The climax-pattern theory states that not only climate, but several other factors, determine the characteristics of the climax community.
Unlike, monoclimax and polyclimax theories which state that climate is the only determining factor, climax-pattern theory states that characters of the climax communities are determined by the total environment of the ecosystem not only by single factor.
According to climax-pattern theory, there are more climax communities that are continuous and varying gradually along environmental gradients.
Genetic data suggests many frog species that live in Madagascar and India share a common ancestor that lived on the India-Madagascar landmass is best described by
(b)Geographic separation led to divergence in the gene pool, resulting in a new species
Explanation:
- The island's geography, geology, and climate have provided opportunities for species to evolve and diversify in isolation. Its species are a mix of those that have been living and evolving there for many tens of millions of years and those that arrived more recently and subsequently diversified.
- Some of Madagascar's present species are there because they "rode there" on the continents and were left on the island when it separated from India.
Answer:
Answer is option B, i.e. ecological succession.
Explanation:
Ecological succession can be understood as a slow process of change that takes place in the ecology or ecosystem over a given period of time. One species takes over the other species naturally and gradually with changing condition that falls favorable for the former. Here, in the above mentioned case, the Raspberry plants took over the habitat of Pine trees after they were knocked down by the winds. With the passage of time and favorable conditions for the pine seedling, they took over the plantation area again.
Answer:
c. Living things are made of the same basic building blocks and use them in the same way.
Explanation:
Living things are made up of a genetic material called DNA, which is a type of nucleic acid. This DNA stores the genetic information needed by the cell to produce useful products (proteins). However, nucleic acids are made up of building blocks called NUCLEOTIDES that makes up the genetic code.
One unique characteristics of this genetic code is that it is NEARLY UNIVERSAL i.e. it is same in all living things and used the same way. Hence, according to this question, Wheat germ DNA is similar to cheek cell DNA and bacterial DNA because living things are made of the same basic building blocks and use them in the same way.