SUBJECTIVE QUESTIONS IN AMPHIBIANS Describe phylogenetic relationships of amphibians. How did amnoites and anamniotes lineages evolve? Write note on Salamanders. Write a brief not of ceacilians. Write note on Anurans.…
DEFINITIONS AND KEY POINTS FOR OBJECTIVES IN AMPHIBIANS TERMS DEFINITIONS Tetrapods The vertebrate with four legs are called tetrapods. Amniotes The vertebrate in which their embryo is covered by…
Answer of Question of Circulation Immunity & Gas Exchange Q. 26. What are the five types of respiratory surfaces animals use for external i respiration? An s. Protists and animals…
FURTHER PHYLOGENETIC CONSIDERATIONS IN AMPHIBIANS There is a problem in amphibian phylogeny. This problem is the relationship among the three orders of modern amphibians. There are two hypotheses about the…
Answer of Question of Circulation Immunity & Gas Exchange .Q .13. Describe a double circulatory circuit. Ans. The heart and blood vessels changed greatly as vertebrates moved from water to…
AMPHIBIANS IN PERIL Frogs and salandam are disappearing rapidly. We do not know the exact reasons of their disappearance. Some reasons are: 1. Local factors: Some local factors influence the…
EVOLUTIONARY PRESSURES IN AMPHIBIANS The lives of the most amphibians is divided into freshwater and land. Thus they show adaptations to both environments. The amphibians are supported by the buoyant…
Answer of Question Circulation Immunity & Gas Exchange Q.1. Why don't protozoa need a circulatory system? Ans. Because protozoa are small, with high surface - area - to - volume…
SURVEY OF AMPHIBIANS Amphibians occur on all continents except Antarctica. There are three orders of amphibians: Caudata, (salamanders), Anura, ( frogs and toads) and Gymnophiona (caecilians). ORDER CAUDATA (cauda, tail…
AMPHIBIANS EVOLUTIONARY PERSPECTIVE (amphibia, living a double life) Class Amphibia includes frogs. roads, salamanders and caecilians. Class name shows that amphibians move between water and land. They spend one stage…
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