IB Biology Topic 4

__________ primary productivity is the total amount of energy that producers convert to chemical energy in organic molecules per unit of time.   

• Net

• Total

• Gross

• None of the above

To measure primary productivity, you can measure carbon dioxide consumption, total carbohydrates produced or ________________.

• dissolved oxygen

• total proteins produced

• light energy entering system

Tags

NGSS.HS-LS2-5

NGSS.HS-LS1-5

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

• Primary

• Net

• Secondary

Tags

NGSS.HS-LS2-5

NGSS.HS-LS2-3

The rate at which producers convert radiant energy into chemical energy

• trophic level

• net primary productivity

• gross primary productivity

• photosynthesis

Tags

NGSS.HS-LS1-5

All of the production by photosynthetic organisms in a defined area over a specified time period is known as

• Gross Productivity

• Net Productivity

• Photosynthesis + Respiration

• Photosynthesis - Respiration

Tags

NGSS.HS-LS2-5

If the amount of dissolved oxygen in the light bottle used for the investigation in the lesson does not change, an explanation for this is

• The rates of photosynthesis and respiration are equal

• Respiration is not occurring

• photosynthesis is not occurring

• no photosynthesis occurred

Tags

NGSS.HS-LS2-5

NGSS.HS-LS2-3

Which of the following is an appropriate unit of primary productivity

• kg/m2

• kg/m/day

• kJ/m2

• kg/m2/yr

Tags

NGSS.HS-LS2-5

NGSS.HS-LS1-5

One characteristic feature of the tundra is that only the surface thaws in the summer and refreezes in the winter, leaving a permanently frozen subsoil. This characteristic is known as

• Hoarfrost

• Glaciation

• Permafrost

• Crystallization

The biome known for trees with broad leaves that fall off the trees in the winter.

• Taiga/Boreal/Coniferous Forests

• Temperate Seasonal (Decidious) Forests

• Deserts

• Tropical Rain Forests

Which biome covers most of the land mass near Earth's equator?

• Desert

• Grassland

• Tropical rainforest

• Temperate forest