Question

How many eukaryotic domains are there?

Answer 1

Eukaryotes:

Eukaryotes are unicellular or multicellular organisms whose cell contains a distinct, membrane-bound nucleus and organelles.

Eukaryotic domains:

Whittaker classified the Eukaryotic domain into 4 kingdoms – Animalia, Plantae, Protista and Fungi.

1. Animalia
   1. Multicellular organisms
   2. The cells are organized into tissues and lack cell walls.
   3. They are heterotrophic, i.e., do not carry out photosynthesis and obtain nutrients primarily by ingestion.
   4. Examples are insects and vertebrates.
2. Plantae
   1. Multicellular organisms
   2. The cells are organized into tissues and have cell walls made up of cellulose.
   3. They are autotrophic
   4. Examples include mosses, conifers, and flowering plants.
3. Protista
   1. Unicellular eukaryotic organisms
   2. Most of them live in water while some inhabit moist places.
   3. They have pseudopodia, cilia, or flagella for movement.
   4. Slime molds, algae, and protozoans are examples.
4. Fungi
   1. Can be Unicellular or multicellular.
   2. Have cell walls made of chitin but cells are not organized into tissues
   3. They are not autotrophic and obtain nutrients through absorption.
   4. Yeasts and molds are some examples