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ch3studyguide
| Question | Answer |
|---|---|
| which part of the water cycle is a biological process | Transpiration |
| Why cant the producers in some ecosystems make an unlimited supply of organic material | One or more nutrients are in short supply |
| The branch of biology dealing with interactions among organisms and between organisms and there environment is called _____ | Ecology |
| Which is an example of how biotic and abiotic factors interact | Tree roots split apart rocks in the ground |
| Because of biogeochemical cycling | nutrients are circulated throughout the biosphere |
| Each of the following is an abiotic factor in the environment except ______ | Plant life |
| A word the means the same thing as consumer is _____ | Heterotroph |
| Matter can recycle through the biosphere because _____ | Biological systems do not use up matter they transform it |
| One 10% of the energy stored in an organism can be passed on to the next trophic level. of the remaining energy sum is used for the organisms life processes and the rest is _____ | Eliminated as heat |
| What is at the base of all ecological pyramids | Producers |
| Plants are _____ | Primary producers |
| How do most primary producers make there own food | By using light energy to make carbohydrates |
| Carbon cycles throughout the biosphere in all of the following processes exist ______ | Transportation |
| The repeated movement of water between earths surface ad the atmosphere is called _____ | The water cycle |
| In what way are herbivores and carnivores alike | They both obtained energy by consuming other organisms |
| The amount of living tissue within a given trophic level is called the ______ | Biomass |
| The simplest grouping of more than one kind of organism in the biosphere is _____ | A community |
| Nitrogen fixation is carried out primarily by______ | Bacteria |
| The lowest level of environmental complexity that includes living and nonliving factors is the _____ | Ecosystem |
| What animals eat both producers and consumers | Omnivores |
| Organisms need nutrias in order to | Carry out essential life functions |
| What is the term for each step in the transfer of energy and matter within a food web | Trophic level |
| A bird stakes kills and then eats an insect. Based on its behavior which pair of ecological terms describes the bird | Carnivore, consumer |
| Which of the following descriptions about the organization of an ecosystem is correct | Species make up population which make up communities |
| What are 3 kinds of ecological pyramids | energy biomass and numbers |
| Compared to land the open oceans ______ | Are nutrient pore environments |
| Animals get the most of the nitrogen they need ____ | By consuming plants or other animals |
| Which of the following is not a basic method used by ecologist to study the living world | Animal training |
| The algy at the beginning of the food chain in figure 3-1 are ____ | Primary producer |
| _________is important for eco systems because it is used by plants during photosynthesis | Carbon dioxide |
| Animals that feed on plants are called _________ | consumers |
| Scientist classify the nitrogen carbon phosphorite and water cycles as _________ | biogeochemical cycles |
| In an ecological pyramid the biomass of living things _________at each higher level | decreases |
| A lake that is protected from receiving the runoff from a cultivated field is more likely to remain a__________ | healthy ecosystem |
| In a 4 level energy pyramid if the first level contains 5000 calories of energy the third level with contain approximately _____ calories | 50 |
| In figure 3-1 small fishes squid and sharks are ____ but zoplankton are not | Predators |
| Autotrophs capture energy from sunlight or ____ to produce food | Chemicals |
| The use of radio tags satellites and microscopes are all techniques employed in the basic ecological research method of _____ | Observing |
| Suppose extra nitrogen where add to the ecosystem in which the organisms in the figure live. The____ population would increase almost immediately | algy |
Created by:
amgrace