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प्रश्न
Corals are
विकल्प
Poriferans attached to some solid support
Cnidarians, that are solitary living
Poriferans present at the sea bed
Cnidarians that live in colonies
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उत्तर
Cnidarians that live in colonies
Explanation -
Corals are cnidarians (coelenterates) that live in colonies. Examples of some corals are Corallium (red coral), Meandrina (brain coral), Astraea (star coral), etc.
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संबंधित प्रश्न
Give some examples of taxa at different hierarchical levels.
Try to collect all the currently accepted meanings for the word ‘species’. Discuss with your teacher the meaning of species in the case of higher plants and animals on one hand and bacteria on the other:
Define and understand the following term:
Phylum
Define and understand the following term:
Family
Observe the figure and answer the questions given below.
a) To which phylum these organisms belong?
b) Name the substance with which their body is covered.
c) Name their organs of locomotion.
Classify the following organisms based on the absence/presence of true coelom (i.e., acoelomate, pseudocoelomate and coelomate)
Spongilla, Sea anemone, Planaria, Liver fluke Wuchereria, Ascaris, Nereis, Earthworm, Scorpion, Birds, Fishes, Horse.
Order is a number of related families having common characters placed in an order.
Identity the incorrect statement:
International Code of Botanical Nomenclature (ICBN) has provided a code for classification of plants. Give hierarchy of units of classification botanists follow while classifying plants and mention different ‘Suffixes’ used for the units.
Define a taxon. What is meant by taxonomic hierarchy. Give a flow diagram from the lowest to highest category for a plant and an animal. What happens to the number of individuals and number of shared characters as we go up the taxonomical hierarchy?
