Difference between the natural system of plant classification and artificial system of classification is

The correct option is "Considers all the similarities between plants".

To understand why this is the correct choice, let us compare the two major systems of plant classification:
1. Artificial System of Classification: This system is based on only one or a few superficial vegetative or sexual characteristics (such as habit, color, number, and shape of leaves). For example, Linnaeus's artificial system classified plants based mainly on stamen characteristics (floral characters). Because it relies on very few arbitrary features, it does not show the true relationship between plants.
2. Natural System of Classification: Unlike the artificial system, the natural system of classification considers all the natural similarities and affinities between plants. It looks at a wide range of characteristics including vegetative structure, floral anatomy, embryology, phytochemistry, and internal features to group plants that are naturally related to each other.

Therefore, the key difference is that the natural system of plant classification considers all the similarities between plants to reflect their natural relationships, whereas the artificial system is based on limited vegetative or floral traits.