Que- Ecological niche of an organism represents
a. The resource it utilizes
b. Functional role in the ecological system
c. The range of conditions that it can tolerate
d. All of these
Answer- All of these
Explanation- The ecological niche of an organism represents the position and the role played by the organism in the ecosystem in which it lives. Here, D is the correct answer.
Que- Frost typically forms on the inside of a windowpane (rather than the outside) because:
a. The inside of the pane is colder than the outside
b. There is more water vapor touching the inside of the pane
c. There is less water vapor touching the inside of the pane
d. None of the above
Answer- There is more water vapor touching the inside of the pane
Explanation- Frost typically forms on the inside of a windowpane (rather than the outside) because: there is more water vapour touching the inside of the pane.
Que- Harnessing of nuclear energy often causes ________ pollution
a. Air
b. Water
c. Thermal
d. Noise
Answer- Thermal
Explanation- Harnessing of nuclear energy often causes thermal pollution.
Que- The heating of earth's atmosphere due to trapped radiation is known as
a. Global warming
b. Glass-House effect
c. Thermal effect
d. Green House effect
Answer- Green House effect
Explanation- Heating of the Earth surface due to radiation of the Sun trapped by carbon dioxide and water vapour in the atmosphere is called as Green house effect.
Que- Aquatic life is damaged by
a. Sound pollution
b. Air Pollution
c. Thermal pollution
d. All of these
Answer- Thermal pollution
Explanation- Aquatic life is damaged by thermal pollution.
Que- Lines connecting points of equal temperature are called:
a. Isobars
b. Isotherms
c. Thermals
d. Thermographs
Answer- Isotherms
Explanation- Lines joining places of equal temperature are called as Isotherms.
Que- World's first Teak Forest was planted in 1842 in Kerala. Identify the place.
a. Wayanad
b. Nilambur
c. Silent Valley
d. Nelliyampathy
Answer- Nilambur
Explanation- The first teak plantations were raised in Nilambur in 1842 by the British. H V Conolly, the Malabar District Collector during the British rule, was instrumental in planting teak in the entire Nilambur area, with the help of Chathu Menon, a forest officer. Now the plantation is named after Conolly.
Que- Pottery workers are at high risk of __________ lung disease.
a. Asbestosis
b. Asthma
c. Silicosis
d. Bronchitis
Answer- Silicosis
Explanation- Pottery workers are at high risk of silicosis lung disease.
Que- The strongest radiation inversions occur when
a. Skies are overcast
b. Skies are partly cloudy
c. Skies are clear
d. Precipitation is falling
Answer- Skies are clear
Explanation- The strongest radiation inversions occur when skies are clear.
Que- The darkening of the skin due to arsenic poisoning is called
a. Black syndrome
b. Diffuse melanosis
c. Skin scaling
d. None of these
Answer- Diffuse melanosis
Explanation- The darkening of the skin due to arsenic poisoning is called diffuse melanosis.
Que- A change of one degree on the Celsius scale is ____ a change of one degree on the Fahrenheit scale.
a. Equal to
b. Larger than
c. Smaller than
d. Is in the opposite direction of
Answer- Larger than
Explanation- A change of one degree on the Celsius scale is larger than a change of one degree on the Fahrenheit scale.
Que- An ecosystem must have continuous external source of
a. minerals
b. energy
c. food
d. All of the above
Answer- energy
Explanation- An ecosystem must have continuous external source of energy.
Que- When number of food chains is interlocked this is called
a. food link
b. food chain
c. food web
d. pyramid
Answer- food web
Explanation- The interlocking pattern of various food chains is referred as food web.
Que- Rain water harvesting is a major method implemented for_____________
a. Water Conservation
b. Soil Conservation
c. Forest conservation
d. Ecological conservation
Answer- Water Conservation
Explanation- Rainwater harvesting has been a popular method of obtaining water for agriculture and for drinking purposes in rural homes. The legislation to promote rainwater harvesting was enacted through the Urban Development Authority (Amendment) Act, No. 36 of 2007.
Que- The pyramid of numbers is inverted in the case of
a. parasitic food chain
b. Grassland ecosystem
c. Forest ecosystem
d. lake ecosystem
Answer- parasitic food chain
Explanation- 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.
Que- Burning of coal produces oxides of sulphur and nitrogen which combined with water vapor leads to
a. acid rain
b. brackish water
c. forest fire
d. soil pollution
Answer- acid rain
Explanation- Burning of coal produces oxides of sulphur and nitrogen which combined with water vapor leads to acid rain.
Que- _________ is an integration of several subjects that include both science and social studies.
a. sociology
b. physiology
c. environmental studies
d. anatomy
Answer- environmental studies
Explanation- Environmental studies is an integration of several subjects that include both science and social studies.
Que- The Primary Consumers are also called as
a. Herbivores
b. Carnivores
c. Enzymes
d. None of these
Answer- Herbivores
Explanation- Primary consumers are animals that eat primary producers; they are also called herbivores (plant-eaters). Secondary consumers eat primary consumers. They are carnivores (meat-eaters) and omnivores (animals that eat both animals and plants).
Que- First Biosphere reserve in India
a. Nilgiri
b. Agastyamala
c. Eravikulam
d. Chinnar
Answer- Nilgiri
Explanation- Nilgiri Biosphere Reserve located in Tamil Nadu, Kerala and Karnataka was the first biosphere reserve established in 1986.
Que- Which among the following result in the formation of soil?
a. Radiation
b. Weathering
c. Erosion
d. Pollution
Answer- Weathering
Explanation- Soil minerals form the basis of soil. They are produced from rocks (parent material) through the processes of weathering and natural erosion. Water, wind, temperature change, gravity, chemical interaction, living organisms and pressure differences all help break down parent material.
Que- The primary source of energy for the earth's atmosphere is:
a. Energy from within the earth
b. The sun
c. Erupting volcanoes
d. Lightning discharges associated with thunderstorms
Answer- The sun
Explanation- The Sun is the primary source of energy for Earth's climate system is the first of seven Essential Principles of Climate Sciences. Principle 1 sets the stage for understanding Earth's climate system and energy balance. The Sun warms the planet, drives the hydrologic cycle, and makes life on Earth possible.
Que- Acid rain contains
a. Sulphuric acid
b. Hydrochloric acid
c. Oxalic acid
d. Acetic acid
Answer- Sulphuric acid
Explanation- Acid rain contains Sulphuric acid.
Que- Water from springs contain dissolved __________ compounds which are used to cure some skin diseases.
a. Nitric
b. Carbon
c. Oxide
d. Sulphur
Answer- Sulphur
Explanation- Water from springs contain dissolved Sulphur compounds which are used to cure some skin diseases.
Que- Which of the following is considered a variable gas in the earth's atmosphere?
a. Water vapor
b. Nitrogen
c. Oxygen
d. Argon
Answer- Water vapor
Explanation- Water vapour is considered a variable gas in the earth's atmosphere.
Que- The limitating factor in temperate and boreal forest is
a. Nutrients
b. Frost
c. Oxygen
d. Sunlight
Answer- Sunlight
Explanation- Due to the older age and species diversity of the temperate forest ecosystems, many grasses and lower lying shrubs have difficulty growing to the breadth of the canopy composed of the taller trees. As a result, little sunlight actually reaches the forest floor, which serves as its own limiting factor.