! Chlorophyll content indicates that photosynthetic autotrophy can be carried out. Heterotrophs: In the process of assimilation, organisms can't directly use inorganic substances to make organic matter, but can only convert the organic matter absorbed from the outside into their own components and store energy. This metabolic type is heterotrophic; So we can rule out 2 (heterotrophic).

! From the former, we can know that it may be an animal without chloroplasts or an organism without organelles.

From the topic, there is no chloroplast but chlorophyll, which indicates whether there is an organelle formed in the cell, and mitochondria is the organelle formed, which is not the most possible, excluding 4; In eukaryotes, organelles tend to be shaped and the possibility is reduced.

! Prokaryotes such as cyanobacteria (organelles only have ribosomes, but they can carry out photosynthesis, and the cytoplasm matrix contains chlorophyll) are likely to meet the meaning of the topic. The most likely is a large scale. From this point, it is easy to think of prokaryotes, which have no nuclear membrane, and some pseudonuclei with specific functions (equivalent to the nucleus of eukaryotes) are scattered in cells;

Refutation: it won't be a green eye bug.

The green eye worm is a long spindle-shaped green single-celled animal. Its front end is slightly round, its back end is sharp, and its body surface is covered with elastic film with twill. The nucleus is large and spherical, which is located in the endoplasmic reticulum in the middle and back of the worm. The endoplasmic reticulum also contains a large number of chloroplasts and forms a specific star shape.