Leaves of Many Plants Change Colors in the Fall Because

question 32

Multiple Choice

Leaves of many plants change colors in the fall because

• A) the cooler weather causes plants to produce more of the photosynthetic accessory pigments.
• B) chlorophyll in the leaves degrades with shorter days and cooler temperatures.
• C) the decrease in daylight hours causes the plant to produce more of the photosynthetic accessory pigments.
• D) the plants produce more chlorophyll.
• E) All of the answer choices are correct.

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Definitions:

Fossa Ovalis

A depression in the atrial septum of the heart, marking the location of the foramen ovale in the fetal heart.

Stress

A physical, chemical, or emotional factor that causes bodily or mental tension and may be a factor in disease causation.

Fetal Development

The process of development and growth of a fetus inside the womb from conception to birth.

Oxytocin

A hormone produced by the hypothalamus and released by the pituitary gland, playing roles in childbirth, lactation, and social bonding.