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 AIRBORNE allergens

A basidiospore is a reproductive spore produced by Basidiomycete fungi, a grouping that INCLUDES mushrooms, shelf fungi, rusts, and smuts. Basidiospores typically each contain one haploid nucleus that is the product of meiosis, and they are produced by specialized fungal CELLS called BASIDIA

 Sargasso Sea

Because of its STILLNESS and seaweeds on the surface, the Sargasso Sea is a fascinating ECOSYSTEM. MARINE biologists have called it a biological desert, largely DEVOID of plankton, a basic FOOD supply for fish.

 POLY LACTIC ACID

Example for a bio-degradable POLYMER is Poly lactic acid.

 CHERNOBYL in 1986

The worst nuclear ACCIDENT to date was the Chernobyl disaster which occurred in 1986 in Ukraine. The accident killed 31 PEOPLE directly and damaged approximately $7 BILLION of property.

 consumed

In grazer FOOD chain the living PLANTS are DIRECTLY consumed. A SIMPLE food chain as shown in the figure given below, in which energy from the Sun, captured by plant PHOTOSYNTHESIS, flows from trophic level to other trophic level via the food chain.

 FRESH

A pond, SERVES as a good EXAMPLE for a fresh WATER ecosystem.

 40

To begin with, it SHOWS that more than half (58%) of the TOTAL energy produced in the US is wasted due to inefficiencies, such as waste HEAT from POWER plants, VEHICLES, and light bulbs. In other words, the US has an energy efficiency of 42%.

 INTRASPECIFIC COMPETITION

A HIGH density of elephant population in an area can result in intraspecific competition.

 16

If the absolute TEMPERATURE of an OBJECT doubles, the maximum energy EMITTED goes up by a factor of 16.

 ACCUMULATION of salts in SOIL

Salts enter the soil through IRRIGATION; they ORIGINATE either from geological layers, from groundwater or from man-made INFLUENCES, such as fertilizers.
Crops vary in their reaction to soil salinity.

 EDGE effect

The phenomenon of occurrence of additional SPECIES found in the ecotone or transitional zone between ADJOINING ECOSYSTEMS is known as edge effect.

 RIVER SEGMENTS

River segments is the LARGEST in TERMS of SCALE.

 Producers

In a PYRAMID of NUMBERS, in a grassland ECOSYSTEM, the largest population is that of producers.

 O₃ layer

Most commercial FLIGHTS are confined to the troposphere, but high-level supersonic AIRCRAFT inject pollutants into the stratosphere, which leads to the thinning of the ozone layer. Of these nitrogen OXIDES are ESPECIALLY harmful.

 BLACK MAMBA

Black mamba is the WORLD's most DEADLIEST SNAKE.

 caused only by CO₂, CFC, CH₄ and NO₂ gases

The true statement about "green HOUSE EFFECT" is that it is caused only by CO2, CFC, CH4 and NO2 gases.

 Shredders

Shredders are involved in the process of in-stream PHYSICAL breakdown of coarse material into FINE PARTICULATE organic MATTER.

 When the air temperature is highest

Relative humidity is a measure of the WATER VAPOUR content of the air at a GIVEN temperature. The amount of moisture in the air is compared with the maximum amount that the air could CONTAIN at the same temperature and expressed as a PERCENTAGE.

 AFFORESTATION

The PROCESS of extensive PLANTING of trees or seeds in BARREN lands to increase forest COVER is called as Afforestation.

 OCCUPATIONAL HAZARD to the miners

Occupational hazard to the miners is called BLACK LUNG.

 deciduous

Tropical deciduous trees shed their leaves in SUMMERS because the climate BECOMES hot and the leaves automatically become dry and shed off. Moreover they NEED to conserve WATER so that they can SUSTAIN in winters thus they shed their leaves.

 Bacteria

ANTHRAX is a SERIOUS infectious disease caused by gram-positive, rod-shaped bacteria known as BACILLUS anthracis. Anthrax can be found NATURALLY in soil and commonly affects domestic and wild animals around the world.

 POLLUTION

Pollution is any undesirable change in the PHYSICAL, chemical or biological characteristics of AIR, water or LAND. Pollution can harm the health and threaten the survival or activities of human beings and other LIVING organisms.

 Kirchoff's Law

"A good ABSORBER of a given WAVELENGTH of radiation is ALSO a good emitter of that wavelength." This is a STATEMENT of Kirchoff's Law.

 Dew point temperature

The dew point is the temperature to which AIR must be cooled to BECOME SATURATED WITHOUT changing the PRESSURE.

 Gene bank

VIABLE material of endangered SPECIES can be PRESERVED by gene bank. Gene bank is an institute that maintains STOCKS of viable seeds (seed banks), live growing plants (orchards), tissue culture and frozen germplasm with the WHOLE range of genetic variability.

 ACIDIC

Sea WATER is acidic.

 Hydrogen and HELIUM

At its INITIAL formation, the Earth's first ATMOSPHERE was composed PRIMARILY of the light elements hydrogen and helium.

 Green PLANTS

The first trophic level of the FOOD chain is always occupied by green plants which are termed to be producers. This is because producers absorb SUNLIGHT, abiotic factor and fix it into food chain. This energy is TRANSFERRED to organisms in other trophic LEVELS of the food chain.

 Acidic

Normal" RAINFALL is slightly acidic because of the PRESENCE of dissolved carbonic ACID.

 TAJ MAHAL

Monuments that have ALREADY been affected by acid RAIN include the Taj Mahal and the Lotus Temple.

 One-half

At any GIVEN TIME, one-half of the EARTH is ILLUMINATED by the SUN.

 0.28-0.32

Ultraviolet RADIATION which is not LETHAL but HARM to the ORGANISM is 0.28-0.32.

 AGRO forestry

Agroforestry is the integration of TREES and shrubs with open-space agriculture allowing simultaneous, multi-use PURPOSES. Agroforestry is a worldwide PRACTICE since the dawn of FARMING.

 weight

hydrogen PRODUCTION through biological routes is renewable and eco-friendly in nature. NUMEROUS kinds of BIOMASS can be utilized for hydrogen generation

 parasitic food chain

Pyramid of number indicates the number of individuals at each TROPHIC LEVEL. The pyramid of number is inverted in tree ecosystem. In this, the the FIRST trophic level contains LEAST number of trees. The insects feeding on primary producer occupy second trophic level.

 26-Dec-2004

The deadliest TSUNAMI in RECORDED HISTORY TOOK place on 26-Dec-2004.

 Relative HUMIDITY

Relative humidity will increase in a RISING PARCEL of air.

 All of the above

All of the above

 LESS than 4 PERCENT

Typically, water VAPOUR occupies about less than 4 percent of the air's volume near the earth's surface.

 ecotone

An ecotone is a transition area between two biomes. It is where two COMMUNITIES meet and INTEGRATE. It may be NARROW or wide, and it may be LOCAL (the zone between a field and forest) or REGIONAL (the transition between forest and grassland ecosystems).

 All of these

Soaps and DETERGENT are the SOURCES of both organic and inorganic pollutants. These pollutants harm the water BODIES badly. The CORRECT answer is D.

 MARINE POLLUTION

Minamata DISEASE is CAUSED by marine pollution.

 LATENT HEAT

The cold feeling that you experience after leaving a swimming pool on a hot, DRY, summer day represents heat transfer by latent heat.

LESS

 primary productivity

The organic matter PRODUCED by the photosynthetic activity of GREEN PLANTS is CALLED as primary productivity.

 SMALLER

The effect of INTERSPECIFIC COMPETITION on niches is to MAKE them smaller.

 Assam

Small remnants of EVERGREEN forest are found in Odisha state.[D] Semi-evergreen forest is more EXTENSIVE than the evergreen formation PARTLY because evergreen forests TEND to DEGRADE to semi-evergreen with human interference.

 Mercury

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.

 Rainfall

When forests are destroyed, the atmosphere, water bodies, and the water table are all affected. TREES absorb and retain water in their ROOTS. A large part of the water that circulates in the ecosystem of RAINFORESTS REMAINS inside the plants. Some of this MOISTURE is transpired into the atmosphere. When this process is broken, the atmosphere and water bodies begin to dry out. The watershed potential is compromised and less water will run through the rivers. Smaller lakes and streams that take water from these larger water bodies dry up.