Recent Research Has Shown That Pollination Requires That Carpels Recognize

question 83

Multiple Choice

Recent research has shown that pollination requires that carpels recognize pollen grains as "self or nonself." For self-incompatibility, the system requires

• A)rejection of nonself cells.
• B)the rejection of self cells.
• C)carpel incompatibility with the egg cells.
• D)that the flowers be incomplete.
• E)the union of genetically identical sperm and egg cells.

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Definitions:

Tympanic Membrane

Eardrum; cellular membrane that separates the external from the middle ear; vibrates in response to sound waves.

Oval Window

Membranous structure to which the stapes attaches; transmits vibrations to the inner ear.

Optic Chiasma

A part of the brain where the optic nerves partially cross, playing a crucial role in the visual system by combining visual information from each eye.

Optic Nerve

The nerve that transmits visual information from the retina to the brain.