Examlex
A conditioned stimulus is one that occurs without prior learning.
Companion Cells
Plant cells that are part of the phloem tissue and assist in the distribution of nutrients throughout the plant.
Carbon Dioxide
An invisible, scentless gas that is released when carbon and organic compounds burn, and during the breathing process, which is taken in by plants during the process of photosynthesis.
Eudicot Leaves
Leaves belonging to a major group of flowering plants that have a specific vein structure, usually netlike, characteristic of the eudicots.
Netted Venation
A vein pattern in leaves where veins form a branching network throughout, common in dicotyledons.
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