Science 8d: Ecological Relationships

Green plants can make their own food; they are called
1. producers
2. herbivores
3. carnivores
4. tertiary consumers
Carnivores eat
1. meat only
2. plants only
3. plants and meat
4. nothing; they make their own food
Mosses do not
1. produce fruit
2. live in damp places
3. have thin leaves
4. make tiny spores instead of seeds
Ferns do not
1. have flowers
2. have strong stems, roots and leaves
3. have xylem tubes for carrying water
4. make spores instead of seeds
Conifers do not
1. have large colourful flowers
2. have xylem tubes for carrying water
3. have leaves like needles
4. produce their seeds inside cones
Flowering plants do not
1. produce spores
2. produce flowers
3. produce flowers
4. make seeds inside fruits and berries
Competition is when living things fight for
1. resources
2. their rights
3. weeds
4. rocks
Which of the following is not a resource that living things might compete for
1. weeds
2. food
3. space
4. water
Which of the following characteristics will not help a weed to flourish
1. grows very slowly
2. produces many seeds which are easily spread
3. flowers twice a year
4. resistant to many weed killers
Which of these will not limit the growth of a plant or animal population
1. abundant food/ nutrients
2. increased number of predators
3. increased levels of disease
4. increased population
where might you find the most green plants
1. in open ground
2. on the woodland floor
3. in fast flowing rivers
4. under a shaded bank
In a river or pond most of the green plants will be
1. in shallow water or near the surface
2. at the deepest part
3. underneath overhanging branches or banks
4. in the fastest flowing areas
Which of these will not limit the growth of a plant or animal population
1. absence of predators
2. lack of shelter
3. reduced levels of food and water
4. reduced levels of light
A population is described as
1. a group of the same animal or plant living in the same habitat
2. all the animals living in a habitat
3. all the plants living in a habitat
4. all the living things that live in a habitat
Sustainable growth is when
1. plants and animals are removed at the same rate at which they are replaced
2. only plants are removed from a habitat
3. only animals are removed from a habitat
4. animals are hunted to extinction
A high birth rate and low death rate in humans would lead to
1. an increase in the size of the population
2. the size of the population staying the same
3. the size of the population decreasing
4. the extinction of humans
Improved medical care will
1. increase the birth rate and decrease the death rate leading to a rise in population
2. equally increase both the birth and death rates leading to a stable population size
3. increase the death rate and reduce the birth rate leading to a fall in population size
4. have no effect on birth or death rate
In a food pyramid there are always more
1. producers
2. herbivores
3. predators
4. top carnivores
In a food pyramid there would be more
1. green plants
2. caterpillars
3. shrews
4. owls
In a food pyramid the energy passes
1. from the producers up to the top carnivores
2. from the top carnivores to the producers
3. both up and down the pyramid equally
4. whichever way needs the energy most
Which of these is not classed as a nutrient?
1. light
2. phosphates
3. nitrates
4. potassium
Living things can be a good indicator of how clean water is. In dirty water we wouldn't find
1. mayfly larvae and stonefly larvae
2. blood worms
3. sludge worms
4. water-lice
Ecology is the study of
1. how living things interact with each other and with their environment
2. how sound reflects of rocks
3. what happens in the arctic
4. food webs and pyramids
Charles Elton was responsible for many of the ideas that formed the basis of the science called
1. ecology
2. environmentalism
3. chemistry
4. biology
Which of the following would not be classed as a producer
1. squid
2. plant plankton
3. oak tree
4. cabbages
Much more of the pesticide DDT is found in top carnivores than in river water. This is because
1. pesticides are retained in the animals and passed up the food chain
2. top carnivores drink a lot of water
3. top carnivores are unable to deal with pesticides in their body
4. smaller animals are easily able to get rid of the pesticide in their body
Which of the following conditions would you not associate with soils
1. amount of dissolved oxygen
2. moisture content
3. temperature
4. amount of rotting material
A community is described as
1. all the living things that live in a habitat
2. a group of the same animal or plant living in the same habitat
3. all the plants living in a habitat
4. all the animals living in a habitat
What would be the result of removing green plants from a habitat
1. All animals and insects would die in a very short space of time
2. the animals would survive by finding different food sources
3. the animals would eat all the insects and only they would survive
4. the insects would survive but the other animals would die
In a community of hares and foxes the number of foxes increases rapidly after a mild winter. What would be the effect on the number of hares
1. The number of hares would decrease
2. The number of hares would stay the same
3. The number of hares would increase
4. It is not possible to tell