UIL Science I

Carbon dioxide needed for photosynthesis enters the leaf via the __________.

• xylem

• stomata

• phloem

• chloroplast

This action doesn't involve a change in the chemical makeup of a substance.

• cooking

• burning

• cutting

A hot air balloon rising has which of the following energy transfers?

• thermal to mechanical

• mechanical to thermal

• radiant to mechanical

• mechanical to radiant

If a plant has low turgor pressure, th eplant appears to

• wilt

• change colors

• stand upright

• remain unchanged

The atmosphere of the Earth is primarily composed of

• oxygen

• nitrogen

• carbon dioxide

• argon

Which is not an impact to an ecosystem following tornadic activity?

• destruction of structures & plants

• storm surge

• water contamination

• disruption of the food chain

Soil is formed over time by which of the following processes?

• erosion & weathering of rocks

• erosion & decomposition of plants

• weathering of rocks & decomposition of biotic material

• weathering & erosion of biotic material

Which biomes of Texas once contained large herds of grazing herbivores?

• temerate forest

• tundra

• grassland

• savanna

In which geographic location would you expect to find the greatest species?

• Russia

• Egypt

• Panama

• United States

Ants communicate with one another using pheromones. Ants lay down pheromones to help others find a food source. This is an example of

• structural adaptation

• behavioral adaptation

• physical adaptation

• physiological adaptation