The Veins of Leaves Are ________

question 25

Multiple Choice

The veins of leaves are ________.
I.composed of xylem and phloem
II.continuous, with vascular bundles in the stem and roots
III.finely branched to be in close contact with photosynthesizing cells

• A) only I
• B) only II
• C) only III
• D) I, II, and III

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Definitions:

Surfactant

A substance that reduces the surface tension of fluids, facilitating processes like breathing by preventing the collapse of alveoli in the lungs.

Type II Pneumocytes

Specialized cells lining the alveoli of the lungs that secrete pulmonary surfactant to decrease the surface tension at the air/liquid interface, aiding in respiratory mechanics.

Cuboidal Epithelial Cells

Cube-shaped cells found lining various ducts and glands, playing a role in secretion and absorption.

Boyle's Law

A gas law stating that the pressure of a given mass of an ideal gas is inversely proportional to its volume at a constant temperature.