Multiple Choice
Leaves occur at intervals along the plant stem. What is the region where a leaf is attached to the stem?
33. Plant Anatomy
Roots and Shoots
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A cross section of a plant part exposes epidermis, a thick cortex, and a central cylinder of xylem and phloem. This part is a __________.
A
leaf
B
meristem
C
stem
D
bud
E
root
Verified step by step guidance1
Identify the key structures mentioned in the problem: epidermis, thick cortex, and central cylinder of xylem and phloem.
Understand the function and location of each structure: the epidermis is the outer layer, the cortex is a thick layer beneath the epidermis, and the central cylinder contains vascular tissues (xylem and phloem).
Recall the typical anatomy of plant parts: leaves, stems, buds, and roots, and which structures are commonly found in each.
Recognize that the presence of a thick cortex and a central cylinder of xylem and phloem is characteristic of a root, as roots have a central vascular cylinder surrounded by a cortex.
Conclude that the plant part described is a root, based on the anatomical features provided.
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