An Arthropod Exoskeleton Is Composed of

question 54

Multiple Choice

An arthropod exoskeleton is composed of

• A) silica.
• B) calcium carbonate.
• C) cellulose.
• D) chitin.
• E) lignan.

Understand the political organization and economic status of the elderly.

Learn about the medical and ethical considerations surrounding euthanasia.

Explore the cultural perceptions and ambivalence towards aging.

Recognize the statistical and societal implications of demographic shifts and ratios within aging populations.

---

Definitions:

Hybrid Sterility

A condition in hybrid animals or plants where they are unable to produce offspring due to genetic and chromosomal differences between the parents.

Hybrid Inviability

Hybrid inviability is a postzygotic barrier where hybrid offspring fail to survive to maturity, reducing the chances of genes being exchanged between different species.

Temporal Isolation

A mechanism of reproductive isolation in which two species breed at different times, preventing them from interbreeding.

Hybrid Breakdown

A postzygotic barrier where hybrid offspring have reduced survival or fertility rates.