Scelta multipla
Artichoke hearts are tender and have a strong taste. The leaves have a strong taste, too, but most of an artichoke leaf is fibrous and too difficult to chew. The leaves must contain lots of __________.
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33. Plant Anatomy
Tissues
Scelta multipla
Collenchyma cells can be identified by __________.
A
the presence of chloroplasts
B
lignin in the cell walls
C
the lack of nuclei at maturity
D
their large central vacuoles
E
their unevenly thickened cell walls
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Understand the role of collenchyma cells in plants: Collenchyma cells provide structural support, especially in regions of new growth. They are known for their flexibility and strength.
Identify the key characteristic of collenchyma cells: These cells are characterized by their unevenly thickened cell walls, which allow them to provide support while still being flexible.
Differentiate collenchyma cells from other plant cells: Unlike sclerenchyma cells, which have lignin in their cell walls, collenchyma cells do not have lignin, making them more flexible.
Consider the options given: Chloroplasts are typically found in photosynthetic cells, not specifically in collenchyma. Lignin is associated with sclerenchyma. The lack of nuclei at maturity is a feature of xylem cells, and large central vacuoles are common in many plant cells but not a defining feature of collenchyma.
Conclude with the defining feature: The unevenly thickened cell walls are the distinguishing characteristic of collenchyma cells, setting them apart from other types of plant cells.
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