Which Lineage of Echinoderms Is Made Up of About 600

question 74

Multiple Choice

Which lineage of Echinoderms is made up of about 600 living species of sea lilies and feather stars?

• A)Asteroidea
• B)Crinoidea
• C)Holothuroidea
• D)Ophiuroidea

---

Definitions:

Expected Rate of Return

The anticipated amount of profit or loss an investment is projected to generate over a specific period, expressed as a percentage.

Portfolio of Risky Securities

A collection of investments that contain a degree of risk, with the expectation of achieving higher returns compared to risk-free assets.

Weighted Sum

A mathematical technique where each component is multiplied by a factor reflecting its importance before their sum is computed.

Variance of Returns

A measure of the dispersion of returns for a given security or market index, typically used to gauge the risk associated with a particular investment.