Decay required practical Flashcards
What is the process of decay?
Decay is the breakdown of organic matter by decomposers.
True or False: Decomposers include bacteria and fungi.
True
Name two conditions that affect the rate of decay.
Temperature and moisture
Fill in the blank: The presence of __________ speeds up decay.
Oxygen
What is the role of decomposers in an ecosystem?
They recycle nutrients back into the soil.
Which of the following factors does NOT affect decay? A) Temperature B) Light C) Soil type
C) Soil type
How does temperature influence the rate of decay?
Higher temperatures generally increase the rate of decay.
What is the optimum temperature range for most decomposers?
20°C to 40°C
True or False: Dry conditions slow down the decay process.
True
What is the purpose of the decay practical experiment?
To investigate the factors affecting the rate of decay.
Name one method to measure the rate of decay in a practical experiment.
Measuring the loss of mass of organic matter.
Fill in the blank: __________ is produced as a byproduct of decay.
Carbon dioxide
What type of organic matter is commonly used in decay experiments?
Banana peels or bread
True or False: Increasing moisture levels will always speed up decay.
False
What is the significance of measuring temperature in a decay experiment?
It helps to understand how temperature affects the decay rate.
What is the main gas released during the decay of organic matter?
Carbon dioxide
Which factor can be controlled in a decay experiment?
Moisture levels
What is the relationship between surface area and decay rate?
Increased surface area speeds up the decay rate.
True or False: All decomposers are fungi.
False
What is one way to ensure consistent conditions in a decay experiment?
Use the same type of organic matter.
Fill in the blank: Decomposers break down organic matter into __________.
Nutrients
What is one observation you might make during a decay experiment?
Change in mass of the organic material.
Name one factor that can slow down the decay process.
Cold temperatures
Why is it important to repeat experiments in scientific investigations?
To ensure the results are reliable and valid.
What is the expected outcome when moisture levels are increased in a decay experiment?
The rate of decay is expected to increase.
True or False: Decay is an essential process for nutrient cycling in ecosystems.
True
