Please help with the following questions STAT, will rate. Provide complete answe
ID: 301870 • Letter: P
Question
Please help with the following questions STAT, will rate. Provide complete answers. Thank you Please help with the following questions STAT, will rate. Provide complete answers. Thank you
uestion T4 1.67 pts Despite their multiple adaptations, amphibians are still restricted to moist environments. Which are the three main reasons for that still tie amphibians to water? Gills are delicate and require the buoyancy of water to support them Skin has to kept moist for gas exchange External fertilization needs water Eggs have no protection from dehydration Filter-feeding of suspended particles in water D Question 15 1.67 pts An advantage of asexual reproduction is that it O allows the species to endure long periods of unstable environmental conditions. O enhances genetic variability in the species. O enables the species to rapidly colonize habitats that are favorable to that species O produces offspring that respond effectively to new pathogens
Explanation / Answer
Q.14 . Options b, c, d, e. are correct. As we know that frogs have evolved from fishes, they do have many charecters of fishes. They use mostly skin for exchange of gases, so skin must be moist. Eggs still not became cledoic. Their tadpoles are just swimmers.
Q.15. Options a,b,d are correct. Sexual reproduction always ensures variation because of crossing over of chromosomes during meiosis and genetic recombination during fertilisation. Hence it can overcome all obstacles in the coming generations.
Q.16. Option `a´ is correct. Fertilizing eggs on land and carrying tadpoles on their back is not only to get warm climate but also to make sure that their babies are safe gaurded from predators and avoid the females to mate with other males.
Q.17. Option b, c. are correct. These species are known to be natural hybrids. In many cases there are no males. They still show heterozygosity by recombining sister chromosomes.
Q.18. Option a,b,c. are correct. The principle factor that increases absorption is the is the surface area of intestine. So more length, projections in the form of villi and folds on epithelial cells would increase the surface and thus absorption.