Tag: criteria for new system of classification

In Animalia (kingdom of multicellular consumers), the members are eukaryotic, multicellular, heterotrophic consumers. They feed on other organism and thus called as consumers. They contain glycogen or fat as reserve food.

Liver flukes and tapeworm are Platyhelminthes while roundworm and guinea worm are nematodes.
Prawn, millipede and crab are arthropods, while Nereis is an annelid.
Sea urchin and sea lily are echinoderms, while sea fan and sea pen are Cnidarians.
Oyster, ship worm, octopus, cuttle fish all belong to the phylum Mollusca.
Thus, the correct answer is option B.

The attainment of sexual maturity with the retention of at least some larval morphology and reproduction of larval individuals is known as paedogenesis. Hence, the correct answer is option A.

Monocystis is an endoparasite in the seminal vesicle and coelom of earthworms. It belongs to order of Gregarinida. Monocystis is a monogenetic parasite, which means its life cycle is completed in a single host that is earthworm. Hence, option A is correct.

Turtles are reptiles characterised by a special bony or cartilaginous shell. They are air-breathing animal which lays eggs on land.

Animals are multicellular eukaryotes that form the kingdom Animalia. They occupy a variety of habitats and are found all across the world. It has been estimated that there are around 7 million animal species in the world out of which, 1.5 million have been discovered so far and are being studied. Out of these 1.5 million living animals, 1 million are insects. 

The organisms placed in the kingdom Animalia are multicellular, eukaryotic organisms which exhibit certain features. These organisms have a heart which is divided into different chambers. The contraction and relaxation of these chambers help in the circulation of the blood. The animals are oviparous which lay eggs and there are some animals which give birth to the young ones. These animals are coelomate as there is a gastrovascular cavity in the animals. 

If the medium surrounding the cell has a higher water concentration than the cell,i.e., it is very dilute (hypotonic solution), then the cell will gain water by osmosis and will swell up.

•  A cockroach has 10 pairs of spiracles on its body, out of which, two are present on its thorax and the rest are present on its abdomen.
  
• The alimentary canal of Pheretima consists of pharynx among other organs.
  
• The body of the frog is divisible into head and trunk.
  

Kingdom Animalia is classified into 36 phyla on the basis of similarity and dissimilarity. Phyla are further divided into the class.
Phylum Porifera belongs to the animal kingdom which has the cellular level of organization.
Phylum of the animal kingdom which has tissue level of organization are Arthropoda, Platyhelminthes, Nematoda, Cnidaria, Annelida, Echinodermata, Mollusca and Chordata.
Thus, the correct answer is option D.