Which process will result in a gain of energy in an ecosystem?

Photosynthesis in algae cells

Ecosystems were able to maintain themselves by cycling the nutrients and energy obtained from external sources. The flow of energy through a food chain is known as energy flow. At tropical level, solar energy is used by the primary producers  to produce organic plants materials through photosynthesis. 

starchy vegetables are high in carbohydrates.

starchy vegetables contain more carbohydrates than non-starchy vegetables.

explanation:

there are two primary categories of carbohydrates, essentially differentiated on the basis of their carbohydrate content (which is in the form of starch - a complex carbohydrate):

those vegetables which contain little amounts of starch are termed as non-starchy vegetables, and some examples include: artichokes, broccoli and bean sprouts.

vegetables high in their starch content are distinguished as starchy vegetables, and some examples include: potatoes, chickpeas and corn.