Phylum Aschelminthes In phylum Aschelminthes, the organisms also called roundworms because the body is circular in cross-section. These organisms are endoparasites. They are cylindrical, unsegmented, and triploblastic animals. Characteristics Features of Aschelminthes: Habitat– These animals existing as free-living, aquatic, and terrestrial or may be found as a parasite in plants Read more…
Phylum – Porifera – (Pore- bearing) Porifera: these are commonly known as sponges. These consisting the most primitive multicellular animals. These are pore-bearing animals, the body does not consist of organs. the porifers can regenerate their lost parts. The phylum includes around 5ooo species. These are the first multicellular animals. Read more…
Animal kingdom – Classification What was the need for Classification? In short, we can summarise the need for classification became very important as millions of species of animals are found on the earth. So the classification helps in assigning a systematic position to newly described species. What is the Basis Read more…
Angiosperms (Angios- vessel, sperma- seeds) Angiosperms are flowering plants, in which the flower is developed by ovule and pollen grain. Seeds found always enclosed in fruits in angiosperms. These are the most familiar plant-like mango, peas, coconut, wheat, and rice. The angiosperms diversified extensively during the Early Cretaceous (Cenozoic era), Read more…
Gymnosperms: The gymnosperms are spermatophytes i.e. seed-producing plant. The Gymnosperms (Gymno: naked, Sperma-seed) are the form of plant in which the ovules are not enclosed by the ovary wall. Ovule remains uncovered i.e. naked before and after fertilization. After fertilization, developed seeds are also naked. the smallest group of the Read more…