A Leaf Primordium Is Initiated as a Small Mound of Tissue

question 44

Multiple Choice

A leaf primordium is initiated as a small mound of tissue on the flank of a dome-shaped shoot apical meristem. The earliest physical evidence of the site of a newly forming leaf primordium would be

• A) development of chloroplasts in a surface cell of the shoot apical meristem.
• B) cell division in the shoot apical meristem with the newly forming walls perpendicular to the surface of the meristem.
• C) preprophase bands parallel to the surface of the meristem in subsurface cells of the shoot apical meristem.
• D) elongation of epidermal cells perpendicular to the surface of the shoot apical meristem.
• E) formation of stomata in the epidermal layer of the shoot apical meristem.

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Definitions:

Pretend Play

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Object Permanence

Piaget’s term for the understanding that a person or object still exists when out of sight.

Centration

In Piaget’s theory, the tendency of preoperational children to focus on one aspect of a situation and neglect others.

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