Ecology Exam

What is the primary source of energy for most ecosystems on Earth?

• The Moon

• The Sun

• The Ocean

• The Wind

Which of the following is a biogeochemical cycle?

• Water Cycle

• Rock Cycle

• Nitrogen Cycle

• Carbon Cycle

In a food web, which organism is typically at the top of the energy pyramid?

• Herbivores

• Primary Producers

• Apex Predators

• Decomposers

What term describes the role and position a species has in its environment?

• Habitat

• Niche

• Ecosystem

• Community

Which of the following is an example of a mutualistic relationship in an ecosystem?

• Lion and Zebra

• Bee and Flower

• Cat and Mouse

• Shark and Remora

What is the process by which plants convert sunlight into chemical energy?

• Respiration

• Photosynthesis

• Fermentation

• Decomposition

Which of the following best describes a population in an ecosystem?

• All the living organisms in an area

• A group of individuals of the same species

• The physical environment of an area

• The interactions between different species

What is the term for the movement of energy through an ecosystem from producers to consumers?

• Energy Flow

• Energy Cycle

• Energy Transfer

• Energy Exchange

Which of the following is a primary consumer in a food web?

• Grass

• Rabbit

• Hawk

• Mushroom

What is the main function of decomposers in an ecosystem?

• Produce energy

• Break down dead material

• Consume primary producers

• Compete with predators