1. Two species live in the same area but breed in different parts of their habitat. These species are
A) geographically isolated.
B) ecologically isolated.
C) artificially isolated.
D) likely to produce hybrids.
2. A large population of animals is split in two by a physical barrier. Over time, the genetic make up of the two resulting populations becomes more and more different, until each population becomes a separate species. This is an example of
A) sympatric speciation.
B) allopatric speciation.
C) genetic drift.
D) reproductive isolation.
3. A rainforest is a highly complex habitat, with organisms living at various levels in the trees, on the ground, and underground. Is it possible to consider two populations living in the same tree to be geographically isolated?
A) No, because if they are in the same tree, they are in the same geographic area.
B) No, because if they are in the same square acre, they cannot be considered to be geographically isolated.
C) Yes, because they can still undergo sympatric speciation.
D) Yes, because there are so many habitats in one tree that the populations may never interact.
dont just all options use ur brain and ask for corrections
bye boy. No one asked you to comment. I obviously could not find the answers to these question hence me posting them.
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1. The correct answer is B) ecologically isolated. To determine the answer, we need to understand the different types of isolation. Geographical isolation refers to physical barriers that separate populations, such as mountains or bodies of water. Artificial isolation involves human intervention, like breeding animals in captivity. However, the given scenario states that the species live in the same area, so neither geographical nor artificial isolation applies. Therefore, the most appropriate answer is ecologically isolated. This means that the species breed in different parts of their habitat due to differences in ecological factors, such as different food sources or mating behaviors. This type of isolation can lead to the development of distinct traits and ultimately result in the formation of separate species.
2. The correct answer is B) allopatric speciation. To determine the answer, we need to understand the terms and processes involved. Sympatric speciation occurs when new species form from a single ancestral species in the same geographic location, without any physical barriers. However, the given scenario states that a physical barrier has split a population into two groups. Over time, the genetic makeup of these two resulting populations becomes more and more different, eventually leading them to become separate species. This is known as allopatric speciation, which involves the formation of new species due to geographic isolation. The physical barrier restricts gene flow between the two populations, allowing for independent evolutionary changes and the accumulation of genetic differences.
3. The correct answer is D) Yes, because there are so many habitats in one tree that the populations may never interact. To determine the answer, we need to consider the concept of geographic isolation. Geographic isolation occurs when populations are separated by a physical barrier, such as a mountain range or a body of water. In the given scenario, while the two populations may be living in the same tree, the rainforest itself is highly complex and composed of various habitats. Each habitat supports different organisms and ecological processes, resulting in limited or no interaction between populations residing in different parts of the tree. Therefore, despite being in close proximity, these populations can still be considered geographically isolated, as they do not have significant gene flow between them. This isolation can potentially lead to sympatric speciation, where new species evolve within the same geographic area due to other forms of reproductive isolation.