HORTICULTURE

Detailed explanation-1: -Examples are bacteria and blue green algae. The cells, like onion cells and cheek cells having well-organised nucleus with a nuclear membrane are designated as eukaryotic cells. All organisms other than bacteria and blue green algae are called eukaryotes.

Detailed explanation-2: -They are members of monera. They are called blue-green algae because they are aquatic and photosynthetic. They are green due to presence of chloroplasts. They are Gram positive photosynthetic prokaryotes which perform oxygenic photosynthesis.