A new plant species is introduced to Daphne Major and produces small, thin seeds. This plant species is highly adapted to drought and after 5 years has replaced over 80% of the native plants that produce large seeds. How will this change affect the evolution of beak size in the medium ground finch population?
A. Small beaks will be favored under all rainfall conditions.
B. Large beaks will be favored under all rainfall conditions.
C. Small beaks will be favored in wet years and large beaks will be favored in dry years.
D. Large beaks will be favored in wet years and small beaks will be favored in dry years.
Answer: A
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Why do populations grow more slowly as they approach their carrying capacity?
A) Density-dependent factors lead to fewer births and increased mortality. B) Density-independent factors lead to fewer births and increased mortality. C) Hormonal changes promote higher death rates in crowded populations. D) Individuals voluntarily stop mating so that overcrowding does not occur. E) The incoming energy decreases in populations experiencing a high rate of increase.
In biology lab, you observe lumps of plant tissue. Your instructor tells you that they have been grown artificially and can produce new plants. Each lump is a(n)
A. scion. B. stigma. C. tetraploid zygote. D. callus. E. amnion.
Most fungi decompose dead plant material, but some feed on living plants
1.True 2.False
Microbial Syntrophy cleans up oil!
What will be an ideal response?