Question:
I didn't understand that why Dinoflagellates are neither animal and nor plants while Euglinoids have both characters of animals and plants?
Answer:
Dinoflagellates are unicellular protists, they do not have any characteristics of either planst or animals who are genrally multicellular.
Euglena is an organism sharing both characteristics of plants and animals.
Plants Characteristics of Euglena:
It has chlorophyll for photosynthesis.
It uses holophytic mode of nutrition if light is present.
Possession of pyrenoid.
Carbohydrate or food is stored in form of starch granules.
Animal Characteristics of Euglena:
Possession of an eye part for light deflection.
Possession of pellicle.
Possession of a gullet and a food reservoire.
Possession of flagellum for movement.
Possession of myonemes for movement.
Possession of contractive vacuole for excretion and osmoregulation.
In the absence of light, nutrition is holozoic.
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