Quiz_Lichens

Explanation:Helotism describes the master-slave relationship in lichens, where the fungus (master) controls the algae (slave). The fungus provides a protective environment, while the algae produce nutrients through photosynthesis.

Explanation:Lichens are highly sensitive to air quality and are used as bioindicators of air pollution. Their presence or absence can provide valuable information about the levels of pollutants in the environment.

Explanation:Lichens are among the first organisms to colonize bare rock surfaces, initiating the process of soil formation and ecological succession. They play a crucial role in breaking down rocks into soil over time.

Explanation:Lichens are sensitive to various pollutants, especially sulfur dioxide. Their presence or absence in an area can indicate the level of air pollution, making them valuable bioindicators.

Explanation:Cyphellae are small, pore-like structures found on the lower surface of some lichens. They facilitate gas exchange, similar to the function of stomata in plants.

Explanation:Cephalodia are specialized structures in lichens that help retain moisture. They contain cyanobacteria and are often found on the surface of the lichen thallus.

Explanation:Lichens grow very slowly, often only a few millimeters per year. Their slow growth rate is due to their reliance on photosynthesis and the limited availability of nutrients in their environments.

Explanation:The majority of lichens consist of green algae and ascomycete fungi. This combination allows them to thrive in various environments, from arid deserts to moist forests.

Explanation:Cyphellae are small, pore-like structures found on the lower surface of some lichens. They facilitate gas exchange, aiding in the respiration of the lichen.

Explanation:Lichens are often the first organisms to colonize bare rock surfaces, initiating the process of ecological succession in a lithosere. Their ability to break down rocks into soil makes them pioneers in these environments.