Circulation Immunity & Gas Exchange
rubabAnswer 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
saadiaFURTHER 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
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
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
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
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
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 Evolution
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…
OBJECTIVES OF THE FISHES – fisheries mcqs with answers
OBJECTIVES OF THE FISHES Multiple Choice Questions MCQs 1. Adaptive radiation in fishes started about number of million years ago: (a) 1200 (b) 500 (c) 1000 (d) 1500 2. Bony…
SUBJECTIVE QUESTIONS OF THE FISHES
SUBJECTIVE QUESTIONS OF THE FISHES Describe evolutionary perspective of fishes. Describe phylogenetic relationships of fishes. Discuss whether evolution of fishes takes place in marine or fresh water environment. Give characters…