Answer:
chlorophyll a
Explanation:
This is the pigment s that absorbs light in blue and red light wavelengths when illuminated by sunlight with all wavelength.However it reflects green light. This explains the reason why green plants appears green to our eyes,
the pigments are located in leave and stem of green plant.
Blue light has a wave length of 430nm, while Red wave length is 662nm
Biological communities evolve through ecological succession. Ecological succession is the change in the structure and composition of species in a specific ecological community over time that can be observed. Ecological succession can occur as a natural process of time, or it can be instigated by a sudden event, a wild fire, for example. There are natural changes that occur that effect the species type and variation that exists and thrive in the communities.
A what you expect to happen
The role of <u>pioneer species</u> in primary succession is to increase the diversity of a habitat after undergoing a disturbance making the soil stable and fertile for other organisms to inhabit.
Pioneer species are the first species to inhabit an area after it has undergone ecological succession.
<h2>Further explanation
</h2><h3>Pioneer species </h3>
- Pioneer species are the first organisms that invades an area after a disturbance to normalize it, thus making it habitable by other organisms.
- Pioneer species include microorganisms and organisms such as Fungi, algae, and Lichen, as well as abiotic factors such as water and wind. These organisms pave way for other organisms to grow in an area.
- Pioneer species are therefore the first stage of ecological succession and are usually hardy organisms that can withstand hostile environments.
There are two types of Ecological succession;
Primary succession;
- This is a type of succession that takes place in lifeless areas as a result of disturbances such as glaciers, lava flow from volcanoes, sand dunes, etc.
- These regions are not capable of sustaining life of organisms as a result of the disturbances caused by those factors.
<h3>Secondary succession </h3>
- Secondary succession is an ecological succession that results from disturbances such as forest fires, abandoned field or after occurrence of floods.
- The difference between the two types of ecological succession is the fact that; primary succession starts with bare rocks while secondary succession starts with existing soil and dirt.
- Additionally, it takes about a thousand years for primary succession to develop while secondary succession takes about a 100 or more years to develop.
Keywords; Pioneer species, Primary succession, secondary succession
<h2>Learn about;
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Level High school
Subject: Biology
Topic: Ecology
Sub-topic: Ecological succession