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Biology MID!
| Question | Answer |
|---|---|
| Which of the following descriptions about the organization of an ecosystem is correct | species are grouped in populations, which make up communities |
| The simplest grouping of more than one kind of organism in the biosphere is a | community |
| which ecological inquiry method is an ecologist using when he or she enters an area periodically to count population | observing |
| The algae at the beginning of the food chain in figure 3-1 are | producers |
| An organism thats uses energy to produce its own food supply from inorganic compounds is called | autotroph |
| Which of the following does NOT require sunlight to live | chemosynthetic bacteria |
| the total amount of living tissue within a given trophic levels is called | biomass |
| what animals eat both producers and consumers | omnivores |
| A snake that eats a frog that has eaten an insect that fed on a plant is | third-level consumer |
| the tropic level in figure 3-2 illustrate | the relative number of individual organisms |
| only 10 % of the energy stored in an organism can be passed on to the next trophic level, of the energy some is used for life process and the rest is | eliminated as heat |
| what is the process by which bacteria convert nitrogen gas in the air to ammonia | nitrogen fixation |
| carbon cycles through the biosphere in all the following EXCEPT | transpiration |
| the movements of energy and nutrients through living systems are different because | energy flows in one direction and nuttiest recycle |
| which is most likely to be a limiting nutrient in a freshwater pond | phosphorus |
| the branch of biology dealing with interactions among organisms and between organisms an their environment | ecology |
| what is the combined portions of earth called in which all living things exist | biosphere |
| all of members of a particular species that liv in the same area are called | population |
| is NOT a basic method used by ecologist | classifying |
| green plants are | producers |
| what is the original source of almost all energy in most ecosystems | sunlight |
| an organisms that cannot make its own food is called | heterotroph |
| organisms that obtain nutrients by breaking down dead and decaying plants & animals called | decomposers |
| what is an organism that feeds only on plants | herbivore |
| all the interconnected feeding relationships in an ecosystem make up a food | web |
| which type of pyramid shows the amount of living tissue at each trophic level in an ecosystem | a biomass pyramid |
| the related movement of water between earth's surface and the atmosphere is called | the water cycle |
| nitrogen fixation is carried out primarily by | bacteria |
| Organisms need nutrients in order to | carry out essential life functions |
| the rate at which organic matter is created by producers in a ecosystem | primary productivity |
| offspring that result from coerces between true-breeding parents with different traits | are called hybrids |
| mendel concluded that traits are | inherited through the passing of factors from parents to offspring |
| when me del crossed true-breeding tall plants with true-breeding short plants, all the offspring were tall because | the allele for tall plants is dominant |
| in the P generation, a tall plant aaas crossed with a short plant, short plants reappeared in the F@ gen b/c | the allele for shortness and the allele for tallness segregated when the F1 plants produced gametes |
| the principles of probability can be used to | predict the traits of the offspring produced by genetic crosses |
| a punnet square shows all of the following except | the actual results of a genetic cross |
| how many different aloe combinations would be found in the gametes produced by a pea plant whose genotype was RrYY | 2 |
| a cross of white hen with a black rooster produces erminette color offspring. this type of inheritance is known as | codominance |
| which of the following statements about thomas hunt morgan is true | morgan chose to use fruit flies in his study of genetics because fruit flies produce large offspring |
| if an organism diploid number is 12 its haploid number is | 6 |
| figure11-1 | crossing-over |
| chromosomes form tetrads during | prophase of meiosis I |
| Unlike mitosis, meiosis results in the formation of | four genetically different haploid cells |
| linked genes | are on the same chromosome |
| if two genes are on the same chromosome and rarely assort independently | the genes are probably located close to each other |
| mendel used pea plants to study | the inheritance of traits |
| what are mender's factors called today | genes |
| the principle of dominance states that | some alleles are dominant and others are recessive |
| two plants with the genotypes TT Tt | would have the same phenotype |
| organism that have 2 identical ales for a particular trait are said ti be | homozygous |
| what principle states that during gamete formation genes for different traits separate without influencing each other's inheritance | principle of independent assortment |
| The pun net square in 11-5 shows that the gene for pea shape and gene for pea color | assort independently |
| Situations in which one allele for a gene is not completely dominant over another allele for that gene are called | incomplete dominance |
| menders principle of genetics apply to | all organisms |
Created by:
shannonrayy