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Puucho STATIC QUIZ 2020 – 21
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Question 1 of 5
Consider the following statements regarding Temperate Deciduous Biome
- They are found in areas with warm moist summers and cool winters.
- Soils of temperate forests are podozolic and fairly deep.
- The trees shed their leaves in the summer season.
Which of the above statements is/are correct?
CorrectSolution: b)
Temperate deciduous or temperate broad-leaf forests are a variety of temperate forest ‘dominated’ by trees that lose their leaves each year. They are found in areas with warm moist summers and cool winters. Soils of temperate forests are podozolic and fairly deep.
The trees shed their leaves in the cold season. This is an adaptation for protecting themselves against the winter snow and frost.
IncorrectSolution: b)
Temperate deciduous or temperate broad-leaf forests are a variety of temperate forest ‘dominated’ by trees that lose their leaves each year. They are found in areas with warm moist summers and cool winters. Soils of temperate forests are podozolic and fairly deep.
The trees shed their leaves in the cold season. This is an adaptation for protecting themselves against the winter snow and frost.
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Question 2 of 5
Consider the following statements.
- Fungai gain their biomass by producing food by themselves like autotrophs do.
- Lichens located in tundra climates are an example of a primary producer.
Which of the above statements is/are correct?
CorrectSolution: b)
Fungi and such other oxidize biomass and thus called decomposers and are not primary producers. They gain their biomass from oxidizing organic materials and not producing food by themselves like autotrophs do.
However, fungi in other forms, when forming symbiotic relation with algae can become primary producers.
For e.g. lichens located in tundra climates are an exceptional example of a primary producer that, by mutualistic symbiosis, combine photosynthesis by algae (or additionally nitrogen fixation by cyanobacteria) with the protection of a decomposer fungus.
IncorrectSolution: b)
Fungi and such other oxidize biomass and thus called decomposers and are not primary producers. They gain their biomass from oxidizing organic materials and not producing food by themselves like autotrophs do.
However, fungi in other forms, when forming symbiotic relation with algae can become primary producers.
For e.g. lichens located in tundra climates are an exceptional example of a primary producer that, by mutualistic symbiosis, combine photosynthesis by algae (or additionally nitrogen fixation by cyanobacteria) with the protection of a decomposer fungus.
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Question 3 of 5
Consider the following statements.
- Sea weeds are potential indicators of pollution in aquatic ecosystem, particularly heavy metal pollution due to their ability to bind and accumulate metals strongly.
- Products like agar-agar and iodine can be extracted from seaweeds.
- Rotting seaweed releases highly toxic gas.
Which of the above statements is/are correct?
CorrectSolution: d)
Sea weeds are macroscopic algae, which mean they have no differentiation of true tissues such as roots, stems and leaves.
- They grow in, shallow coastal waters wherever sizable sub-strata is available.
- Seaweeds are important as food for humans, feed for animals, and fertilizer for plants.
- Seaweeds are used as a drug for goiter treatment, intestinal and stomach disorders.
- Products like agar-agar and alginates, iodine which are of commercial value, are extracted from seaweeds.
- By the biodegradation of seaweeds methane like economically important gases can be produced in large quantities.
- They are potential indicators of pollution in coastal ecosystem, particularly heavy metal pollution due to their ability to bind and accumulate metals strongly.
- Rotting seaweed is a potent source of hydrogen sulfide, a highly toxic gas.
IncorrectSolution: d)
Sea weeds are macroscopic algae, which mean they have no differentiation of true tissues such as roots, stems and leaves.
- They grow in, shallow coastal waters wherever sizable sub-strata is available.
- Seaweeds are important as food for humans, feed for animals, and fertilizer for plants.
- Seaweeds are used as a drug for goiter treatment, intestinal and stomach disorders.
- Products like agar-agar and alginates, iodine which are of commercial value, are extracted from seaweeds.
- By the biodegradation of seaweeds methane like economically important gases can be produced in large quantities.
- They are potential indicators of pollution in coastal ecosystem, particularly heavy metal pollution due to their ability to bind and accumulate metals strongly.
- Rotting seaweed is a potent source of hydrogen sulfide, a highly toxic gas.
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Question 4 of 5
Consider the following statements regarding Phytoplankton.
- Phytoplankton obtain the energy through the process of photosynthesis.
- Phytoplankton depend on B Vitamins for survival.
- They are not found in freshwater eco-systems.
Which of the above statements is/are correct?
CorrectSolution: c)
Phytoplankton are photosynthesizing microscopic biotic organisms that inhabit the upper sunlit layer of almost all oceans and bodies of fresh water on Earth. They are agents for “primary production”, the creation of organic compounds from carbon dioxide dissolved in the water, a process that sustains the aquatic food web.
Phytoplankton are crucially dependent on minerals. These are primarily macronutrients such as nitrate, phosphate or silicic acid, whose availability is governed by the balance between the so-called biological pump and upwelling of deep, nutrient-rich waters.
Phytoplankton depend on B Vitamins for survival.
They are found in all water systems, including marine or brackish or fresh.
IncorrectSolution: c)
Phytoplankton are photosynthesizing microscopic biotic organisms that inhabit the upper sunlit layer of almost all oceans and bodies of fresh water on Earth. They are agents for “primary production”, the creation of organic compounds from carbon dioxide dissolved in the water, a process that sustains the aquatic food web.
Phytoplankton are crucially dependent on minerals. These are primarily macronutrients such as nitrate, phosphate or silicic acid, whose availability is governed by the balance between the so-called biological pump and upwelling of deep, nutrient-rich waters.
Phytoplankton depend on B Vitamins for survival.
They are found in all water systems, including marine or brackish or fresh.
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Question 5 of 5
Which of these factors are responsible for the land degradation in India?
- Improper irrigation use in farms
- Monoculture crops
- Intensive extraction of ground water
- Forest fires
Select the correct answer code:
CorrectSolution: d)
Intensive irrigation of farms depletes groundwater; causes hardening of soil due to higher salinity and water logging leading to soil degradation.
Practice of monoculture does not allow the soil to rotate and conserve crucial minerals as the same minerals and nutrients are depleted in each crop cycle.
Forest fires lead to loss of vegetation, top soil cover, crucial biodiversity like microorganisms and animals thereby degrading the natural balance of the ecosystem, and leads to soil degradation.
IncorrectSolution: d)
Intensive irrigation of farms depletes groundwater; causes hardening of soil due to higher salinity and water logging leading to soil degradation.
Practice of monoculture does not allow the soil to rotate and conserve crucial minerals as the same minerals and nutrients are depleted in each crop cycle.
Forest fires lead to loss of vegetation, top soil cover, crucial biodiversity like microorganisms and animals thereby degrading the natural balance of the ecosystem, and leads to soil degradation.
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