Question

______ is considered as pioneer community in xerarch?
a. Planktons
b. Algae
c. Crustose lichen
d. Foliose lichens​

Answer 1

Answer:

c. crustose lichen

Explanation:

lichens are association of algae and fungi.

hope it helps. have a nice day.

Answer 2

Answer:

In xerarch, crustose lichen is regarded as a pioneer community, hence c is the right answer.

Explanation:

pioneer community, the first biotic community to form in a barren region. The Pioneer community has colonised a previously barren region and is made up of a modest number of species. The environment is adverse to the pioneer community. In this colony, creatures' lives will be short.

• Xerarch succession occurs in arid environments and progresses from xeric to mesic circumstances.
• Lichens are typically the pioneer species in xerarch succession.
• Lichen secretes acid in order to dissolve rock, which aids in weathering and soil formation.

In xerarch, the right succession order is:

lichen crustose—> yearly herbs stage—> herbaceous plant stage—> shrubs stage—> forests