IB Bio Unit

Which category of organisms is correctly described in this table?

• A

• B

• C

• D

What limits the length of a food chain in an ecosystem?

• The size of the individual organisms

• Competition between organisms

• The loss of energy between trophic levels

• Natural selection

Tags

NGSS.MS-LS1-6

What is a feature of shorter wavelength radiation?

• It is the type emitted by the Sun

• It has less energy per photon than longer wavelengths

• It is absorbed by greenhouse gases

• It is reflected by chlorophyll

Tags

NGSS.MS-PS4-1

What are characteristics of species?

• I and II

• I and III

• II and III

• I, II and III

Tags

NGSS.MS-LS3-1

NGSS.MS-LS4-4

The statement is about the role of some bacteria in ecosystems. What mode of nutrition is described?

• They are autotrophs

• They are consumers

• They are saprotrophs

• They are detritivores

Tags

NGSS.MS-LS2-3

The diagram represents a pyramid of energy. What level does the letter X represent?

• Light

• Primary consumers

• Abiotic environment

• Producers

Tags

NGSS.MS-LS2-3

What is the classification of an organism that is able to make organic compounds from inorganic nutrients?

• Autotroph

• Consumer

• Detritivore

• Saprotroph

How is peat formed?

• From methanogenic archeans under anerobic and acidic conditions in deep sea vents

• From partially decomposed organic matter under anaerobic and acidic conditions in waterlogged soils

• From porous limestone under high pressure, aerobic and alkaline conditions in ocean beds

• From bituminous coal under high pressure, anaerobic conditions below ground

Tags

NGSS.MS-LS2-3

NGSS.MS-LS2-1

What contributes to rising atmospheric concentrations of carbon dioxide and increases average global temperatures?

• An increase in shorter wave radiation emitted by the Earth

• An increase in longer wave radiation emitted by the Earth

• An increase in the combustion of fossilised organic matter

• The depletion of the ozone in the stratosphere

Tags

NGSS.MS-ESS3-5

What could be represented by arrows 1, 2 and 3?

• 1 - death of consumers, 2 - cell respiration in saprotrophs, 3 - cell respiration in producers

• 1 - death of consumers, 2 - incomplete decomposition, 3 - photosynthesis in producers

• 1 - cell respiration in saprotrophs, 2 - incomplete decomposition 3 - photosynthesis in producers

• 1 - cell respiration in consumers, 2 - cell respiration in saprotrophs, 3 - cell respiration in producers

Tags

NGSS.MS-LS2-3

NGSS.MS-LS1-6