#1
Which process is responsible for the release of carbon dioxide into the atmosphere?
Respiration
ExplanationCellular process in organisms releasing carbon dioxide as a byproduct.
#2
During photosynthesis, carbon dioxide is converted into which compound?
Glucose
ExplanationTransformation of carbon dioxide into a sugar molecule using light energy.
#3
In which part of the plant does photosynthesis primarily occur?
Leaves
ExplanationPhotosynthesis mainly takes place in the leaves, where chloroplasts are abundant.
#4
Which process involves the breakdown of glucose to release energy in cells?
Respiration
ExplanationRespiration is the cellular process breaking down glucose to release energy.
#5
Which gas is released as a byproduct of cellular respiration?
Carbon dioxide
ExplanationCarbon dioxide is produced during the process of cellular respiration.
#6
Which of the following is NOT a part of the carbon cycle?
Evaporation
ExplanationEvaporation is not directly involved in the cyclic movement of carbon among living organisms and the environment.
#7
In what form do plants store excess carbon for later use?
Starch
ExplanationPlants store surplus carbon in the form of a complex carbohydrate called starch.
#8
What is the primary source of carbon dioxide emissions resulting from human activities?
Burning fossil fuels
ExplanationCombustion of fossil fuels releases significant amounts of carbon dioxide into the atmosphere.
#9
What is the role of decomposers in the carbon cycle?
Break down organic matter and release carbon back into the soil
ExplanationDecomposers break down dead organisms, returning carbon to the soil.
#10
What is the role of chlorophyll in photosynthesis?
To absorb light energy
ExplanationChlorophyll molecules absorb light energy during photosynthesis.
#11
Which molecule is primarily responsible for trapping heat in the Earth's atmosphere?
Carbon dioxide
ExplanationCarbon dioxide is a major greenhouse gas, trapping heat and contributing to global warming.
#12
Which process involves the conversion of organic matter into fossil fuels over millions of years?
Carbonization
ExplanationTransformation of dead organic matter into fossil fuels through geological processes.
#13
Which organism is responsible for fixing atmospheric nitrogen into a usable form for plants?
Bacteria
ExplanationCertain bacteria convert atmospheric nitrogen into a form plants can use for growth.
#14
Which ecosystem plays a significant role in carbon sequestration?
Mangroves
ExplanationMangroves are effective in storing carbon and contribute to carbon sequestration.
#15
Which part of the carbon cycle involves the conversion of organic matter into fossil fuels?
Carbonization
ExplanationCarbonization is the geological process converting organic matter into fossil fuels over extended periods.