Ecology and Biomes Quiz

The transfer of fertilised eggs or embryos from one female to another, such as from a rare species into a female of a closely related species that is more common.

• Cloning

• Embryo transfer

• Genetic modification

• Cross-breeding

The movement of ocean currents caused by changes in temperature, salinity and density.

• Thermohaline circulation

• Tidal waves

• Oceanic drift

• Surface currents

Which of the following is an example of an adaptation in plants?

• Leaves changing color in autumn

• Thorns on a cactus

• Trees losing leaves in winter

• Flowers blooming in spring

The survival and distribution of species is mainly controlled by what type of factors?

• Biotic factors

• Abiotic factors

• Genetic factors

• Environmental factors

Identify three important abiotic factors that affect species distribution.

• Light, pH, water

• Food supply, pollination, seed dispersal

• Disease, mineral nutrients, water

• Light, seed dispersal, disease

During ecological succession, which stage comes after grasses and perennials?

• Climax forest

• Mosses and lichens

• Woody pioneers

• Shrubs

What happens to the abiotic conditions as ecological succession progresses?

• They become more extreme

• They become less extreme

• They remain unchanged

• They become unpredictable

What are the first organisms to colonize a new habitat called?

• Climax species

• Secondary species

• Pioneer species

• Dominant species

What happens to pioneer species as new colonizers arrive and populations increase?

• They become more dominant

• They may die out

• They remain unchanged

• They become the climax community

What is the typical change in light levels during ecological succession?

• High to low

• Low to high

• High to higher

• Low to lower