Pollen from a Plant with the S₁S₂ Genotype Is Recognized

question 18

Multiple Choice

Pollen from a plant with the S₁S₂ genotype is recognized and allowed to germinate on the stigma of the same plant with the S₁S₂ genotype.According to the S-system hypothesis,this indicates that the plant is _____.

• A)self-compatible and can self-pollinate.
• B)self-compatible and must cross-pollinate.
• C)self-incompatible and can self-pollinate.
• D)self-incompatible and must cross-pollinate.

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Definitions:

Osmosis

The diffusion of water through a semipermeable membrane from a region of low solute concentration to a region of high solute concentration.

Simple Diffusion

The movement of molecules from an area of high concentration to an area of low concentration without the need for energy input, often across a permeable membrane.

Phagocytosis

The process by which cells engulf large particles or microorganisms, breaking them down within phagosomes, contributing to cellular defense and nutrient acquisition.

Pinocytosis

A form of endocytosis in which a cell engulfs liquid substances from its surroundings, forming small vesicles.