Question

Correct combination of flightless birds is
(a)Ostrich, Rhae, Kiwi
(b)Dodo, Emu, Corvus
(c)Penguin, Great horned owl, Ostrich
(d)Neophron, Kingfisher, Emu

Answer 1

Hint: Flightless birds are considered birds that have adapted to terrestrial behaviors. Because of seeking food on land, or any explanation of why the birds lost their flight habit with their bodies being heavier like the penguins, this is an evolutionary transition.

Complete answer:
-Flightless birds are birds that have lost the ability to fly through evolution. There are over 60 current species, including well-known penguins and ratites (ostriches, emu, cassowaries, rheas, and kiwi). The Inaccessible Island rail is the smallest flightless bird.
-The word "ratite" refers to their flat sternum, which, since it lacks the keel, is different from the traditional sternum of flying birds.
-The ostrich is the highest (both the heaviest and tallest) flightless bird, which is also the largest living bird.

Additional Information: -Many domesticated birds have lost the ability to fly for prolonged periods, such as domestic chicken and domestic duck, while their ancestral species, the red junglefowl, and mallard, respectively, are capable of prolonged flight.
-The smaller wing bones of flightless birds and the missing (or significantly reduced) keel on their breastbone are two main distinctions between flying and flightless birds. The muscles of the keel anchors that are necessary for wing movement.
-In the skeletomuscular system, adapting to a cursorial lifestyle causes two inverse morphological changes to occur: the pectoral apparatus used for power flight is paedorphically diminished, whereas peramorphosis contributes to the pelvic girdle becoming expanded for running.
So, the correct answer is ‘Ostrich, Rhae, Kiwi’.

Note: -A repeated selection of cursorial characteristics through ratites means that these adaptations require a more successful use of energy in adulthood.
-Ostriches are used to produce leather, are farmed for their decorative feathers, meat, and hides.