Que- Green revolution is associated with _________
a. sericulture
b. agriculture
c. fish culture
d. silviculture
Answer- agriculture
Explanation- The Green Revolution in India refers to a period of time when agriculture in India changed to an industrial system due to the adoption of modern methods and technology such as high yielding variety (HYV) seeds, tractors, pump sets, etc. Green revolution was started by Dr. M.S. Swaminathan.
Que- The presence of high coliform counts in water indicates
a. contamination by human wastes
b. phosphorus contamination
c. decreased Biological Oxygen Demand
d. hydrocrbon contamination
Answer- contamination by human wastes
Explanation- The presence of high coliform counts in water indicate contamination by human wastes. Coliform bacteria or Escherichia coli is a bacteria that is present in human intestine. It is a useful bacteria. When people discharge fecal matter near water bodies these microorganisms enter water.
Que- As it travels along the food chain, the concentration of DDT
a. increases
b. remains constant
c. decreases
d. fluctuates randomly
Answer- increases
Explanation- As it travels along the food chain, the concentration of DDT increases.
Que- Industrial melanism is an example of
a. protective resemblance with the surrounding
b. drug resistance
c. defensive adaptation of skin against UV radiations
d. darkening of skin due to industries
Answer- darkening of skin due to industries
Explanation- Industrial melanism refers to the evolution of dark body colours in animal species that live in habitats blackened by industrial soot. The phenomenon has been documented in numerous species that hide from predators by blending in with their backgrounds. Peppered moths provide one example.
Que- Coal is a __________ resource.
a. abiotic
b. inorganic
c. deforestation
d. none of the above
Answer- deforestation
Explanation- Coal is a deforestation resource.
Que- Extensive planting of trees to increase forest cover is called
a. Afforestation
b. Agroforestry
c. Deforestation
d. Social forestry
Answer- Afforestation
Explanation- The process of extensive planting of trees or seeds in barren lands to increase forest cover is called as Afforestation.
Que- Which tree is known as Coral tree?
a. Quercus
b. Dipterocarps
c. Erythrina
d. Zizypus
Answer- Erythrina
Explanation- Coral tree (Erythrina variegata L.) is a spreading tropical and subtropical tree legume, renowned as an ornamental for its conspicuous red blossoms. In India, it is one of the most used forage tree legume used as fodder for small ruminants (Devendra, 1989). It is often used as an hedgerow and windbreak.
Que- The components of LPG are _____________
a. Methane & Hexane
b. Propane & Butane
c. Ethane & Methane
d. Propane & Ethane
Answer- Propane & Butane
Explanation- Liquefied Petroleum Gas or LPG (also called Autogas) consists mainly of propane, propylene, butane, and butylene in various mixtures. It is produced as a by-product of natural gas processing and petroleum refining. The components of LPG are gases at normal temperatures and pressures.
Que- Biogas is composed of
a. methane, carbon dioxide, nitrogen and hydrogen
b. carbon dioxide, nitrogen and hydrogen
c. ethane, carbon dioxide, nitrogen and hydrogen
d. methane, carbon dioxide, nitrogen and sulphur
Answer- methane, carbon dioxide, nitrogen and hydrogen
Explanation- Biogas differs from natural gas in that it is a renewable energy source produced biologically through anaerobic digestion rather than a fossil fuel produced by geological processes. Biogas is primarily composed of methane gas, carbon dioxide, and trace amounts of nitrogen, hydrogen, and carbon monoxide.
Que- _________ mixed with diesel reduces carbon monoxide emissions up to 50%.
a. Methanol
b. Alcohol
c. Ethanol
d. Phenol
Answer- Ethanol
Explanation- Ethanol mixed with diesel reduces carbon monoxide emissions up to 50%.
Que- Fungi is/are
a. single-celled prokaryotes
b. Phototrophic eukaryotes
c. Eukaryotes single-celled and primitive multi-celled organisms
d. heterotrophic eukaryotes
Answer- heterotrophic eukaryotes
Explanation- A fungus (plural: fungi or funguses) is any member of the group of eukaryotic organisms that includes microorganisms such as yeasts and molds, as well as the more familiar mushrooms. These organisms are classified as a kingdom, which is separate from the other eukaryotic life kingdoms of plants and animals.
Que- If you want to keep an object cool while exposed to direct sunlight,
a. Put it inside a brown paper bag
b. Wrap it in black paper
c. Wrap it in aluminum foil with the shiny side facing inward
d. Wrap it in aluminum foil with the shiny side facing outward
Answer- Wrap it in aluminum foil with the shiny side facing outward
Explanation- If you want to keep an object cool while exposed to direct sunlight, wrap it in aluminum foil with the shiny side facing outward.
Que- Man and biosphere programme is affiliated with
a. UNESCO
b. IUCN
c. WWF
d. WIPO
Answer- UNESCO
Explanation- Man and the Biosphere Programme (MAB) is an intergovernmental scientific programme, launched in 1971 by UNESCO, that aims to establish a scientific basis for the improvement of relationships between people and their environments.
Que- Succession initiated on large sand deposits or deserts is called
a. Hydrosere
b. Psammosere
c. Xerosere
d. Oxylosere
Answer- Psammosere
Explanation- Succession initiated on large sand deposits or deserts is called Psammosere.
Que- The famous Minamata disease in Japan is due to the accumulation of____________in fishes.
a. Cadmium
b. Mercury
c. Zinc
d. Lead
Answer- Mercury
Explanation- Minamata disease, which can induce lethal or severely debilitating mental and physical effects, was caused by methylmercury‑contaminated effluent released into Minamata Bay by Chisso, Japan's largest chemical manufacturer. It resulted in widespread suffering among those who unknowingly ate the contaminated fish.
Que- All are insitu conservation efforts except
a. National parks
b. Sanctuaries
c. Zoo
d. biosphere reserves
Answer- Zoo
Explanation- All are insitu conservation efforts except zoo.
Que- Which of the following is the best indicator of SO2 pollution.
a. bryophyte
b. pteridophyte
c. lichen
d. algae
Answer- lichen
Explanation- Lichens are the best indicator of environmental pollution mainly SO2.
Que- The term " latent " means:
a. Late
b. Hot
c. Light
d. Hidden
Answer- Hidden
Explanation- The term " latent " means: existing but not yet developed or manifest; hidden or concealed.
Que- Biotic potential is counteracted by
a. Competition with other organisms
b. Producer is the largest
c. Limitation of food supply
d. None of the above
Answer- None of the above
Explanation- None of the above
Que- What is Bagasse? What is it used for?
a. Sugar cane waste --used as to make paper
b. Biogas -- used as fuel
c. Liquid waste --used as fertilizer
d. Vermi compost - used as fertilizer
Answer- Sugar cane waste --used as to make paper
Explanation- Bagasse is the dry pulpy fibrous residue that remains after sugarcane or sorghum stalks are crushed to extract their juice. It is used as a biofuel for the production of heat, energy, and electricity, and in the manufacture of pulp and building materials.
Que- Red Data Book Provides data on
a. Red flowered plants
b. Red colored fishes
c. Lists of plants and animals
d. Endangered plants and animals
Answer- Endangered plants and animals
Explanation- The Red data book is the state document established for documenting rare and endangered species of animals, plants and fungi. This book provides central information for studies and monitoring programmes on rare and endangered species and their habits.
Que- What is Dendrology?
a. Study of Plants
b. Study of Butterflies
c. Study of Trees
d. None of these
Answer- Study of Trees
Explanation- The scientific study of trees is called dendrology.
Que- In which of the following the maximum plant diversity is found
a. Tropical evergreen forests
b. Tropical moist deciduous forests
c. Sub tropical mountain forests
d. Temperate moist forests
Answer- Tropical evergreen forests
Explanation- Species diversity is greatest in the tropics, particularly in tropical forests and coral reefs. The Amazon basin in South America has the largest area of tropical forests.
Que- When water changes from a liquid to a vapour, we call this process:
a. Freezing
b. Condensation
c. Sublimation
d. Evaporation
Answer- Evaporation
Explanation- Evaporation is the process by which water changes from a liquid to a gas or vapour. Evaporation is the primary pathway that water moves from the liquid state back into the water cycle as atmospheric water vapour.
Que- The area to which a species is biologically adapted to live is known as ________
a. Niche
b. Habitat
c. Succession
d. Community
Answer- Habitat
Explanation- Habitat can be defined as the natural environment of an organism, the type of place in which it is natural for it to live and grow.