IB Biology Topic 4

A large region characterised by a specific type of climate and certain type of plants is known as.

• boreal forest (taiga)

• climate

• biome

• canopy

__________ primary productivity = the organic materials that remain after photosynthetic organisms in the ecosystem have used some of these compounds for their cellular energy needs (cellular respiration).

• Gross

• Total

• Net

• Secondary

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NGSS.MS-LS2-3

Secondary productivity is rate of formation of new organic matter by

• Producer

• Parasite

• Consumer

• Decomposer

Tags

NGSS.MS-LS2-3

The biomass available for consumption by the herbivores and the decomposers is called

• Net primary productivity

• Secondary productivity

• Standing crop

• Gross primary productivity

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NGSS.MS-LS2-3

During the process of ecological succession the changes that take place in communities are

• Orderly and sequential

• Random

• Very quick

• Not influenced by the physical environment

The zone at the edge of a lake or ocean which is alternatively exposed to air and immersed in water is called

• Pelagic zone

• Benthic zone

• Littoral zone

• Lentic zone

Lichens are returning to the forests of the industrial areas of the UK due to strict pollution control. What is the expected outcome in the population of peppered moths (Biston betularia)?

• Increased numbers of light coloured peppered moths

• Increased industrial melanism in peppered moths

• Increased predation of peppered moths

• Increased speciation of peppered moths

Tags

NGSS.MS-LS2-4

NGSS.MS-LS4-4

The diagram illustrates an embryonic stage of two organisms.Which of the following can be determined by observing the embryos shown in the diagram? 

• The organisms share a common ancestry.

• The organisms belong to the same genus.

• The organisms are native to the same geographic areas.

• The organisms will grow into anatomically similar adults.

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NGSS.MS-LS4-2

NGSS.MS-LS4-3

The diagram represents the relationship between beak structure and food in several species of finches found on the Galapagos Islands. The different beak structures observed in the diagram are evidence of

• different species of finches adapting to different environments over many generations

• finches changing their beak characteristics so that they could feed efficiently

• finch species with different beak structures coming to the Galapagos Islands from the mainland

• finches mating with birds of other species and acquiring some of their traits

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NGSS.MS-LS4-2

NGSS.MS-LS4-4

Over generations of time apart on different islands with different food sources, the separated populations of Galapagos finches accumulated genetic differences until each group had different beaks. This is an example of _____.

• natural selection

• genetic drift

• adaptation

• speciation

Tags

NGSS.MS-LS4-2

NGSS.MS-LS4-4