Biology Sem 1 wk 1

A doctorfish grazing on ocean algae is an example of a heterotroph that is an herbivore.

• True

• False

Which is part of the biogeochemical cycle?

• helium gas escaping into space

• carbon trapped on the ocean floor

• lava flowing from an active volcano

• solar radiation traveling to Earth

Tags

NGSS.MS-ESS2-1

NGSS.MS-LS2-3

A __ is a large geographic area with similar climax communities.

Which biome occurs in the United States and once contained huge herds of grazing herbivores? 

• boreal forest

• temperate forest

• grassland

• savanna

Which defines a biome as a desert?

• a region of few or no trees

• annual rainfall less than 10 cm/yr

• area with no organic matter in soil

• rate of evaporation higher than precipitation

The terrestrial biome with the greatest biodiversity is the __.

Tags

NGSS.MS-LS2-5

Which explains why secondary succession generally occurs more rapidly in an area than does primary succession?

• Average precipitation is higher.

• Moderate climatic conditions exist.

• Pioneer species are microscopic.

• Soil formation has already occurred.

Conifer trees dominate boreal forests rather than tundra because of __.

• direct rays of light hitting the biome

• a lack of permanently frozen soil

• mild climatic and weather conditions

• the absence of better adapted trees

Tags

NGSS.MS-LS2-4

An average of 78 Norway maple trees per hectare of deciduous forest is an example of __.

• population density

• population range

• dispersion

• evolution

Which organism follows an r-strategy for reproduction?

• human

• mayfly

• robin

• zebra