in which they live

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Humus is an example of

A. soil structure

B. organic colloids

C. crystalloids

D. none of the above

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Plankton, Nekton and Itenthon are not the components of one of the following ecosystems:

A. Marine

B. Freshwater

C. Grassland

D. Pond

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The source of energy in the ecosystem is:

A. decomposition of animals and plants by bacteria

B. photosynthesis by green plants

C. fermentation of sugars

D. sun-light

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Silent valley is situated in

A. Kashmir

B. Kerala

C. Africa

D. America

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Deforestation may reduce the chances of

A. frequent cyclones

B. rainfall

C. frequent landslides

D. erosion of soil surface

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In cities like Mumbai and Delhi, the major air pollutants are

A. ozone

B. carbon monoxide and oxides of sulphur

C. hydrocarbons and hot air

D. algae spores and marsh gas

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Hie sequence blue green algae > crustose lichens � foliose lichens > mosses � shrubs � dicotyledonous tree represents

A. a food chain

B. genetic drift

C. ecological succession trend

D. a phylogenetic trend

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Hie earliest settlers on barren lands are generally

A. Diatoms

B. Lichens

C. Mosses

D. Ferns

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Commensalism is

A. when both organisms are benefited

B. when one organism is benefited without affecting the other

C. when one organism is affected

D. when both organisms are affected

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What is the major constituent of biomass of an organism

A. Nitrogen

B. Carbon

C. Phospnorus

D. Oxygen

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An area of soil is thoroughly wetted and allowed to drain until capillary movement of water is stopped. The water content of the soil now gives

A. storage water

B. capillary water

C. field capacity

D. gravitational water

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4

Autumn colouration of leaves appears only in

A. Tropical regions

B. Deserts

C. Temperate deciduous plants

D. Deserts

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4

The ultimate source of energy for fish is

A. Protozoa

B. Oxygen produced by plants

C. Sunlight

D. Manure in the soil

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4

Biologists celebrate 5th June as

A. Darwin's birthday

B. World hygiene day

C. World environment day

D. World population day

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An American plant which had become a troublesome weed in India is

A. Typha latifolia

B. Cyperus rotundus

C. Parthenium

D. Eichhornia

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4

Which is the correct food chain

A. grass � wolf > deer > buffalo

B. bacteria � grass � rabbit > wolf

C. grass � insect � bird � snake

D. grass > snake �insect � deer

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4

A habitat of long severe winters and growing season limited to a few months of summer constitutes

A. Taiga ecosystem

B. Tundra ecosystem

C. Savannah ecosystem

D. Tropical rainforest

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The nitrifying bacteria which oxidise nitrite to nitrates include

A. Nitrosomonas

B. Azotobacter

C. Nitrobacter

D. Closteridium

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The best indicator of SO^2 pollution is

A. Lichens

B. Algae

C. Fungus

D. Fems