A biologist discovers a vertebrate that has gills, fins, scales, and reproduces in water. To which vertebrate group does it belong?
Fish
The animal described is a fully aquatic vertebrate: it breathes with gills, swims with fins, has a body covered by scales and also breeds in water. This set of features is the defining combination of the class Pisces.
Fishes are cold-blooded aquatic vertebrates with a streamlined body, gills for extracting dissolved oxygen from water, paired and unpaired fins for swimming, scales on the skin, and most lay eggs that are fertilised in the water.
Amphibians have gills only in their larval stage and adults have moist, scaleless skin with limbs instead of fins. Reptiles have dry scaly skin but breathe through lungs and lay shelled eggs on land.
Mammals breathe through lungs, have hair or fur and mammary glands, and most give birth to young ones, so none of these groups shows gills, fins and scales together throughout life.
Hence, Fish.
Similar Questions
After assigning an organism to a Kingdom, which is the next taxonomic rank in the hierarchical classification system?
Which of the following is a reason, scientists classify living organisms?
Which of the following is the reason for having a scientific system of classifying living organisms?
If two organisms belong to the same genus but different species, it means:
Animals with a backbone are classified under the subphylum __________.
If a scientist writes the name of a species as Panthera leo in a printed article without using italics, which rule of scientific naming is violated?
The binomial system helps scientists when collaborating internationally on biodiversity research as:
A student observes two invertebrates–one has a muscular foot, while the other has a chitinous exoskeleton. To which phyla do these organisms belong?
The biological classification hierarchy is often compared to a house address system as:
Species is considered a more specific taxonomic category than a family as:
Important Questions from Zoology
Foot and mouth disease in cattle is caused by which micro organisms?
Contractile vacuole in protozoans mainly serves for
Which one is not a source of carbohydrate?
Worker honey-bee convey the direction of food source to other bees by
Mira and Divya are two small girls. Mira is fond of eating Samosa, Cutlet and Bread, whereas Divya likes food which are iron deficient. Mira and Divya can suffer which of the following diseases respectively?
