Multiple Choice
Why might plant species exhibit variation in the number of stomata present on their leaves?
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9. Photosynthesis
Introduction to Photosynthesis
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How does the carbon in grass ultimately become part of a lion?
A
A lion eats grass directly, absorbing the carbon.
B
A lion eats herbivores, such as zebras, that have eaten grass and incorporated its carbon into their bodies.
C
A lion breathes in carbon dioxide released by grass and incorporates it into its body.
D
The carbon in grass is converted into water, which the lion drinks.
Verified step by step guidance1
Step 1: Understand the concept of energy flow and carbon transfer in ecosystems. Carbon is a key element in organic molecules and moves through the food chain via consumption and assimilation.
Step 2: Recognize that grass is a primary producer. Through photosynthesis, grass converts carbon dioxide (CO₂) from the atmosphere into organic compounds, such as glucose, which contain carbon.
Step 3: Herbivores, such as zebras, consume grass and digest its organic compounds. The carbon from the grass becomes part of the herbivore's body through assimilation into tissues like muscles and fat.
Step 4: Lions, as carnivores, eat herbivores like zebras. When a lion consumes a zebra, the carbon in the zebra's tissues is transferred to the lion and incorporated into the lion's body through digestion and assimilation.
Step 5: Conclude that the carbon in grass ultimately becomes part of a lion through the food chain, specifically through the lion consuming herbivores that have eaten grass and assimilated its carbon.
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