O2
The correct option is (B) : water
Although the moon is a satellite of the earth, it is not feasible to live there in the same way as on the earth for a variety of reasons. The first problem is that the moon lacks water, which is a need for life. Because of water, life initially arose on earth, and we cannot picture a world without water.
List I | List II | ||
---|---|---|---|
A | Two or more alternative forms of a gene | I | Back cross |
B | Cross of F1 progeny with homozygous recessive parent | II | Ploidy |
C | Cross of F progeny with any of the parents | III | Allele |
D | Number of chromosome sets in plant | IV | Test cross |
Origin of Life is considered as one of the most important phenomena that happened in the history of biology. Through this phenomena we got to know about the existence of atmosphere, special gases, different forms of species, different galaxies and so on.
Over the years there have been changes that happen in the formation or the characteristics of the species and because of which there have been the development of new kinds of species and all this happened through the involvement of the natural process and thus came to be known as the evolution.
Charles Darwin in his book “On the origin of the species” tells about how the organisms have evolved over the different generations by inheriting the different forms of characteristics such as physical or the different behavior traits.