A feature shared by all animals:
Correct answer: D. Heterotrophy
- A. Motile
- B. Aquatic lifestyle
- C. Locomotion by limbs
- D. Heterotrophy
Explanation
All animals are heterotrophs, which means they rely on consuming other organisms for nutrition. This is a fundamental trait that distinguishes them from autotrophs, like plants, which can produce their own food through photosynthesis. The other options are not universal among animals: some animals, such as sponges, are sessile and not motile; animals inhabit both aquatic and terrestrial environments, so an aquatic lifestyle is not a shared trait; and not all animals have limbs, as many invertebrates move in other ways.
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About Kingdom Animalia
Animals are multicellular, heterotrophic eukaryotes whose cells lack cell walls and chloroplasts, with specialised tissues in most groups. Coverage includes body symmetry, tissue layers, coelom, segmentation and levels of organisation, plus major phyla such as Porifera, Cnidaria, Platyhelminthes, Annelida, Arthropoda, Mollusca and Chordata.
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