Understanding Decomposition

What is decomposition in biology?

• Decomposition is the process of photosynthesis in plants.

• Decomposition is the breakdown of organic matter by decomposers, recycling nutrients in ecosystems.

• Decomposition refers to the growth of new organisms from seeds.

• Decomposition is the formation of fossil fuels over millions of years.

Name two types of decomposers.

• Fungi, Bacteria

• Mammals

• Insects

• Plants

How does decomposition benefit the ecosystem?

• Decomposition benefits the ecosystem by recycling nutrients, supporting plant growth, and maintaining ecological balance.

• Decomposition disrupts food chains and harms wildlife.

• Decomposition increases pollution and harmful waste.

• Decomposition leads to soil erosion and nutrient loss.

What role do bacteria play in decomposition?

• Bacteria create organic matter without breaking it down.

• Bacteria play a crucial role in decomposition by breaking down organic matter and recycling nutrients.

• Bacteria only cause diseases and have no role in decomposition.

• Bacteria are primarily responsible for photosynthesis.

Explain the process of decomposition in soil.

• Decomposition in soil involves the use of chemical fertilizers to enhance growth.

• Decomposition in soil is the process of planting new seeds to grow plants.

• Decomposition in soil is the process of breaking down organic matter into simpler substances by microorganisms, fungi, and detritivores, enriching the soil with nutrients.

• Decomposition in soil is the process of removing nutrients from the soil to prevent overgrowth.

What factors can affect the rate of decomposition?

• Presence of insects

• Time of day

• Soil color

• Temperature, moisture, oxygen availability, pH levels, and type of organic material.

How does decomposition relate to the carbon cycle?

• Decomposition absorbs carbon from the atmosphere, reducing its levels.

• Decomposition has no impact on the carbon cycle whatsoever.

• Decomposition releases carbon back into the atmosphere and soil, playing a crucial role in the carbon cycle.

• Decomposition only affects nitrogen levels in the soil.

Give an example of a decomposer in a forest ecosystem.

• Tree

• Deer

• Birds

• Fungus (e.g., mushrooms)