Test on Ecological Succession: Community Change Over Time

Question 1: Annuals and herbs are typically the first species to appear in a primary succession.

A. Ano

B. Ne

Explanation: Primary succession involves lichens as the first species established on rock after a disturbance, not annuals and herbs. Annuals and herbs are pioneer species in secondary succession.

Question 2: During the intermediate species stage of ecological succession, are temperatures less extreme due to increased shade?

A. Ano

B. Ne

Explanation: In the intermediate species stage, ecological conditions change, and temperatures become less extreme as there is more shade.

Question 3: Which of the following characteristics accurately describe pioneer species in ecological succession, according to the provided study materials?

A. They typically thrive in shaded environments due to their slow growth rate.

B. They are hardy and able to withstand extreme variations in temperature and moisture.

C. They are replaced by other species as they modify the habitat, making it suitable for new colonists.

D. They usually have large seeds that are dispersed over short distances to quickly colonize disturbed areas.

Explanation: Pioneer species are described as hardy, able to withstand extreme variations in temperature and moisture. They also prepare the surroundings for later colonists by altering the environment, leading to their replacement by better-suited species. However, they do not grow in shade, and they have spores or seeds that can disperse over long distances, not large seeds over short distances.

Question 4: Which of the following describes the growth rate and establishment pattern of pioneer species?

A. They are typically fast-growing and establish slowly.

B. They establish rapidly but are often slow growing.

C. They establish slowly and are fast-growing.

D. They are both fast-growing and establish rapidly.

Explanation: According to the study materials, a general feature of pioneer species is that they 'establish rapidly although they are often slow growing'.

Question 5: A climax community is the last semi-stable stage or the endpoint of succession.

A. Ano

B. Ne

Explanation: A climax community is defined as the last semi-stable stage or the endpoint of succession.