565154
Pregunta 1
Pregunta
What is the definition of species?
Respuesta
-
a community and its abiotic environment
-
a group of organisms that can interbreed and produce fertile, viable offsrping
-
a group of organisms of the same species in the same area at the same time
-
organisms that live in or on non-living matter, secreting digestive enzymes into it and absorbing the produce from digestion
Pregunta 2
Pregunta
What is a population?
Respuesta
-
a group of organisms of the same species in the same area at the same time
-
the environment a species normally lives or the location of a living organism
-
the study of relationships between living organisms and organisms and their environment
-
a community and its abiotic environment
Pregunta 3
Pregunta
What is ecology?
Respuesta
-
a group of organisms of the same species in the same area at the same time
-
the environment a species normally lives or the location of a living organism
-
the study of relationships between living organisms and organisms and their environment
-
a community and its abiotic environment
Pregunta 4
Pregunta
What is a habitat?
Respuesta
-
a group of organisms of the same species in the same area at the same time
-
the environment a species normally lives or the location of a living organism
-
the study of relationships between living organisms and organisms and their environment
-
a community and its abiotic environment
Pregunta 5
Pregunta
What is an ecosystem?
Respuesta
-
a group of organisms of the same species in the same area at the same time
-
the environment a species normally lives or the location of a living organism
-
the study of relationships between living organisms and organisms and their environment
-
a community and its abiotic environment
Pregunta 6
Pregunta
What is an autotroph?
Respuesta
-
an organism that obtains organic molecules from other organisms
-
an organism that digests non-living matter
-
an organism that synthesises organic molecules as its food source
-
an organism that obtains food by feeding on living/recently killed matter
Pregunta 7
Pregunta
What is a heterotroph?
Respuesta
-
an organism that obtains food by feeding on living/recently killed matter
-
an organism that obtains organic molecules from other organisms
-
an organism that synthesises organic molecules as its food source
-
an organism that ingests non-living matter
Pregunta 8
Pregunta
What is a detritivore?
Respuesta
-
an organism that ingests non-living matter
-
an organism that obtains food by feeding on other organisms
-
an organism that lives on/in non-living matter, secreting digestive enzymes into it and absorbing the produce from digestion
-
an organism that synthesises organic molecules for it food source
Pregunta 9
Pregunta
What is a saprotroph?
Respuesta
-
an organism that lives on/in non-living matter, secreting digestive enzymes into it and absorbing the produce from digestion
-
an organism that ingests non-living matter
-
an organism that obtains organic molecules from other organism
-
an organism that obtains food by feeding on living/recently killed matter
Pregunta 10
Pregunta
What is a saprotroph?
Respuesta
-
an organism that lives on/in non-living matter, secreting digestive enzymes into it and absorbing the produce from digestion
-
an organism that ingests non-living matter
-
an organism that obtains organic molecules from other organism
-
an organism that obtains food by feeding on living/recently killed matter
Pregunta 11
Pregunta
What is a consumer?
Respuesta
-
an organism that obtains food by feeding on living/recently killed matter
-
a group of populations living and interacting with each other in an area
-
an organism that ingests non-living matter
-
a group of organisms of the same species in the same area at the same time
Pregunta 12
Pregunta
What is a community?
Respuesta
-
a group of populations living and interacting with each other in an area
-
a group of organisms of the same species in the same place at the same time
-
the environment a species normally lives or the location of a living organism
-
a community and it abiotic environment
Pregunta 13
Pregunta
Describe what is meant by a food chain. Tick three answers
Respuesta
-
A food chain shows the linear feeding relationships between species in a community
-
A food chain shows the interaction between species in a habitat
-
The arrows represent the transfer of energy and matter as one organism is eaten by another
-
The first organism in the sequence is the consumer, followed by producers
-
The first organism in the sequence is the producer, followed by consumers
Pregunta 14
Pregunta
Describe what is meant by a food chain. Tick two answers
Respuesta
-
A food web is a diagram that shows how food chains are linked together into more complex feeding relationships within a community
-
There can only be one producer in a food web. The consumers can occupy multiple positions in the trophic levels
-
There can be more than one producer in a food web, and consumers can occupy multiple positions in the trophic levels
Pregunta 15
Pregunta
A trophic level refers to an organism's position in a food chain
Respuesta
- True
- False
Pregunta 16
Pregunta
Deduce the trophic level(s) of the waterweed, frog and kingfisher
Image:
food_web_med (image/jpeg)
Respuesta
-
waterweed = 1 frog = 3 kingfisher =4
-
waterweed = 1 frog = 3,4 kingfisher =4
-
waterweed = 1 frog = 3,4 kingfisher =3,4,5
-
waterweed = 1 frog = 3,4 kingfisher =3,4
Pregunta 17
Pregunta
Explain the energy flow in a food chain. Tick 4.
Respuesta
-
Energy enters most communities as light, where it is absorbed by autotrophs (e.g. plants) and converted into chemical energy via photosynthesis
-
Energy enters most communities as light, where it is absorbed by heterotrophs (e.g. animals) and converted into chemical energy via photosynthesis
-
Only ~10% of energy is passed from one trophic level to the next, the rest is lost
-
Energy then gets passed to the primary consumer (herbivore) when they eat the plant, and then gets passed to successive consumers (carnivores) as they are eaten in turn
-
Because ~90% of energy is lost between trophic levels, the number of trophic levels are limited as energy flow is reduced at higher levels
Pregunta 18
Pregunta
why is light the initial energy source for almost all communities?
Respuesta
-
All green plants, and some bacteria, use light as a source of energy for synthesising organic molecules
-
All green plants, animals, and some bacteria, use light as a source of energy for synthesising organic molecules
-
All green plants, and bacteria, use light as a source of energy for synthesising organic molecules
Pregunta 19
Pregunta
Why is the energy transformation presented as a pyramid?
Respuesta
-
The energy transfer is never 100% efficient
-
Each level of the pyramid of energy should be approximately one tenth the size of the level preceding it, as energy transformations are ~10% efficient
-
Typically, energy transformations in living things are ~90% efficient, with about 10% of the energy lost between trophic levels
-
Pyramids of energy will never appear inverted as some of the energy stored in one source is always lost when transferred to the next source
-
This energy may be lost as heat, be used up during cellular respiration, be excreted in faeces or remain unconsumed as the uneaten part of food
Pregunta 20
Pregunta
The saprotrophic activity of decomposers (certain bacteria and fungi), free inorganic materials from the dead bodies and waste products of organisms, ensuring a continual supply of raw materials for the producers (which can then be ingested by consumers)
Respuesta
- True
- False
¿Quieres crear tus propios Tests gratis con GoConqr? Más información.