19.2. Food chains and food webs
A subsection of Biology, 0610, through 19. Organisms and their environment
Listing 10 of 345 questions
shows a food chain that is found in the sea. green alga sea snail not to scale crab starfish State the name of the producer in this food chain. Define the term producer. State the name of the secondary consumer in this food chain. State the name of the herbivore in this food chain. State what the arrows in a food chain represent. In some countries humans eat crabs. Explain how the over-harvesting of crabs could affect the other organisms in the food chain shown in .
0610_w18_qp_33
THEORY
2018
Paper 3, Variant 3
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shows a food web. snake bird spider frog dragonfly aphid flowering plant tree beetle caterpillar Complete Table 5.1 using the information in . One has been done for you. Table 5.1 number shown in producers herbivores primary consumers carnivores State the name of one organism in which obtains its energy from eating three different organisms. A disease killed most of the snakes in the food web in . Complete the sentences by circling the correct words in bold. The first one has been done for you. The population of snakes increases / decreases / stays the same . The population of spiders increases / decreases / stays the same because there is less predation / food / competition . The population of caterpillars increases / decreases / stays the same because there is more predation / food / competition . Decomposers are not shown in the food web in . Complete the definition of the term decomposer. A decomposer is an organism that gets its from dead or waste material. shows a food chain. cabbage caterpillar bird Table 5.2 shows the number of organisms in this food chain and some of the information needed to draw a pyramid of numbers. Table 5.2 organism number of organisms width of bar in pyramid / mm bird caterpillar cabbage Complete Table 5.2 by calculating the missing value and writing it in the table. Complete the pyramid of numbers on the grid for the food chain shown in using the information in Table 5.2. The bar for the cabbage has been done for you. Label the organisms on the pyramid of numbers.
0610_w20_qp_32
THEORY
2020
Paper 3, Variant 2
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Questions Discovered
345