Keystone Species Study guides, Revision notes & Summaries

Restoration of the Everglades ecosystem will depend mostly on ___. - Reducing phosphorus levels Because of the bushmeat industry various species of ___ are particularly in jeopardy. - Primates Sulfur dioxide is found in the __________ - atmosphere Denitrification occurs in the absence of __________. - Oxygen Asian swamp eels are good invaders in Florida as they can ________. - Survive in shallow water The two principal species of salt marsh plants n Florida are ___________ and ___________. ...

AP Biology Exam Questions and Answers Graded A+ Ligands A molecule that binds specifically to a receptor site of another molecule. Local Regulators A secreted molecule that influences cells near where it is secreted. Biotic Describes living factors in the environment. Abiotic Non-living things keystone species a species on which other species in an ecosystem largely depend, such that if it were removed the ecosystem would change drastically. analogous structures ...

Apes Final11) In general, successfully introduced species experience ________. A) increased environmental resistance B) competitive success against native species C) increases in limiting factors D) increased competition from other organisms E) decreased biotic potential - correct answer B.) Competitive success against native species 12) Bullfrog tadpoles are often sold as fish bait, even in areas where they do not occur naturally. When people buy 10 of them and don't use them all, they...

Elements that organisms require to grow and reproduce correct answer: Hydrogen, Carbon, Nitrogen, Oxygen, Phosphorus, and Sulfur Similarities in arm structures of animals result from what factors ... correct answer: Certain bones are similar because all of these animals are mammals with a shared common ancestor. These bones and limbs are actually very different with different uses. Shared features in many organisms results from ... correct answer: shared common descent and evoluti...

What is the relationship between energy incoming to the Earth from the sun and the size of a food web? A. Less incoming energy, more diverse food web B. No relationship C. More incoming energy, less diverse food web D. Greater energy, greater food web - Answer-D. Greater energy, greater food web What is the most important thing that allows ecosystems to function? A. Atmosphere B. Water C. Soil D. Energy - Answer-D. Energy An ecosystem is defined as... A. the sum of living organisms a...

Species evenness is an important measure of diversity in an ecosystem. T/F correct answer: true When a tapeworm steals nutrients from the gut of a mammalian host, that symbiosis is called: intraspecific competition. parasitism. commensalism. mutualism. predation. correct answer: parasitism Based upon the age structure diagram, you expect the American population to: grow because all of the age classes have roughly equal proportions of people. grow then shrink because many of th...

he world, in the US - 5500, 965 Number of threatened/endangered mammal species - 1000 What separates mammals from birds, reptiles, and amphibians - Mammals have hair, mammary glands, and three ear bones. What distinguishes birds from mammals, reptiles, and amphibians - Feathers Number of species of birds in the world, in North America, in the US - 9900, 2000, 925 Number of threatened/endangered bird species - over 1000 Number of reptile species in the world - 8200 Number of reptile speci...

ASU BIO 182 Exam 3 Latest Update Graded A+ biodiversity the variety of life in the world or in a particular habitat or ecosystem Cambrian explosion animal body plans evolved in a brief period carrying capacity the number of people, other living organisms, or crops that a region can support without environmental degradation Coevolution reciprocal evolution of two or more species. single species evolves in response to another group of species colonization Invasion of new region...

Bio 182 Exam 3 Questions with Correct Answers 100% Verified 1. The population reached its carrying capacity in 2007. - Correct Answer False During , the number of births likely exceeded the number of deaths. - Correct Answer True Between 1996 and 1999, the death rate in the population could have exceeded the birth rate if immigration from other populations increased greatly. - Correct Answer True Between 1988 and 2007, the rate of death could have exceeded the rates of birth and immigr...

Elements that organisms require to grow and reproduce - Correct Answer Hydrogen, Carbon, Nitrogen, Oxygen, Phosphorus, and Sulfur Similarities in arm structures of animals result from what factors ... - Correct Answer Certain bones are similar because all of these animals are mammals with a shared common ancestor. These bones and limbs are actually very different with different uses. Shared features in many organisms results from ... - Correct Answer shared common descent and evoluti...