If both statments are TRUE , mark \" A \" on answer sheet If either statments is

Question

If both statments are TRUE, mark "A" on answer sheet

If either statments is FALSE, mark "B" on answer sheet

If both statments are FALSE, mark " C" on answer sheet

nto structor CHAPTER 21a. Tropical rain forests cover about 2% of the Earth's land surface, and contain about 2% of th 21b. The outermost layer of the atmosphere is the troposphere. of the Earth biodiversity 22a. Oxygen is the most abundant gas in the atmosphere. 22b. Complex arrangements of feeding patterns in ecosystems are best described as food webs. ny co 23a. Ozone, a gaseous Oj molecule that filters out harmful UV radiation is found in the stratosphere. 23b. Ecologists study interactions within and among the five levels of organizations of cell, atom, molecule, organism, and biosphere. 24a. Bacteria and fungi are typically categorized as decomposers in an ecosystem. 24b. Process of photosynthesis is best shown as carbon dioxide + water + solar energyglucose+ oxygen. 25a. A grizzly bear eating blueberries is best categorized as tertiary consumer 25b. Autotrophs are also known as consumers. 26a. Organisms that feed on both plants and animals are called omnivores Animals the break down bodies of dead plants and animals into nutrients that are released into the soil or water are called detritivores. 27a. The process that results in alcoholic beverages is anaerobic respiration. 27b. A hawk would be considered a tertiary consumer 28a. If the producers in an ecosystem capture 40,000 energy units, assuming average efficiency of energy 28b. Net primary productivity is usually reported as the energy output of a specified area of producers over a transfer, 4,000 energy units can likely be successfully converted into secondary consumer biomass. given time. 29a. Nitrogen makes up approximately 85% of the volume of the atmosphere. 29b. The biogeochemical cycle of carbon does not include the atmosphere as a temporary reservoir. 30a. Ammonium ions are converted to nitrite ions and nitrate ions through the process of denitrification. 30b. Decomposers or detritus feeders are essential to us because they eat waste and recycle nutrients.

Explanation / Answer

21) C ( both statement is false)

Tropical forests cover less than 7% of the earth’s surface they are home to approximately 50% of all living things on earth.

The exosphere is the outermost layer of Earth's atmosphere

22) B ( one statement is false (22a)

Nitrogen is the most abundant gas in the atmosphere

Complex arrangements of feeding patterns in ecosystems are best described as food web

23) B (one statement is false 23b)

Ozone is found in the stratosphere

Ecologists study interactions within and among which five levels of organizationorganism, population, community, ecosystem, and biosphere

24) A ( Both statement are true)

Bacteria and fungi are typically categorized as decomposer

Photosynthesis is described as chemical reaction --- Carbon dioxide+Water+Solar Energy--> glucose+oxygen

25) C ( Both statements are false)

A grizzly bear eating blueberries is best categorized as Primary consumer.

Autotrophs are also known as producers

26) A (Boths the statement are true)

Organisms that feed on both plants and animals are called omnivores

A detritivore is an animal that feeds on dead organisms (living things) and breaks them down into smaller molecules and adds to soil

27) A ( Both the statements are true)

Alcoholic fermentation – In this type of anaerobic respiration, glucose is split into ethanol, or ethyl alcohol

Hawk is a tertiary consumer.

28) B ( one statement is false 28b)

If producers in an ecosystem capture 40,000 units of energy assuming average efficiency of energy transfer, 4000 energy unit is converted into secondary consumer biomass

Net primary production is the rate at which all the plants in an ecosystem produce net useful chemical energy. Gross primary production (GPP) is the amount of chemical energy as biomass that primary producers create in a given length of time.

29) C ( Both statement are false)

nitrogen is 78% by volume of Earth's atmosphere.

phosphorous biogeochemical cycles does not include the atmosphere as a temporary reservoir

30) B( one statement is false (30a)

Nitrification : It is the process of conversion of ammonia to nitrites.Denitrification is a microbially facilitated process where nitrate is reduced and ultimately produces molecular nitrogen(N2) through a series of intermediate gaseous nitrogen oxide products.

The role of decomposers in energy transfer within the ecosystem. And just as importantly, they aid in the recycling of an abundance of nutrient.

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