What is guintha ? why is it used ?

Name the plastid and pigment likely to be found in the cells of (a) petals of sunflower (b) ripe tomato.

Describe the response the kidneys have to dehydration and excessive water intake. what happens to the concentration of urine in each case ?

Zoo geographic regions are characterized by the presence of specific groups of animals these regions are determined by the taxonomic or phylogenetic relationships of animals. the map shows the zoogeographic regions proposed by the naturalist alfred russel wallace in 1876. the similarities of organisms in which two areas numbered above provide the best evidence for common ancestry between the organisms in both locations ?