Organisms and their environment — IGCSE Sciences - Co-Ordinated (0973) questions by topic

A food chain is shown. tree → insect → mouse → owl Which statement about this food chain is correct? A The insect is a carnivore. B The mouse is a herbivore. C The owl is a…

Which statement describes a producer? A an organism that obtains its energy from dead or waste organic matter B an organism that makes its own organic nutrients using energy from…

In the food chain shown, 10% of the energy is transferred between each trophic level. grass - grasshopper - frog - snake - buzzard How much energy is transferred to the tertiary…

Information about a lake is shown. - Aquatic plants grow in the lake. - Aquatic plants are eaten by small fish. - Small fish are eaten by large fish. - Small fish are eaten by…

Fig. 4.1 shows part of a food web on a remote island. The arrows show feeding relationships: primrose plants - caterpillar; primrose plants - leaf beetle; buttercup plants - leaf…

Fig. 4.1 is a picture of a rhino. Rhinos only eat plants. Tick (✓) two boxes that describe rhinos. carnivore decomposer herbivore primary consumer producer secondary consumer

Tropical forests are some of the most important ecosystems in the world. Fig. 4.1 is a food chain from a tropical forest: banana tree - grasshopper - frog - python The banana tree…

A food chain is shown: plant - insect - songbird - hawk. Which statements are correct? 1 The hawk is a consumer. 2 The insect is a carnivore. 3 The songbird is a herbivore. 4 The…

Which process removes carbon dioxide from the atmosphere? A combustion B decomposition C photosynthesis D respiration

Which statement about organisms in a food chain is correct? A A carnivore is an organism that gets its energy by eating plants. B A consumer is an organism that gets its energy by…

The diagram shows gas exchange by two groups of organisms (producers and consumers) during the hours of darkness, with gases labelled P, Q, R and S exchanged with the atmosphere.…

How does an organism in the first trophic level gain energy? A by absorbing energy from sunlight B by breaking down dead or waste organic matter C by eating organisms in the…

The list shows changes that occur in a lake which is polluted by fertiliser. 1 Decomposers feed on aquatic plants. 2 Growth of algae increases. 3 Oxygen levels decrease in the…

What is an ecosystem? A a chart showing the flow of energy from one organism to another B a diagram giving the energy level of an organism in its environment C a network of…

Which line shows how the oxygen concentration of the water changes after excess fertiliser has entered a stream? [Graph: oxygen concentration vs distance downstream; line B dips…

Fig. 4.1 shows a food web from a rainforest environment (banana tree, howler monkey, three-toed sloth, snake, ocelot, jaguar). Construct a food chain from Fig. 4.1 that includes…

Fig. 10.1 is a diagram of the carbon cycle, with processes X and Y (between organisms and carbon dioxide in the atmosphere) and Z (forming fossil fuels from dead organisms).…

Fig. 10.1 is a diagram of part of the carbon cycle (carbon compounds in the atmosphere, fossil fuels, plants, animals, dead organisms, with processes A, B, C). State the name of…

Fig. 10.1 shows a lake affected by eutrophication caused by nitrates from fertilisers. [Fig. 10.1: Diagram of a lake showing algal bloom on the surface, dead and decomposing…

How do herbivores get their energy? A by eating animals and plants B by eating animals only C by eating plants only D directly from sunlight

The graph shows the change in atmospheric carbon dioxide levels over time, rising steadily from about 1958 to 2013. [Graph: mass of carbon dioxide / arbitrary units vs year; an…

The diagram shows a food chain with four organisms labelled A, B, C and D connected by arrows. [Diagram: food chain A, B, C, D; the first organism is the producer.] Which is the…

The diagram shows a food web. Producers: grass, hogweed, ivy, oak tree. Primary consumers: bank voles, goldfinches, aphids, caterpillars. Wrens feed on aphids/caterpillars;…

The diagram shows a food web including phytoplankton, zooplankton, shellfish, jellyfish, fish, turtles and seabirds. [Marine food web diagram with feeding arrows.] Which groups of…

The flow diagram shows the consequence of the overuse of fertilisers on farm land. leaching of fertiliser - fast growth of algae - death of algae - fast growth of X - death of…

Fig. 7.1 shows a food web with corn and mango (producers), grasshopper and fruit fly, rat and frog and dragonfly, snake, and eagle. Use the information in Fig. 7.1 to state the…

In a food chain, what do all living organisms get from their food? A a supply of water B oxygen for respiration C protection from disease D the energy they need

Four processes that occur in mammals are listed. 1 muscle contraction 2 cell division 3 excretion 4 maintenance of a constant body temperature Which processes reduce the amount of…