Green algae, ferns, and pine trees are classified in the kingdom Plantae. These organisms share certain characteristics. Which of the following is a characteristic used to classify these organisms as plants?

Question

A.
They produce flowers for pollination.

B.
They contain seeds for reproduction.

C.
They have an immune system.

D.
They engage in photosynthesis.

Answer 1

The correct answer is:

D. They engage in photosynthesis.

Photosynthesis is a key characteristic that defines plants. All plants, including green algae, ferns, and pine trees, are capable of photosynthesis, which allows them to convert light energy into chemical energy. The other options listed (A and B) are not applicable to all plants, and C is not relevant to the classification of plants.