Our environment

Every food chain in the ecosystem begins with………., which are the original source of food

• Saprophytes

• Parasites

• Producers

• Herbivores

Ecology is one of topic in Biology subject. What is exactly the main point of ecology?

• Intra-species and inter-species interaction

• Behavior of organism as individual

• Interaction between organisms and environment

• Behavior of organisms in one population

Sun is known as the most important source of life in earth. Below there are sun's roles in energy flow, except

• Sunlight helps plant to liberate oxygen from water

• Sunlight is the main source for plants to create sugar as food

• Helping photosynthetic organisms converting inorganic matters to organic matter

• Sun helps plant to do respiration

What is population?

• A group of mixed species of organisms

• A group of different species in one habitat

• A group with majority of one species and minority of another species

• A group of same species in one habitat

What form is "eating and to be eaten process" in one ecosystem?

• a chain

• a cycle

• a pyramid

• a box

What destroys an ecosystem the most?

• Humans

• Animals

• Birds

• Insects

What is the job of a decomposer?

• To break down dead plants and animals

• Plants for animals to feed of from

• Plants for animals to feed of from

• To produce energy to the plants

What are autotrophic organisms?

• Organisms are those that need to ingest organic material to nourish themselves.

• Organisms are those that can produce their own food, or rather, that produce organic material from inorganic compounds

• A set of all of the ecosystems on the planet.

• I don't know

What is a biosphere?

• A biosphere is the set of all of the ecosystems on the planet

• A biosphere is all the waters on the earth's surface, such as lakes and seas

• A biosphere is where all biotic and abiotic organisms interact

• A biosphere is the envelope of gases surrounding the earth or another planet

 

Temperature, light, water, soil, and air are all ________ parts of the environment

• Biotic factors

• Abiotic factors

• Consumers

• Producers