BIO 201 Lecture Notes - Lecture 12: Transpiration, Ferocactus Wislizeni, Temperate Climate

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silverbutterfly439

29 Jun 2016

School

Stony Brook University

Department

Biology

Course

BIO 201

Professor

John Trueand Ross Nehm

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Document Summary

The movement of energy and nutrients through systems. The sun is the original source of all energy on earth. Energy from producers go to higher trophic levels. Solar radiation is emitted from the sun and passed through the atmosphere and absorbed by the earth"s surface. Some of the solar radiation is however reflected by the atmosphere as well as the earth"s surface. Radiation is converted to heat energy, causing the emission of longwave (infrared) radiation back to the atmosphere. Some of the infrared radiation passes through the atmosphere and out into space. Some of the infrared radiation is absorbed and re-emitted by the greenhouse gas molecules. Productivity: rate of accumulation of energy by organisms. Primary productivity: amount of light energy converted into chemical energy (production of organic compounds) per unit time. Gross primary productivity (gpp): total primary production in a given time (how much photosynthesis) Net primary productivity (npp): total primary productivity stored in organic matter.

Related Questions

11. As energy flows through the food web in an ecosystem, the amount of energy that is transferred from one trophic level to the next trophic level increases. stays the same. decreases. may increase or decrease, depending upon the system.

12. Autotrophs are organisms that obtain energy by breaking down tissues of organisms that have died. harness external energy sources to produce complex chemical compounds. depend directly on primary producers for their energy and nutrients. eat other autotrophs to obtain energy.

13. Which of the following gives the correct order for energy flow through an ecosystem? primary producers â secondary producers â tertiary producers primary consumers â primary producers â secondary producers secondary consumers â primary consumers â primary producers primary producers â primary consumers â secondary consumers

14. Which one of the following aspects of plant biology is not directly involved in maintaining an adequate supply of water for the entire plant? phloem roots xylem transpiration pull

15. Which structure(s) do most plants use to acquire the energy that they need for cellular processes? the roots the leaves the stem

The total amount of energy invested in the production of living biomass in a community is that community's

Select one:

a. gross primary productivity

b. net primary productivity

c. gross photosynthetic efficiency

d. net photosynthetic efficiency

Which of the following factors accounts for the largest number of documented extinctions that have occurred in the last 1,000 years?

Select one:

a. Deforestation

b. Habitat fragmentation

c. Pollution

d. Invasive species

In terrestrial ecosystems, the greatest current cause of species endangerment is

Select one:

a. invasive species

b. habitat loss

c. overharvesting

d. pollution

Carbon dioxide has a warming effect on the earth's atmosphere. This is because it absorbs

Select one:

a. ultraviolet radiation coming from the earth's surface

b. visible light coming directly from the sun

c. ultaviolet radiation coming from the sun

d. infrared radiation coming from the earth's surface

The overall productivity of the open ocean has declined as a result of global warming.This is believed to be because

Select one:

a. ocean stratification has intensified

b. cloud cover has increased, reducing sunlight over the ocean

c. higher temperatures have directly inhibited algal photosynthesis

d. the amount of carbon dioxide dissolved in the ocean has decreased

Positive feedback might occur in response to increasing atmospheric carbon dioxide levels as a result of

Select one:

a. soil decomposers increasing the rate at which they break down organic molecules

b. oceans absorbing more carbon dioxide in the form of bicarbonate ions

c. an increase in the rate at which fossil fuels are formed

d. plants accelerating their growth by taking up more carbon dioxide

Which nitrogen-containing molecules in soil represent a usable source of nitrogen for plants?

Select one:

a. Nitrogenous bases of nucleic acids

b. All of these

c. Ammonium

d. Amino acids

In a tropical forest ecosystem, "edgeâ habitat is considered to be of relatively low quality for conservation purposes because it

Select one:

a. tends to contain more invasive species

b. all of these

c. tends to contain more early-successional species

d. is more exposed to the effects of wind

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BIO 201 Lecture Notes - Lecture 12: Transpiration, Ferocactus Wislizeni, Temperate Climate

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