Question

Question 124 pts

Organic matter decomposes __________ in tropical forests so carbon _____ build up in tropical soil.

Group of answer choices

slowly; does

slowly; does not

rapidly; does

rapidly; does not

Question 134 pts

Which of the following is NOT typical in early succession?

Group of answer choices

narrow niche specialization

emphasis (strategy) on efficiency

eveness of species distribution (few dominants, more co-dominants)

A and B

A and B and C

Question 144 pts

Which statement is most true about energy and nutrients in ecosystems?

Group of answer choices

energy cycles but nutrients flow through

nutrients are transformed from one type to another but energy is remains constant

energy is transformed from one type to another and nutrients can be recycled

energy is stored yet nutrients are lost

Question 154 pts

Each tier of a biomass pyramid depicts the __________ of all the organisms in an ecosystem.

Group of answer choices

size

dry weight

number of species

number of individuals

B or D

Question 164 pts

The __________________ cycle is primarily a sedimentary cycle.

Group of answer choices

phosphorus

carbon

nitrogen

water

Answer 1

Question 124
The tropical rainforest is hot moist biome which is found near the equator of the earth the hot and humid conditions of the tropical rainforest make them ideal environment for bacteria and other microorganisms to grow because of the presence of these organisms active throughout the year the decomposition of the forest floor takes place quickly and the chemical nutrients like carbon and nitrogen are released back into the soil and water.
So organic matter decomposes rapidly in tropical forests so carbon does build up in tropical soil.
Question 134
During the time of early succession there will be a narrow niche specialisation and emphasis on efficiency of using energy.
But, there is no evenness of species distribution during the time of early succession.
Hence third option is the correct answer.
Question 144
Energy can be converted from one form to another form and in the nutrients will be keep getting recycled in a given ecosystem. this is the natural flow of energy and nutrients in the ecosystem.
Hence third option is the correct answer.
Question 154
Biomass is a measure of the total dry mass of organisms in a given area. So each tyre of a biomass pyramid depicts the dry weight of all the organisms in an ecosystem.
Hence second option is the correct answer.
Question 164
Phosphorus moves in a cycle through rocks water soil and sediments and even through organisms also. During the period of long period of time due to rain and weathering of rocks the phosphate ions and other mineral ions are released from rock, soil and sediments.
So phosphorus cycle is the sedimentary cycle.
Hence first option is the correct answer.