OBJECTIVES
saadiaOBJECTIVES Multiple Choice Questions MCQs 1. Portuguese man of war is: (a) Hydra (b) Physalia (c) Sea anemone (d) 550 Jelly fish 2. Multicellular organisms formed year ago: (a) 400 …
Protection , Support & Movement in Animals
rubabIntroduction An animal is wrapped in a protective covering, the integument, which may be as simple as the delicate plasma membrane of an Amoeba or as complex as the skin…
SUBJECTIVE QUESTION
SUBJECTIVE QUESTION Write note on origin of multicellularity? How was animal originated on land? Give general characteristics of phylum Porifera? Write note on body wall and skeleton of sponges? Write…
FURTHER PHYLOGENETIC CONSIDERATIONS
FURTHER PHYLOGENETIC CONSIDERATIONS Debate is still going on the position of these phyla. There are different views aboutthe origin of these phyla 1. Polyphyletic: It means that all phyla have…
PHYLUM CTENOPHORA (Or. kteno, comb + phoros, to hear)
PHYLUM CTENOPHORA (Or. kteno, comb + phoros, to hear) Animals in the phylum Ctenophora are called sea wnalnuts or comb jellies. This phylum has 90 described species. These all species…
CLASSIFICATION
CLASSIFICATION Phylum coelentrata has four classes: 1. Class Hydrozoa Hydrozoans are small common cnidarians. Most of the cnidarians are marine. But this class of cnidarians has also freshwater species. Most…
OBJECTIVE OF GENE FREQUENCIES
abidaFour options are given at the end of each statement. You should encircle one option from them. Which of the followings should be large for Hardy Weinberg theorem: (a) Gene …
MODEL SUBJECTIVE QUESTION OF GENE FREQUENCIES
Write note on modern synthesis. 2 Discuss Hardy Weinberg theorem. 3 Write note on genetic drift. 4 Write note on gene flow and mutation. 5 Write note on different modes…
DEFINITIONS AND KEY POINTS OF GENE FREQUENCIES
Terms Definitions Evolution The individuals of the same species that occupy a give area at the same time and share a unique set of genes i called population. Allele…
MOLECULAR EVOLUTION
The structure and functions are observable on a large scale. Therefore, many evolutionists study changes in animal structure and function. - Its examples are change in the shape of bill…