1.3.1 Ecosystems

• An ecosystem consists of two main components: biotic and abiotic
• Biotic components include living organisms such as plants, animals, and bacteria.


  True
• What is the definition of a biotic component in an ecosystem?

  Living organisms
• Match the ecosystem type with its example:

  Terrestrial ↔️ Forest

  Aquatic ↔️ Ocean

  Freshwater ↔️ River

  Saltwater ↔️ Estuary
• Deserts and tundras are examples of terrestrial ecosystems.


  True
• Abiotic factors determine the types of organisms that can survive in an ecosystem.

  True
• Terrestrial and aquatic ecosystems differ in their physical environments


  True
• What is the role of producers in an ecosystem?

  Convert sunlight to energy
• Arrange the steps of the nutrient cycle:

  1️⃣ Producers convert inorganic nutrients into organic compounds

  2️⃣ Consumers obtain nutrients by consuming producers or other consumers

  3️⃣ Decomposers break down dead organisms, releasing nutrients
• What is an ecosystem defined as?

  Biological community and environment
• What is an example of an abiotic component in an ecosystem?

  Sunlight
• Sunlight is an example of an abiotic factor that provides energy for plant growth.

  True
• What is a key abiotic factor in terrestrial ecosystems?

  Soil type
• What is a defining characteristic of aquatic ecosystems?

  Water-based environment
• What are abiotic factors in an ecosystem?

  Non-living elements
• Biotic factors interact through relationships like predation and competition


  True
• Arrange the flow of energy in an ecosystem:

  1️⃣ Producers

  2️⃣ Primary Consumers

  3️⃣ Secondary Consumers

  4️⃣ Tertiary Consumers

  5️⃣ Decomposers
• Match the trophic level with its energy source:

  Producers ↔️ Sunlight

  Secondary Consumers ↔️ Primary Consumers

  Decomposers ↔️ Dead organisms
• Producers like plants use sunlight to create chemical energy
• Match the role with its example organism in the nutrient cycle:

  Producers ↔️ Plants

  Consumers ↔️ Herbivores

  Decomposers ↔️ Fungi
• An ecosystem is a biological community of interacting organisms and their physical environment
• What is an example of an abiotic factor that influences an ecosystem?

  Water
• Key abiotic factors in aquatic ecosystems include water salinity, temperature, and depth
• An ecosystem consists of biotic components, such as living organisms, and abiotic components, such as non-living elements
• Biotic factors include all living organisms
• What are the key characteristics of terrestrial ecosystems?

  Land-based, varied abiotic factors
• Producers convert sunlight into chemical energy through photosynthesis
• Only about 10% of energy is transferred from one trophic level to the next

  True
• The continuous cycling of nutrients is essential for ecosystem balance


  True