In What Sense Are the Quasars "Quasi-Stellar

question 17

Multiple Choice

In what sense are the quasars "quasi-stellar"?

• A)Their energy production is hydrogen-helium fusion, like main sequence stars.
• B)They are upscale versions of O stars, yet hundreds of times more massive.
• C)Their luminosity comes from the millions of supergiants that compose them.
• D)Their spectra are like that of ordinary stars.
• E)In short time exposures, their images looked stellar.

Understand the rules for identifying the number of elements in specific compounds based on their names.

Understand the evolutionary timeline and diversification of insects in correlation with land plants.

Distinguish between different groups of arthropods based on physical characteristics.

Comprehend the adaptations and systems of various invertebrates for nutrition and locomotion.

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Definitions:

Bilateral Symmetry

A body plan in which an organism can be divided into two equal halves along a single plane, characteristic of many animals.

Radula

A unique anatomical feature found in mollusks, consisting of a chitinous ribbon-like structure used for feeding by scraping or cutting food.

Polychaetes

A class of annelid worms, known for their bristled segments which are predominantly marine.

Chaetae

Bristle-like structures made of chitin found on the bodies of annelid worms, such as earthworms, contributing to their locomotion.