AP BIOLOGY

ANIMAL BEHAVIOR

SOCIAL BEHAVIOR

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which of the following is the essential and dominant characteristic of primary ecological succession?
A
decomposition by bacteria and fungi
B
replacing new trees after a forest fire destroyed all the old growth
C
soil building
D
biological magnification of toxins in food webs
Explanation: 

Detailed explanation-1: -Primary succession occurs when new land is formed or bare rock is exposed, providing a habitat that can be colonized for the first time. For example, primary succession may take place following the eruption of volcanoes, such as those on the Big Island of Hawaii. As lava flows into the ocean, new rock is formed.

Detailed explanation-2: -Primary succession begins on rock formations, such as volcanoes or mountains, or in a place with no organisms or soil. Primary succession leads to conditions nearer optimum for vascular plant growth; pedogenesis or the formation of soil, and the increased amount of shade are the most important processes.

Detailed explanation-3: -Characteristics of Ecological Succession It is a systematic procedure of community development. It involves variations in species structure and it increases the diversity of species. Nutrient variation regulates the settlement of new communities. Succession operates in a stabilized ecosystem.

There is 1 question to complete.