Diversity In Living World Questions

36 Practice QuestionsStart Practicing Now

[Medium]Roundworms belonging to phylum Aschelminthes represent an evolutionary advance over flatworms primarily because of which body cavity feature they poss...
[Hard]Three fundamental characters are shared by every chordate at some stage of life; which set correctly lists these defining chordate features?...
[Easy]Sponges of the phylum Porifera maintain a continuous water current through their body by means of a specialised canal system; which cells generate thi...
[Easy]Arthropoda is considered the largest phylum in the animal kingdom; which combination of features chiefly accounts for the enormous success of its memb...
[Medium]Coelenterates such as Hydra capture prey and defend themselves using specialised stinging cells; what is the correct name and location of these cells?...
[Hard]If the estimated number of described species on Earth is about 1.7 million and animals constitute roughly 70 percent of these, approximately how many ...
[Easy]In a lichen partnership growing on a bare rock surface, the photosynthetic algal partner contributes which essential function to the symbiotic associa...
[Medium]In the life cycle of a fern, the conspicuous leafy plant that bears spore-producing sporangia represents which phase of alternation of generations?...
[Medium]Certain prokaryotes survive in extreme salt-rich lakes, hot sulphur springs and the guts of ruminants because their cell walls possess an unusual stru...
[Hard]A botanist examining a flowering plant finds vascular bundles arranged in a ring, reticulate leaf venation and tetramerous flowers; to which group doe...
[Medium]Investigations on the tobacco mosaic virus revealed that its genetic material differs from that of most plant-infecting organisms because it is compos...
[Medium]Members of the brown algae owe their characteristic colouration to the dominance of a specific accessory pigment that masks chlorophyll; which pigment...
[Easy]Gymnosperms are distinguished from angiosperms by a feature of their reproductive biology in which the ovules display which particular condition?...
[Easy]Bryophytes are frequently described as the amphibians of the plant kingdom mainly because of which dependency in their life cycle?...
[Medium]A fungus reproducing sexually through ascospores borne inside sac-like asci, exemplified by Penicillium and yeast, is correctly assigned to which clas...
[Medium]Rapid proliferation of certain photosynthetic dinoflagellates in coastal waters can turn the sea red and cause mass fish mortality; this phenomenon is...
[Easy]While arranging organisms into a taxonomic hierarchy, which obligatory category lies immediately above genus and unites related genera sharing common ...
[Medium]A chemosynthetic autotrophic bacterium thriving in a sulphur spring obtains its energy in a manner that distinguishes it from photoautotrophs by relyi...
[Easy]When Whittaker proposed his five kingdom system in 1969, which principal criterion distinguished members of Kingdom Monera from those placed in Protis...
[Easy]Under the rules of binomial nomenclature, how should the scientific name of the mango, written as Mangifera indica, be correctly presented in print?...
[Medium]In a survey of a forest patch, 240 individual plants were recorded belonging to 60 distinct species. What is the average number of individuals per spe...
[Medium]Which characteristic is typical of cyanobacteria but absent in most true bacteria?...
[Easy]Which group within Protista is primarily responsible for 'red tides' due to population blooms?...
[Medium]What is absent in viroids that is present in typical viruses?...
[Easy]Lichens represent a mutualistic association between which two types of organisms?...
[Hard]Which molecular feature is most commonly compared to infer deep evolutionary divergence among major eukaryotic lineages?...
[Hard]The International Code of Botanical Nomenclature primarily governs naming of which group?...
[Hard]A bacterial culture in log phase doubles every 30 minutes. Starting with 5 x 10^3 cells, how many cells will be present after 2 hours assuming ideal c...
[Medium]Which adaptation enables many archaea to survive extreme high-temperature environments?...
[Hard]If a region shows a species-area relationship of S = 5A^0.25 (where S = number of species, A = area in km²), how many species are predicted in a 256 k...
[Easy]Which taxonomic aid is most suitable for identifying an unknown plant specimen using a sequence of contrasting characters?...
[Medium]A biodiversity hotspot has 1,800 plant species, of which 1,260 are endemic. What is the endemism percentage?...
[Medium]Systematics differs from simple classification primarily because it integrates which additional component?...
[Medium]Which feature most strongly differentiates Fungi from Plantae in Whittaker's five kingdom classification?...
[Easy]In the binomial name Panthera leo, what does the term 'leo' represent?...
[Easy]Which taxonomic rank directly lies below 'Class' in the hierarchical classification system?...