Indiana Nature Biology Glossary

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Imperfect Flower: (See unisexual flower).

Indehiscent: Refers to a fruit that doesn’t open naturally to release its seeds at maturity.

Inflorescence: The entire flowering portion of a plant; usually used to describe groups or clusters of flowers and their arrangements.

Inner Margin: The posterior edge of an insect’s wing.

Forewing margins of regal moth (Citheronia regalis)

Instar: One of the developmental stages of an insect larvae or other invertebrate occurring between hatch and first exoskeleton molt and following successive molts thereafter.

Silkmoth caterpillar instars

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