Biology
Grade-7
Easy
Question
Taxonomic diversity is the __________________.
- Genetic relationship between different groups of species
- Simple count of species
- Equal abundances of the species
- Group of population in a community
Hint:
Genetic relationship between different groups of species
The correct answer is: Genetic relationship between different groups of species
Taxonomic phylogenetic diversity is the genetic relationship between different groups of species.
It is defined as the mean and variance of the number of species for genus and species per family.
The greater the genetic diversity within a species, the greater is the chance of that species to survive.
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____________ quantifies how equal the abundances of the species are.
____________ quantifies how equal the abundances of the species are.
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Match the following.

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In the container, the contaminants are left behind. After that, the steam is transferred via a condenser, where it cools and returns to liquid water in the process of distillation.
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- Condenser is used to pass steam, where it cools and returns to liquid water in the container.
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Electric water filter consists of ________. (understand)
- Microporous filter contains tiny pores which filter suspended solids from water.
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- Microporous filter contains tiny pores which filter suspended solids from water.
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Pick the odd one out. (analyze)
- All the other options are methods to separate water.
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- All the other options are methods to separate water.
- Only chlorination is the method to purify water.
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Water collected from the river is made free of large pieces of dirt and pumped into reservoirs, then passed to ____________ tank, which helps in forming lumps of particles for their easy removal. (analyze)
- First of all large wastes are removed from water in sewage water treatment.
- Then it is passed to flocculation tanks from water reservoirs to remove impurities in the form of lumps of particles.
Water collected from the river is made free of large pieces of dirt and pumped into reservoirs, then passed to ____________ tank, which helps in forming lumps of particles for their easy removal. (analyze)
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- First of all large wastes are removed from water in sewage water treatment.
- Then it is passed to flocculation tanks from water reservoirs to remove impurities in the form of lumps of particles.
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Analyze the process of water purification in which water is passed through a filter bed to remove all insoluble impurities. (analyze)
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- Filter bed used in water purification have high absorbing and adsorbing capacity.
- It purify the water by removing all insoluble impurities of water.
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B. The water is allowed to settle in a large tank which is sloped towards the middle.
C. Air is pumped into the clarified water to help aerobic bacteria to grow.
D. Wastewater is passed through bar screens. Large objects like plastics, cans, rags, sticks, napkins, etc., are removed.
- Aerobic bacteria helps to remove smallest waste particles from water as they feed on that.
The various stages of cleaning wastewater in a sewage treatment plant are as follows. Select the stages in chronological order. (create)
A. Wastewater goes to a grit and sand removal tank.
B. The water is allowed to settle in a large tank which is sloped towards the middle.
C. Air is pumped into the clarified water to help aerobic bacteria to grow.
D. Wastewater is passed through bar screens. Large objects like plastics, cans, rags, sticks, napkins, etc., are removed.
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- Aerobic bacteria helps to remove smallest waste particles from water as they feed on that.