Meristem and Leaf DB

Which of the following best describes meristematic cells?

• Fully differentiated and incapable of division

• Incompletely or not at all differentiated and capable of continued cellular division

• Large with many vacuoles

• Contain fully developed chloroplasts

Which property is NOT characteristic of meristematic cells?

• Packed closely together without intercellular cavities

• The cell wall is very thin (primary cell wall)

• The cytoplasm contains differentiated plastids

• Cells have extremely small vacuoles

Which zone in the apical meristem is responsible for stem cell function and meristem maintenance?

• Central zone

• Peripheral zone

• Lateral zone

• Basal zone

What is the primary role of cells in the peripheral zone of an apical meristem?

• To form organs and undergo morphogenesis

• To maintain stem cell function

• To transport nutrients

• To provide structural support

A plant biologist is studying a seedling and observes rapid cell division at the tip of the root. Based on your understanding of meristematic zones, which type of meristem is most likely responsible for this activity, and why?

• Apical meristem, because it initiates growth of new cells at the tips of roots and shoots

• Lateral meristem, because it increases the thickness of stems and roots

• Intercalary meristem, because it is found at the base of leaves

• Cork cambium, because it produces protective tissue

Which zone in the Arabidopsis shoot apical meristem contains meristematic cells that divide slowly and are the ultimate source of tissues that make up the plant body?

• Central zone (CZ)

• Peripheral zone (PZ)

• Rib zone (RZ)

• L1 layer

What is the primary function of the peripheral zone (PZ) in the shoot apical meristem of Arabidopsis?

• Produces the leaf primordia

• Generates the shoot epidermis

• Generates the central tissues of the stem

• Contains meristematic cells that divide slowly

Which cell layer in the Arabidopsis shoot apical meristem generates the shoot epidermis?

• L1 layer

• L2 layer

• L3 layer

• Rib zone (RZ)

How are most cell divisions oriented in the outer L1 and L2 layers of the shoot apical meristem?

• Anticlinal

• Periclinal

• Randomly oriented

• Longitudinal

Which of the following best describes the function of the rib zone (RZ) in the shoot apical meristem?

• Generates the central tissues of the stem

• Produces the leaf primordia

• Generates the shoot epidermis

• Contains meristematic cells that divide slowly