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Natalka [10]
3 years ago
11

Lichens are among the slowest-growing organisms, but their tolerance of environmental extremes enables them to colonize habitats

where few other macroscopic organisms can grow. They grow where neither the fungal partner (mycobiont) or the photosynthetic partner (photobiont) could survive alone, because they benefit from their unique symbiotic association. What mutualistic behaviors aid in the survival of both organisms?
A) The photobiont processes and provides nitrogen and carbon products to the mycobiont.
B) The photobionts are protected and able to grow in conditions in which they could not grow alone and in return release glucose in some form to the mycobiont.
C) The photobionts absorb mineral nutrients from the underlying surface or from minute traces of atmospheric contaminants while the mycobionts synthesize organic nutrients from carbon dioxide.
D) The photobionts produce ammonium and organic sodium compounds from N2 gas by sodium fixation; that in turn, aids the mycobionts in producing enzymes to decompose the substrate on which they live.
Biology
2 answers:
bekas [8.4K]3 years ago
7 0

Answer:

The correct option is B.

Explanation:

Lichens  is regarded as a mutual relationship between a mycobiont and photobiont, the relationship is targeted at enhancing their survival in extreme environments. The mycobiont is a fungal while the photobiont is usually a green alga or a mycobacterium. Each of the organism has their specific tasks; the mycobiont provides suitable habitat for the photobiont while the photobiont provide energy for the whole system.

eimsori [14]3 years ago
3 0

Answer:

The photobionts are protected and able to grow in conditions in which they could not grow alone and in return release glucose in some form to the mycobiont

Explanation:

The mycobionts help retain moisture for the algae. The algae undergo photosynthesis to produce-carbon based compounds, such as glucose, which is shared with the fungus.

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Another group of researchers also experimented with rats to learn how the hippocampus functions in memory processing ([link]). They created lesions in the hippocampi of the rats, and found that the rats demonstrated memory impairment on various tasks, such as object recognition and maze running. They concluded that the hippocampus is involved in memory, specifically normal recognition memory as well as spatial memory (when the memory tasks are like recall tests) (Clark, Zola, & Squire, 2000). Another job of the hippocampus is to project information to cortical regions that give memories meaning and connect them with other connected memories. It also plays a part in memory consolidation: the process of transferring new learning into long-term memory.

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Please Note: I did get most of this from google.

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