The Living World Test - 2

Oryza sativa is a cultivated species of rice. Oryza is a genus which includes some species of grasses (2 cultivated and 20 wild species). Sativa means cultivated. Because it is a cultivated type of rice, sativa indicates its specific epithet.

Forests are the habitat for many endangered and threatened species. Deforestation leads to the destruction of the habitat of animals and hence may lead to extinction.

The family has a group of interrelated genera. Organisms which belong to one family show less similarities as compared to those which belong to the same genus or species.

The first word in binomial nomenclature is the genus to which the organism belongs, and it is called the generic name. The second word is the name of the species to which the organism belongs, and it is called the specific epithet.

Aristotle divided animals based on the presence or absence of red blood cells. Anaima are animals which do not have red blood cells and enaima are animals which have red blood cells.

All living organisms have common genetic material of the same type but to varying degrees. All organisms also have common cellular organisation.

Yeast exhibits anaerobic respiration. In the absence of oxygen, yeast breaks down sugar and forms ethanol and carbon dioxide. Due to the formation of carbon dioxide, bubbles are observed in the test tube.

Stepwise arrangement of all categories for classification of plants and animals is called taxonomic hierarchy.

Green plants synthesise their own food by the process of photosynthesis; however, animals are directly or indirectly dependent on plants for their food.

Between 1707 and 1778, Carolus Linnaeus published his artificial system based exclusively on floral characters. Linnaeus’s sexual system based on floral characters is the most advanced artificial classification.