Which of the following organisms is composed of cells with walls?

Rationale

Oak Tree is composed of cells with walls.

Plant cells, unlike animal cells, have a rigid cell wall surrounding the cell membrane. The cell wall provides structure and support to the plant cell, making it a defining characteristic of plant cells, which includes those of the Oak Tree.

A (Domestic Cat) YOUR ANSWER

Domestic cats are animals, and animal cells do not have cell walls. Instead, they have a semi-permeable cell membrane that allows the entry and exit of certain substances. The cell membrane provides flexibility to the animal cells, allowing them to change shape as needed.

B (Protozoa) YOUR ANSWER

Protozoa are a diverse group of unicellular organisms. Despite their diversity, most protozoa do not have cell walls. Instead, like animal cells, they are bound by a plasma membrane. Some protozoa have additional structures for protection or support, but these are not equivalent to the cell wall found in plant cells.

C (Human) YOUR ANSWER

Humans, like all animals, are composed of cells that lack cell walls. Instead, human cells have a cell membrane that controls the movement of substances in and out of the cell. The absence of a cell wall allows human cells to be flexible and adapt to different shapes for various functions.

D (Oak Tree) CORRECT

Oak trees, like all plants, are composed of cells that have cell walls. These walls are made up of cellulose, hemicellulose, and pectin. The cell wall provides structural support to the plant cell and helps maintain its shape. It also regulates growth and prevents the cell from bursting under high water pressure.

Conclusion

Among the options given, only Oak Tree is composed of cells with walls. Both animal cells (as in Domestic Cat and Human) and most protozoa lack a cell wall, instead possessing a plasma membrane. The cell walls found in the cells of Oak Trees, provide structure and support, distinguishing plant cells from animal cells and most protozoa.

Which of the following organisms is composed of cells with walls?

Oak Tree is composed of cells with walls.

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