awn
Awn: An awn is a bristle-like structure that protrudes from the tip of a plant’s leaf or flower. It is used to help the plant disperse its seeds.
Glossary Category:
axil
Axil: The axil is the angle formed between a plant’s stem and its leaves. It is where the leaves attach to the stem.
axillary bud
Axillary bud: A small, undeveloped shoot that grows from the axil of a leaf. The axillary bud may develop into a flower, branch, or leaf.
B-Horizon
B-Horizon: The B-horizon is the subsurface layer of a soil that is below the A-horizon (the surface layer). The B-horizon is typically darker in color than the A-horizon because it has more organic matter and minerals.
Bacillus thuringiensis (Bt)
Bacillus thuringiensis (Bt): Bacillus thuringiensis is a bacterium that produces proteins that are toxic to certain insects. Bt crops have been genetically engineered to contain the Bt toxin, which kills insects that eat the plants.
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