CUA 8 Review

Why is it crucial for researchers to employ a uniform system of classification when documenting the various species of snakes worldwide?

• To avoid confusion and facilitate easier communication and understanding among scientists from different regions

• To increase the complexity of snake species classification for academic purposes

• To assist in the commercial trading of snake species

• To make it more challenging for amateur herpetologists to identify snake species

Mistletoes are plants that grow on trees. The mistletoe infects the plant tissue, extracting nutrients from the plant's cells. The relationship between mistletoes and trees can best be described as –

• competition

• commensalism

• predation

• parasitism

The table shows the predominant plant types on a piece of land in the years following a disturbance. Based on the timeframes, this is most likely

• primary succession

• secondary succession

Organize these options into the right categories

Groups:

(a) Primary succession

,

(b) Secondary succession

• Bare rock

• forest fires

• Starts with soil

• abandoned property

• quicker

• Pioneers are lichens and mosses

• Glaciers retreating

• Pioneers are grasses

• No soil

• New islands forming

• Volcanic Eruptions

• hurricanes

Based on the key, which two characteristics are shared by the Rose-crested grosbeak and the American Goldfinch? Select TWO correct answers.

• Has a short beak

• Does not have reddish coloration

• Is not mostly black and white

• Does not have a short beak

• Does not have a crest

Categorize the following into the correct kingdoms.

Groups:

(a) Plants

,

(b) Both

,

(c) Fungi

• Contains both unicellular & multicellular

• Non-mobile

• Have a cell wall

• Heterotrophs

• Cell wall made of Chitin

• Only multicellular

• Trees

• Eukaryotic

• mushrooms

• Cell wall made of cellulose

• Autotrophs

Rabbits have a mutualistic relationship with the bacteria found in their guts. This bacteria allows them to breakdown the cellulose in the grass that they eat to get nutrients from it. Which statement BEST explains the relationship between the rabbits and the bacteria in their guts?

• Bacteria will eventually kill their host rabbits.

• The bacteria cause infections in rabbits.

• The bacteria steals nutrients and resources from rabbits to live.

• The bacteria improve the survival of the rabbits.

Between 2005 and 2016, Siberia experienced an increase in exposed rock due to melting ice. Will primary or secondary succession occur?

• Primary

• Secondary

Between 2005 and 2016, Siberia experienced an increase in exposed rock due to melting ice. Which timeline describes how plant diversity on the exposed rock will change over time?

• Mosses completely cover rock. Small shrubs grow between cracks of rock. Small trees become rooted in the soil.

• Mosses completely cover rock. Small trees become rooted in the soil. Small shrubs grow between cracks of rock.

• Small shrubs grow between cracks of rock. Mosses completely cover rock. Small trees become rooted in the soil.

• Small shrubs grow between cracks of rock. Small trees become rooted in the soil. Mosses completely cover.

A farmer adds a chemical to his soil that will absorb all of the nitrogen before it can be absorbed by his plants. What effect will the lack of nitrogen have on the plants in that area?

• The plants will not be able to grow.

• The plants will grow faster than before.

• The plants will be replaced with new plants.

• The plants will evolve to no longer need nitrogen.