NEET BIOLOGY

Detailed explanation-1: -Euglena are unicellular organisms classified into the Kingdom Protista, and the Phylum Euglenophyta. All euglena have chloroplasts and can make their own food by photosynthesis.

Detailed explanation-2: -Algae. These protists are both single cells (algae, diatoms) as well as multicellular (seaweed or kelp). These protists are called plant-like due to the autotrophic nature of these organisms. These protists possess chloroplast and synthesize their own food by the process of photosynthesis.

Detailed explanation-3: -Euglenas are unusual in that they are both heterotrophic, meaning they must consume food, and autotrophic, meaning they can make their own food. These unicellular organisms usually live in calm ponds or even puddles.

Detailed explanation-4: -Protists can either be autotrophs or heterotrophs. The autotrophs such as plant-like protists (algae) possess a chloroplast. Most heterotrophs protists lack chloroplast; however, some like Plasmodium possess a nonfunctional chloroplast.

Detailed explanation-5: -Euglena has several chloroplasts surrounded by three membranes and with pyrenoids. These chloroplasts are of green algal origin.