Earthworm is included in_____________?
Correct answer: D. Kingdom Animalia
- A. Kingdom Plantae
- B. Kingdom Protoctista
- C. Kingdom Monera
- D. Kingdom Animalia
Explanation
An earthworm is a multicellular, heterotrophic animal belonging to the phylum Annelida, so it is placed in Kingdom Animalia. It cannot make its own food and has specialized animal tissues and organs, unlike plants. Students may choose Plantae because earthworms live in soil, but habitat does not determine kingdom.
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About Classification of Biological Molecules
Biological molecules are classified as carbohydrates, lipids, proteins and nucleic acids, with water, minerals and vitamins also supporting cellular processes. The key distinctions involve their monomers, chemical bonds, structures and functions, including glucose and starch, fatty acids and triglycerides, amino acids and polypeptides, and nucleotides in DNA and RNA.
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