Question

1. when one organism benefits while the other is harmed, the relationship is called: a) commensalism b) parasitism c) mutualism d) competition 9. energy flows through ecosystems in what direction? a) consumers → producers → sun b) sun → producers → consumers c) sun → consumers → producers d) consumers → sun → producers 10. which of the following is not a characteristic of living things? a) responding to the environment b) reproducing c) maintaining homeostasis d) being made of multiple cells part b: fill - in - the - blank (8 questions, 3 points each = 24 points total) word bank • energy flow • lichens • mutualism • decomposer • biological organization • extinction • primary succession • population 11. a complex life form that is a symbiotic partnership of two separate organisms is ________. 12. a fundamental principle describing how living things are structured from simple building blocks to complex systems, moving from the atomic level up to the biosphere is called ______. 13. the complete disappearance of a species or organism from earth is ______. 14. the process of breaking down glucose for atp is called ______. 15. a ______ succession occurs on bare rock with no soil. 16. a group of individuals of the same species living in the same area is ______. 17. an ecological interaction between different species in which both participants receive a net benefit is ______. 18. the movement of energy from one system or entity to another is ______. 19. an organism that breaks down dead organic matter is ________.

Explanation:

• Question 8: Parasitism is a relationship where one organism benefits and the other is harmed. Commensalism is when one benefits and the other is unaffected, mutualism is when both benefit, and competition is a struggle for resources.
• Question 9: Energy in ecosystems flows from the Sun to producers (which capture solar - energy through photosynthesis) and then to consumers.
• Question 10: Not all living things are made of multiple cells. Single - celled organisms like bacteria and protists are living and can respond to the environment, reproduce, and maintain homeostasis.
• Question 11: Lichens are a symbiotic partnership of two separate organisms (a fungus and an alga or a cyanobacterium).
• Question 12: Biological organization describes the hierarchy of structures from atoms to the biosphere.
• Question 13: Extinction is the complete disappearance of a species or organism from Earth.
• Question 14: Primary succession occurs on bare rock with no soil.
• Question 15: A population is a group of individuals of the same species living in the same area.
• Question 16: Mutualism is an ecological interaction between different species where both participants receive a net benefit.
• Question 17: Energy flow is the movement of energy from one system or entity to another.
• Question 18: A decomposer is an organism that breaks down dead organic matter.

Answer:

1. B. Parasitism
2. b. Sun → Producers → Consumers
3. d. Being made of multiple cells
4. Lichens
5. Biological Organization
6. Extinction
7. Primary succession
8. Population
9. Mutualism
10. Energy Flow
11. Decomposer