Diversity in Living Organisms Test - 1

Starfish or sea stars are star-shaped echinoderms. Jellyfish are invertebrates belonging to the phylum Cnidaria. Flying fish is also called exocoetus. It is a marine fish. The cowfish is also called the horned boxfish and is recognisable by its long horns that protrude from the front of its head.

The locomotory organ in paramaecium is cilia and euglena moves with the help of flagella.

Planaria, tapeworm and liverfluke are all flatworms, whereas ascaris is a roundworm.

Air pollutants dissolved in rainwater, especially sulphur dioxide, can damage lichens, and prevent them from growing. This makes lichens natural indicators of air pollution.

Yeasts are eukaryotic, single-celled micro-organisms classified as members of the kingdom Fungi. A mushroom is the fleshy, spore-bearing fruiting body of a fungus, typically produced above ground on soil or on its food source.

An air sac is an extension of a bird's lung cavity into a bone or other part of the body. The air sac permits a unidirectional flow of air through the lungs.

Monera is the taxonomic kingdom that includes prokaryotic organisms, which are organisms with cells that do not have a nucleus. Monera breaks down into four bacterial subcategories: archaebacteria, Actinomycetes, mycoplasms and eubacteria.

Spongy bones have honeycomb-like pockets, called trabeculae. In birds, these trabeculae widen to become air sacs. This makes the bones light and helps in flight.

Metamerism is the phenomenon of having series of body segments similar in structure, though some of them perform special functions. The body is divided into a series of segments, both externally and internally. Each segment is called a metamere and the segmentation is called metameric segmentation.

The body of coelenterates is radially symmetrical.