Stomata Opening After Illumination Following Eight Hours in Darkness: Plant

question 47

Multiple Choice

Stomata opening after illumination following eight hours in darkness: plant is Xanthium pennsylvanicum.

• A) Supports both Hypothesis I and II.
• B) Supports only Hypothesis I.
• C) Supports only Hypothesis II.
• D) Supports neither hypothesis.

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Definitions:

Chemoautotrophs

Organisms that obtain their energy through the oxidation of inorganic molecules, rather than from sunlight.

Photoheterotrophs

Organisms that obtain energy from light but require organic carbon sources for growth and development, unlike plants which can fix carbon dioxide.

Vector

An organism, typically an insect, that transmits pathogens from one host to another, or a molecule used to insert DNA into a host cell in genetic engineering.

Bacterial Decomposers

Bacteria that break down dead organic material, contributing to the decomposition process and nutrient cycling in ecosystems.