Chapter 4 Multiple Choice Questions

Interactions among species
. Which of the following lists shows elements of the biological hierarchy in the correct size order from largest to smallest?

. Scientists estimate that the first multicellular organism evolved

. What percentage of the biomass produced by photosynthesis is captured by animals in aquatic ecosystems?

. Hooked, sharp or glandular hairs are examples of which type of plant defences against herbivores?

. Which of the following compounds is NOT a structural element of plant cells?

. Caffeine is an example of a

. Which of the following is NOT an adaptation seen in herbivores to help them overcome defensive toxins produced by plants?

. Sphondin and bergapten are toxins produced by which plant against the webworms which attack it?

. The impact of top predators on lower levels in a complex food web is known as ..

. Which geographical area is home to about 25% of the world's marsupials?

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