The Swim Bladders of Bony Fishes

question 126

Multiple Choice

The swim bladders of bony fishes

• A) evolved from branching of the gut.
• B) are used for respiration in most contemporary species.
• C) are organs of buoyancy that help them control their depth in the water column.
• D) prevent them from inhabiting marine environments.
• E) are modifications of the water vascular system found in echinoderms.

---

Definitions:

Book Value

The net value of an asset or liability according to its balance sheet account balance, calculated as original cost minus depreciation, amortization, or impairment costs.

Straight-Line Method

A depreciation technique that allocates an equal portion of the initial cost of an asset to each year of the asset's useful life.

Depreciation Expense

The annual charge to expense part of the cost of a tangible asset over its expected service life.

Construction Costs

encompass all expenses directly incurred in the physical construction of a building or structure, including materials and labor.