Quiz on Life and Evolution

How old is the universe?

• 3.5 billion years

• 4.6 billion years

• 2.3 million years

• 1.1 billion years

Life on Earth began about:

• 4.0–4.6 billion years ago

• 3.5–4.0 billion years ago

• 2.1 billion years ago

• 210 million years ago

The first ancestor of all life was:

• Eukaryotic

• Fungi

• Prokaryotic

• Protist

Early cells were:

• Aerobic (use oxygen)

• Anaerobic (no oxygen)

• Photosynthetic

• Multicellular

Why is it hard to find evidence of early life?

• Cells are too large

• Fossils are everywhere

• Rocks were destroyed by tectonic plates

• Fossils never existed

The oldest microfossils are about:

• 4.6 billion years old

• 3.5 billion years old

• 2.3 million years old

• 665 million years old

Stromatolites are:

• Ancient mountains

• Layers of rock made by bacteria

• First animals

• Fossil plants

Biomarkers are:

• Substances only in nonliving things

• Substances found in all organisms

• Substances specific to certain cells

• Types of fossils

Eukaryotes have:

• DNA floating in cytoplasm

• No nucleus

• DNA enclosed in a nucleus

• No genetic material

The first eukaryotes were:

• Protists

• Animals

• Fungi

• Plants