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33 Cards in this Set
- Front
- Back
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Name several abiotic factors that might affect the community of organisms living inside a home fish tank.
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light, water, temperature and chemicals
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The formation of goose bumps on your skin in cold weather is an example of a _________ response, while seasonal migration is an example of a _________ response.
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physiological, behaviorial
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What 2 values would you need to know to figure out the human population density of your community?
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The number of people and the land area in which they live.
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Pine trees in a forrest tend to shade and kill pine seedlings that sprout nearby. What pattern of growth will this produce?
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uniform
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A uniform dispersion pattern for a population may indicate that
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there is an absence of strong attractions or repelsions among individuals
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With regard to its percent increase, a population that is growing logistically grows fastest when the density is __________ compared to carrying capacity.
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intermediate
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Which of the following shows the effects of a density -dependent limiting factor?
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Rabbits multiply and their food supply begins to dwindle.
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Skyrocketing growth of the human population since the beginning of industrial revolution appears to be mainly a result of
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a drop in the death rate due to better nutrition and health care
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The concept of trophic structure of a community emphasizes the
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feeding relationships within a community.
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Match each organism with its trophic level
detritivore producer tetiary consumer secondary consumer primary consumer |
fungi
alga eagle eagle grasshopper |
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According to the concept of competitive exclusion
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two species cannot share the same niche in a community
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How can a keystone predator help maintain species diversity within a community?
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by preying on the dominant competitor
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Match the defense mechanism with the term that describes it.
Batesian Warning coloration Camouflage coloration Mullerian mimicry |
Harmless beetle that resembles a scorpion,
bright markings of a poisonous tropical frog, mottled coloring of moths that rest on lichens, 2 poisonous frogs that resemble each other in coloration |
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Over a period of of many years, grass grows on a sand dune, then shrubs grow, and then eventually trees grow. This is an example of ecological____________.
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Succession
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Local conditions, such as heavy rainfall or removal of plants, may limit the amount of nitrogen , phosphorus, or calcium available to a particular ecosystem, but the amount of carbon available to the system is seldom a problem. Why?
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Many nutrients come from the soil, but carbon comes from the air.
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We are on a coastal hillside on a hot, dry summer day among evergreen shrubs that are adapted to fire. We are most likely standing in a __________ biome.
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chaparral
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In volume, which biome is largest?
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pelagic zone of the oceans
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A pea pod is formed from an _______. A pea inside the pod is formed from an _______.
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ovary, ovule
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What plant features will assist in determining if a plant is a dicot or a monocot?
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number of seed leaves, shape of root system, number of petals, arrangement of vascular bundles in its stem
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Match the flower structure with the function.
petal ovule sepal pollen grain anther ovary |
attracts pollinators,
develops into seed, protects an unopened flower, produces sperm, produces pollen, contains ovules |
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What part of the plant are you eating when you consume the following?
tomato celery stalk green bean lettuce beet |
ripened ovary,
leaf stalk (petiole), ripened ovary, leaf, root |
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Name three types of asexual reproduction found in plants. What advantage for the plant might asexual reproduction have over sexual reporduction? What are some disadvantages?
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Bulbs, root sprouts, and runners are examples.
Advantage- propagates exact copies of well adapted plant. Disadvantage- less able to tolerate environmental changes. |
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In angiosperms, each pollen grain produces 2 sperm. What do these sperm do?
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One fertilizes an egg, and the other fertilizes a cell that develops into stored food.
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In the angiosperm lefe cycle, which of the following processes is directly dependent on meiosis?
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production of spores
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Which of the following is closest to the center of a woody stem? Which is the farthest from the center?
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cork cambium, primary xylem
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A gardener is concerned that his perennial plants are not growing well. He notes that the stems are thickening adequately over the years. This suggests reduced activity of which plant tissue?
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vascular cambium
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Which of the following activities of soil bacteria does not contribute to creating usable nitrogen supplies for plant use?
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the assembly of amino acids into proteins
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Plants transport 2 types of sap ________ sap, a solution of mostly water and sucrose, is transported from sites of sugar production to other parts of the plant. __________ sap, a solution of mostly water and inorganic ions, is transported from the roots to the rest of the plant body.
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phloem, xylem
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Auxin causes a shoot to been toward light by
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stimulating growth on the dark side of the shoot
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Match the following hormones to its primary role in a plant.
Auxin Ethylone Cytokinins Gibberellins Abscisic acid |
stimulates or inhibits the elongation of shoots and roots,
hastens fruit rippening, promotes cell division, promotes fruit development, inhibits seed germination |
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The hormone that promotes leaf dropping in fall and fruit ripening is
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ethylene
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Buds and sprouts often form on tree stumps as a result of the action of the hormone
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cytokinins
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Match the following terms to their meanings.
Gravitropism photoperiod phototropism thigmotropism |
relative lengths of night and day,
growth response to gravity, growth rsponse to touch, growth response to light. |
