Questions and Answers

The location of the pericyle is best described as:
– the outermost layer of the vascular cylinder.
– just beneath the epidermis.
– adjacent to the apical meristem.
– lining the cells of the endodermis.
– between layers of primary xylem and primary phloem.

Root hairs develop from the:
– Casparian strip.
– pericycle.
– cortex.
– endodermis.
– epidermis.

Most of a carrot, a root adapted for carbohydrate storage, is:
– endodermis.
– phloem.
– xylem.
– pericycle.
– cortex.

In leaves, chloroplasts are found in _____.
– xylem
– palisade mesophyll
– phloem
– cuticle

Which of the following makes up most of an old tree trunk?
– secondary xylem
– primary phloem
– meristem tissue
– primary xylem
– secondary phloem

Which of these tissues is between the epidermis and the vascular bundle in a young dicot stem?
– phloem
– pith
– cortex
– ground tissue
– xylem

In a dicot stem, the ________ is between the vascular cambium and the cork cambium.
– vascular cambium
– phloem
– vascular cylinder
– cork
– xylem

How is the supply of vascular cambium maintained?
– by the differentiation of apical meristem
– by the differentiation of secondary xylem
– by the division of its cells
– by the differentiation of cork
– by the differentiation of secondary phloem

What is the function of cork?
– regulating the opening and closing of stomata
– providing a site for photosynthesis
– providing cells for primary growth
– providing cells for secondary growth
– insulation and waterproofing

Vascular cambium forms wood toward the stem’s _____ and secondary phloem toward the stem’s _____.
– surface … center
– center … center
– surface … surface
– top … bottom
– center … surface