Questions for 2.1.1
Energy is passed in an ecosystem from one trophic level to the next
What is the 10% rule?
organisms that break down dead or decaying organisms, and in doing so, they carry out the natural process of decomposition
What is decomposers?
a set of metabolic reactions and processes that take place in the cells of organisms to convert biochemical energy from nutrients into adenosine triphosphate and then release waste products
What is cellular respiration?
refers to a close relationship in which one or both organisms obtain a benefit.
What is Symbiosis?
an organism that harbours a parasitic, a mutualistic, or a commensalist guest, the guest typically being provided with nourishment and shelter
What is host?
What is the nitrogen cycle?
an organism that is able to form nutritional organic substances from simple inorganic substances such as carbon dioxide.
What is autotroph?
What is greenhouse effect?
type of relationship where one of the organisms benefits greatly from the symbiosis.
What is Commensalism?
association between organisms of two different species in which each benefits
What is mutualism?
Carbon dioxide leaves the atmosphere through photosynthesis, thus entering the terrestrial and marine biospheres.
What is the Carbon cycle?
an organism deriving its nutritional requirements from complex organic substances.
What is heterotroph?
a chemical substance produced and released into the environment by an animal, especially a mammal or an insect, affecting the behavior or physiology of others of its species.
What is pheromones?
the essential feature of sexual reproduction in zoophilous flowering plants and helps to ensure pollen transfer between flowers of conspecific plants.
What is plant communications with their pollinators?
a relationship between species, where one organism, the parasite, lives on or in another organism, the host, causing it some harm, and is adapted structurally to this way of life
What is parasitism?
important part of many cells and processes such as amino acids, proteinsand even our DNA. It is also needed to make chlorophyll in plants, which is used in photosynthesis to make their food. As part of these life processes, nitrogen is transformed from one chemical form to another.
What is nitrogen important to DNA and protein synthesis?
An autotrophic organism capable of producing complex organic compounds from simple inorganic molecules through the process of photosynthesis
What is producer?
The production and emission of light by an organism
What is bioluminescence?
the resources they need to survive- air, water, food, and space. In areas where these are sufficient, organisms live in comfortable co-existence, and in areas where resources are abundant, the ecosystem boasts high species richness diversity.
What is organisms compete for resources within an environment?
a form of competition in which individuals of different species compete for the same resources in an ecosystem
What is interspecific competition?
used to show the transfer of energy across a process or a device. It is a flow diagram in which the widths of the arrows show the relative amounts of each type of energy.
What is energy diagrams?
An organism that generally obtains food by feeding on other organisms or organic matter due to lack of the ability to manufacture own food from inorganic sources
What is consumer?
chemical signals released by an organism that influence the behavior of another
What is pheromones?
Predator and prey populations cycle through time, as predators decrease numbers of prey. Lack of food resources in turn decrease predator abundance, and the lack of predation pressure allows prey populations to rebound.
What is predator/prey relationships affect population dynamics in an ecosystem?
an interaction in population ecology, whereby members of the same species compete for limited resources
What is intraspecific competition?