1. What is secondary productivity?
A.
The rate of formation of organic matter by producers
B.
The rate of formation of new biomass by consumers
C.
The total amount of sunlight received by an ecosystem
D.
The rate of decomposition of dead organisms
Correct Answer:
The rate of formation of new biomass by consumers
Explanation:
Secondary productivity is the rate at which consumers form new biomass from the food they assimilate.
2. Which organisms are mainly responsible for secondary productivity?
A.
Consumers
B.
Producers
C.
Sunlight
D.
Mineral nutrients
Correct Answer:
Consumers
Explanation:
Secondary productivity refers to biomass production by consumers, including herbivores, carnivores, and decomposers.
3. Secondary productivity depends mainly on the food assimilated by which organisms?
A.
Consumers
B.
Clouds
C.
Rocks
D.
Water molecules
Correct Answer:
Consumers
Explanation:
Consumers assimilate food and use it for growth and reproduction, resulting in secondary productivity.
4. Which process directly contributes to secondary productivity in an animal?
A.
Growth of body tissues
B.
Absorption of sunlight by leaves
C.
Formation of soil minerals
D.
Evaporation of water
Correct Answer:
Growth of body tissues
Explanation:
The formation of new body tissues through growth is a form of biomass production by a consumer.
5. The biomass produced by consumers through growth and reproduction is called what?
A.
Secondary production
B.
Solar radiation
C.
Mineral cycling
D.
Water storage
Correct Answer:
Secondary production
Explanation:
Secondary production is the biomass formed by consumers as they grow and reproduce.
6. Which group can contribute to secondary productivity by producing new biomass from organic food?
A.
Herbivores
B.
Sunlight
C.
Carbon dioxide
D.
Soil particles
Correct Answer:
Herbivores
Explanation:
Herbivores are consumers that convert plant food into their own biomass, contributing to secondary productivity.
7. What happens to assimilated food that contributes to secondary productivity?
A.
It is used to form new consumer biomass
B.
It is changed entirely into sunlight
C.
It becomes atmospheric oxygen only
D.
It is converted directly into minerals
Correct Answer:
It is used to form new consumer biomass
Explanation:
Assimilated food supports growth and reproduction, thereby forming new biomass in consumers.
8. Which activity of a consumer represents secondary productivity?
A.
Producing offspring
B.
Capturing solar energy
C.
Making chlorophyll
D.
Absorbing minerals through roots
Correct Answer:
Producing offspring
Explanation:
Reproduction increases consumer biomass and is therefore associated with secondary productivity.
9. Secondary productivity is measured as the rate of increase in what?
A.
Consumer biomass
B.
Sunlight intensity
C.
Rainfall
D.
Soil temperature
Correct Answer:
Consumer biomass
Explanation:
Secondary productivity is expressed as the rate at which the biomass of consumers increases.
10. A young animal gaining body mass by using food is an example of what?
A.
Secondary productivity
B.
Light absorption
C.
Nutrient weathering
D.
Water cycle
Correct Answer:
Secondary productivity
Explanation:
The animal converts assimilated food into additional body mass, which is secondary productivity.
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