Unit 2 Variety of life

Which is biodiversity?

• It’s all the living things that inhabit the Earth in terms of the number of cells.

• It’s the variety of living things that inhabit the Earth in terms of species and ecosystems.

• It’s the variety of non-living things that inhabit the Solar System in terms of species.

There is a higher degree of biodiversity in an ecosystem with (a)   species.

The criteria to classify living things must be:

• Ambiguous and subjective

• Objective and discriminatory

The taxonomic classification classifies living things in ________ which are living things with similar characteristics (lynx), they ______ reproduce, they use a binomial nomenclature (scientific name).

• genre / can

• genre/ can't

• species /can

• species /can't

The first living thing was eukaryote.

• True

• False

The first living things appeared _____ billion years ago, they ______ and then, evolved by _________ _______.

• 2,5 / expanded / natural selection

• 3,5 / expanded / natural selection

• 2,5 / eliminated / natural election

• 3,5 / eliminated /natural election

Differences between individuals of the same species.

• Change

• Super-production

• Natural selection

• Variety

Organisms compete for resources.

• Variety

• Change

• Super-production

• Natural selection

Some characteristics help individuals to survive.

• Variety

• Super-production

• Natural selection

• Change

From one generation to the next the species changes.

• Change

• Variety

• Super-production

• Natural selection