<span>The correct option is C. The atmosphere is defined as the envelope of gases that surround the earth. The atmosphere is made up of nitrogen, oxygen, argon and other gases. The nitrogen has the highest percentage composition of 78%. The atmosphere is divided into five layers, the layer that is most close to the earth is called troposphere.</span><span />
Speciation, the evolutionary process by which new species are formed, is clearly responsible for the ultimate generation of species diversity over geologic time.
Answer: The question is not complete, we do not know the group that we are going to match with the the pioneered group. Not to worry we will figure something out for you to be able to answer similar question(s). Check below.
Explanation:
PHYLOGENY deals with the history of evolution of plants and animals of different species. It involves the use of comparative anatomy, paleontology and embryology to determine the evolution of different species of plants and animals.
According to scientific researches, there are claims that plants started not on the terrestrial habitat/LAND but in water(aquatic habitat). According to the Researches made, the first plant actually came from Green algae. Plants are photosynthetic organisms but, the first organisms to photosynthesize were bacteria living inside water(aquatic habitat).
It was until about 350 million years (or less) that plants were successfully adapt to life in terrestrial habitat)/LAND.
ADAPTATIONS OF PLANTS TO LIFE ON LAND:
In order for plants to survive on LAND, several adaptations has to be developed. They are giving below:
==> Development of cuticle and stomata.
===> Development of vascular tissue.
===> Alternation of generation.
A good example is ANGIOSPERM PIONEERED PLANTS.
Answer:
The correct answer will be option-C
Explanation:
The CsCl gradient centrifugation in Meselson Stahl experiments is done to separate the bands of the DNA containing isotopes on the basis of difference in the density.
In the experiment, bacterial cultures were grown in the medium of 15N and 14N but if we repeat the experiment with P32 and P31 instead of 15N and 14N and centrifugation is performed then the banding pattern will be the same as of the previous experiment as the method of the replication is same that is semi-conservative.
Thus, Option-C is the correct answer.