Multicellular organisms are composed of more than one cell working together. In the list provided:
1. Fruit fly: Fruit flies are multicellular organisms because they are made up of multiple cells that have specialized functions working together to form the organism.
2. Humans: Humans are multicellular organisms since our bodies consist of trillions of cells organized into tissues, organs, and systems that work in harmony to maintain life functions.
3. Trees: Trees are also multicellular organisms. They have complex structures with different types of cells like the phloem, xylem, and leaves that enable them to grow, reproduce, and carry out essential functions.
Bacteria, viruses, and apples are not multicellular organisms:
- Bacteria are unicellular organisms, meaning they are made up of a single cell.
- Viruses are not considered living organisms as they lack the cellular structure found in living organisms.
- An apple, being a fruit, is made of multiple cells but is not an organism itself; it is part of a plant's reproductive structure.
So, the multicellular organisms from the list are the fruit fly, humans, and trees.
