1. Which of the following statements are true?
1. An ecosystem can be visualized as a functional unit of nature.
2. The entire biosphere is typically regarded as a terrestrial ecosystem.
A) Only statement 1 is true
B) Only statement 2 is true
C) Both statements are true
D) Both statements are false
2. Which of the following statements are true?
1. Aquatic ecosystems include only oceans and seas.
2. Crop fields can be considered as man-made ecosystems.
A) Only statement 1 is true
B) Only statement 2 is true
C) Both statements are true
D) Both statements are false
3. Which of the following statements are true?
1. The primary productivity of an ecosystem is measured in terms of biomass produced.
2. Decomposers primarily produce biomass in an ecosystem.
A) Only statement 1 is true
B) Only statement 2 is true
C) Both statements are true
D) Both statements are false
4. Which of the following statements are true?
1. Energy flows in a unidirectional manner through an ecosystem.
2. Energy captured by producers is stored indefinitely.
A) Only statement 1 is true
B) Only statement 2 is true
C) Both statements are true
D) Both statements are false
5. Which of the following statements are true?
1. The standing crop in an ecosystem refers to the mass of living organisms at a given time.
2. The biomass of a species is commonly measured in terms of fresh weight.
A) Only statement 1 is true
B) Only statement 2 is true
C) Both statements are true
D) Both statements are false
6. Which of the following statements are true?
1. Primary consumers are organisms that eat producers.
2. Tertiary consumers are always herbivores.
A) Only statement 1 is true
B) Only statement 2 is true
C) Both statements are true
D) Both statements are false
7. Which of the following statements are true?
1. Decomposition involves the breakdown of complex organic matter.
2. Detritivores are organisms that do not require oxygen for decomposition.
A) Only statement 1 is true
B) Only statement 2 is true
C) Both statements are true
D) Both statements are false
8. Which of the following statements are true?
1. Gross primary productivity is the rate of organic matter production before accounting for respiration.
2. Net primary productivity is the total biomass produced by decomposers.
A) Only statement 1 is true
B) Only statement 2 is true
C) Both statements are true
D) Both statements are false
9. Which of the following statements are true?
1. Ecosystems are not affected by the Second Law of Thermodynamics.
2. The ecological pyramid can represent the energy relationship between organisms at different trophic levels.
A) Only statement 1 is true
B) Only statement 2 is true
C) Both statements are true
D) Both statements are false
10. Which of the following statements are true?
1. Primary production is defined as the total biomass produced in an ecosystem.
2. The rate of biomass production is referred to as productivity.
A) Only statement 1 is true
B) Only statement 2 is true
C) Both statements are true
D) Both statements are false
