Grade 10 Life Sciences (TVM)

The formation of glaciers during an ice age leads to….

• An increase in sea levels

• An increase in oxygen levels

• Drop in sea levels

• Drop in oxygen levels.

The immediate ancestors of birds are

• Reptiles

• Mammals

• Fish

• Amphibians

Modern Humans first appeared on Earth between ….

• 5000 and 10 000 years ago

• 300 000 and 600 000 years ago

• 50 000 and 100 000 years ago

• 4 and 5 Million years ago

A period in the earth’s history where global temperatures plummet and there is extensive glaciation is known as….

• The greenhouse effect

• A cold spell

• A hole in the ozone

• An ice age

Used to estimate the age of a fossil

• Relative Dating

• Digging

• Research

• Radiometric Dating

You are a fossil hunter. Which one of the following are you least likely to find in a fossil?

• Bone’

• Leaves

• Teeth

• Muscle

Fossils are most commonly found in

• Igneous Rocks

• Sedimentary rocks

• Metamorphic rocks

• Volcanic rocks

Which gas was likely absent in early Earth’s atmosphere?

• Nitrogen

• Oxygen

• Carbon Dioxide

• Water Vapour

The first organisms that could live without oxygen were:

• Multicellular fungi

• Photosynthetic plants

• Anaerobic bacteria

• Aquatic animals

The “Age of Reptiles” refers to which era?

• Cenozoic

• Mesozoic

• Palaeozoic

• Precambrian