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19.3. Ecosystems and biodiversity
A subsection of Biology, 5090, through 19. Relationships of organisms with one another and with the environment
Listing 10 of 23 questions
Over a period of several months, a student recorded some activities of the wild life in a particular habitat. The following observations appeared in her notebook. 1. Young shoots of a crop of bean plants covered with greenflies sucking food from the stems. 2. Saw a large bird , which usually catches mice, swoop to take a small yellow bird clinging to a bean stem. Noticed that these small birds often visit the bean field to eat some of the aphids or butterflies. 3. Flowers of beans being visited by many different species of butterfly. 4. Mice seen nibbling at some dispersed bean seeds. 5. Spider’s web constructed between two bean plants with 5 large black flies caught in it. Rotting body of a mouse nearby attracting similar flies. Complete by filling in the names of the organisms to show the feeding relationships in this community. bean plants What name is given to a chart of feeding relationships as shown in ? Name two top carnivores observed by the student. 1. 2. In each space below, draw and label a pyramid of biomass for the hawks, mice and bean plants in this habitat, draw and label a pyramid of numbers for a bean plant, small birds and aphids.
5090_s08_qp_2
THEORY
2008
Paper 2, Variant 0
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Questions Discovered
23