Evolution of Life Quiz

It marks the sudden appearance of fossils resembling modern animal phyla in the Cambrian period.

Roughly 450 million years ago.

365 million years ago.

<p>By 700 million years ago.</p> Signup and view all the answers

<p>The oldest macroscopic fossils of animals date back to 560 million years ago and include Kimberella.</p> Signup and view all the answers

<p>Animals originated about 700 million years ago.</p> Signup and view all the answers

<p>Self replication and metabolism</p> Signup and view all the answers

<p>Vesicles</p> Signup and view all the answers

<p>Sedimentary rocks</p> Signup and view all the answers

<p>Species that existed for a long time, were abundant and widespread, and had hard parts</p> Signup and view all the answers

<p>Adenine (A) and guanine (G)</p> Signup and view all the answers

<p>Strata</p> Signup and view all the answers

<p>The 'snowball Earth' hypothesis suggests that extreme glaciation periods confined life to specific regions, affecting the evolution and diversity of organisms.</p> Signup and view all the answers

<p>Endosymbiosis is when one cell lives within another cell, leading to a mutualistic relationship. This process is thought to have given rise to organelles like mitochondria and plastids in eukaryotic cells.</p> Signup and view all the answers

<p>Comparisons of DNA sequences suggest that the common ancestor of multicellular eukaryotes dates back to 1.3 billion years ago.</p> Signup and view all the answers

<p>The Ediacaran biota were soft-bodied organisms that lived from 575 to 535 million years ago. They were larger and more diverse, representing an important stage in the evolution of life before the Cambrian explosion.</p> Signup and view all the answers

<p>The evolution of eukaryotic cells allowed for a greater range of unicellular forms, paving the way for a second wave of diversification that led to the evolution of multicellularity in algae, plants, fungi, and animals.</p> Signup and view all the answers

<p>Serial endosymbiosis proposes that mitochondria evolved before plastids through a series of endosymbiotic events. This process led to the development of organelles with similarities to prokaryotic cells.</p> Signup and view all the answers