Question

Antarctica, because of her simple ecosystem and lack of biodiversity, is the perfect place to study how little changes in the environment can have big repercussions.           Take the microscopic phytoplankton — those grasses of the sea that nourish and sustain the entire Southern Ocean's food chain. These single-celled plants use the sun's energy to assimilate carbon and synthesise organic compounds in that wondrous and most important of processes called photosynthesis. Scientists warn that a further depletion in the ozone layer will affect the activities of phytoplankton, which in turn will affect the lives of all the marine animals and birds of the region, and the global carbon cycle. In the parable of the phytoplankton, there is a great metaphor for existence: take care of the small things and the big things will fall into place.

Photosynthesis is a process in which:

पर्याय

• Single-celled plants assimilate carbon in the presence of sunlight and synthesise organic compounds.

• Marine creatures assimilate their food with the help of sunlight.

• Sun gives its energy to provide necessary nourishment to the marine celled plants and animals.

• The energy is produced and sent to the single-celled plants as food.

Answer 1

Single-celled plants assimilate carbon in the presence of sunlight and synthesise organic compounds.

Explanation:

In the wonderful and crucial process of photosynthesis, these single-celled plants use the sun's energy to ingest carbon and synthesise organic chemicals.