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What are the problems that vertebrates required to solve to adapt to the terrestrial environment as they came from the aquatic habitat? How evolution does solve those problems?
The main problems vertebrates coming from water needed to solve to adapt to the terrestrial environment were the following: the difficulty to avoid dehydration; the problem of elimination of wastes in a medium where water is fewer available; the problem of protection against nocent solar radiation; the problem of gamete locomotion in the environment for fecundation; the problem of gas exchange, earlier completed by direct contact of water with gills; the problem of body support, as it was water that played this role in fishes.
Reaction specificity Some enzymes catalyze only one reaction acting on a specific substrate. Example: urease and catalase acts only on urea and hydrogen peroxide,
Q. Managing diarrhoea in children? Managing diarrhoea in children is of great concern. The guidelines for the same are as follows: 1. The first objective is to rehydrate the
Dendrology : This is the study of all kinds of trees. Dendrology we can also say it xylology it is the science or study of wooded plants like trees, shrubs, and lianas. There is no
Q Comparing toxicity and the need for dilution in water how different are the uricotelic and ureotelic excretions? What are some examples of animals that present these respective t
Cobalt (Co) - Micronutrients The Co concentration in the dry matter of plants grown in soil normally lies around 0.02 to 0.5 ppm. In soils the content varies from 1 to 40 ppm.
What are cilia and flagella? Cilia and flagella are structures found in prokaryotes as well in eukaryotic cells. They play defense, nutrition and movement roles for the cell. I
Development of Pollen in Cyperaceae In all members of the Cyperaceae out of the four nuclei formed after meiosis, only one functions, the others degenerate. The functional nuc
Q. Goal of dietary management for GDM? The goal of dietary management for GDM is to provide the pregnant woman with adequate energy, commonly known as "calories", and to ensure
Define Reagents for Measurement of pH? Buffer solutions of pH 4, pH 7 and pH 9.18 for calibration and an unknown solution (i.e. solution of unknown pH) You can prepare these
State two characteristics of humans which distinguish them from other primates. Two features which differentiate humans from other primates are their upright posture and their
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