How Does the Unified Model Describe an Active Galactic Nucleus

question 8

Multiple Choice

How does the unified model describe an active galactic nucleus?

• A)as a supermassive black hole at the centre of a normal spiral galaxy
• B)as a supermassive black hole surrounded by an accretion disk and a dense disk of gas
• C)as an accretion disk around a neutron star
• D)as a gravitationally lensed high-redshift galaxy

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Definitions:

Archegonia

The female reproductive structure found in ferns, mosses, and some conifers, where fertilization of an egg occurs.

Fiddleheads

The furled fronds of a young fern, harvested for use as a vegetable.

Vascular Tissue

Plant tissues that are involved in the transportation of water, nutrients, and sugars throughout the plant, comprising xylem and phloem.

Pteridophytes

Non-flowering plants that reproduce and disperse via spores, including ferns, horsetails, and clubmosses, distinct from seed plants in their lifecycle.