Two tree species live and compete for space on the side of a sleep mountain in N
ID: 83004 • Letter: T
Question
Two tree species live and compete for space on the side of a sleep mountain in Nepal. The Annapurna blue fir is found high on the mountain, just below the permanent snow line where the temperatures regularly fall below freezing at night, even in the summer, while the Phewa ash is found low on the mountain where the temperature is significantly warmer through all seasons and especially during spring and summer. Removal experiments showed that the ash competitively excludes the blue fir from the lower part of the mountain. Further observations showed that the ash cannot survive high on the mountain because temperatures are too low throughout the growing season and its seedlings never survive because they freeze. Fill in the blanks. The blue fir's realized niche is ____its fundamental niche and the ash's realized niche is _ its fundamental niche. the same as smaller than larger than the same as larger than smaller than smaller than, larger than smaller than, the same asExplanation / Answer
Fundamental niche is the range of environmental conditions in which a specied survives.
And realised niche is range of environmental conditions in which a species is really found.
As given in question Blue fir found in high mountain at low temperature, it can also survive the high temperature in lower part of mountain but competitively excluded by ash.
Thus fundamental niche for blue fir includes both lower and high mountain, but realised niche is high mountain part. So realised niche is smaller than fundamental niche.
In case of Ash, it can survive in lower part of mountain and really found there only. It can't survive in low temperature of high mountain.
So fundamental niche and realised niche both are same fir Ash.
Answer for the question is last option. Blue fir's realised niche is smaller than its fundamental niche and ash's realised niche is the same as its fundamental niche.
Related Questions
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.