Which of the following is true about irregular galaxies?

Question

Quizplus · Accepted Answer

Irregular galaxies were more common when the universe was younger, as they formed from the interaction and merging of smaller galaxies. As the universe aged, more regular galaxies formed through processes such as spiral arms and more ordered star formations.

Answer: B
 Irregular galaxies generally lack the well-defined spiral arms and disc structure seen in regular galaxies. However, they often have a significant spheroidal component, meaning they have a more rounded or elliptical shape.

Answer: D
 Irregular galaxies can have a range of colors depending on the age and types of stars present, but they tend to be reddish in general. This is because irregular galaxies tend to have older, redder stars and less ongoing star formation.

Incorrect choices:
A) This is not true, as irregular galaxies can have a mix of different ages of stars.
E) This is not true, as irregular galaxies do not have well-defined spiral arms.

Which of the Following Is True About Irregular Galaxies