Question

there was a green plant with flat stem,but no leaves.the entire plant was covered by soft spines​

Answer 1

The cactus is the plant with flat stem, but no leaves. The entire plant was covered by soft spines.

Explanation:

They are basically desert growing plants. They are nutrient-rich. They grow better in dry arid conditions.

They are found with special habitat, they absorb the water content in the rainy season which helps them to use in dry arid condition.

They use the transpiration process to make the water vapor move to the atmosphere via stomata.

Answer 2

From the properties given or mentioned in the question, it is clear that the plant is Cactus.

OTHER POINTS :

1. Cactaceae is the family to which this plant called catus belongs or falls.

2. This plant has the pigment called chlorophyll which helps them to perform the photosynthesis process.

3. These plants are found in desert like or in dry environment.