Protoctista Flashcards
What is symbiogenesis?
Definition: developing within another
What defines the Kingdom of Protoctista?
- Defined by exclusion
- Not animals, plants, fungi or monera
- Eukaryotic
- Include algae and single celled heterotrophs
Are protoctista eukaryotic or prokaryotic?
Eukaryotic
List all parts inside a protoctista
- Organelles
- Double membrane-bound nucleus
- Cytomembrane system
- Endoplasmic reticulum (rough & smooth)
- Ribosomes
- Lysosomes
- Golgi apparatus
- Mitochondria
- Cytoskeletal system
What type of membrane surrounds a protoctista nucleus?
-Double membrane
What does an autotroph do?
They contain chloroplasts and make their own food
How do heterotrophs feed?
By ingesting food from the surrounding water
List 5 protoctista ( protozoa) characteristics.
- Unicellular or colonial
- Mainly microscopic
- Come in all symmetries
- No organs or tissues
- Have organelles
Name three methods by which protostista can get around depending on the species
- Pseudopodia (false foot)
- Cilia
- Flagella
Describe the phylum Rhizopoda/Amoebozoa
- Irregular shape
- Plasmas membrane not organised into a pellicle
- Cell with endoplasm- granular central mass and a clear outer layer called ectoplasm
How do Amoebozoa move?
- Cytoplasmic streaming into its pseudopodia
- Body constantly changes shape
How do Amoebozoa primarily reproduce?
Asexually
-Via binary fission
How do Amoebozoa feed?
- They engulf their prey with their body
- Ingesting organisms, fragments or debris by cytoplasmic streaming around them
- Phagocytosis and pinocytosis
What is this?
An Amoeba
What is this?
It’s a Paramecium, phylum Ciliophora
What is happening in this slide?
Phagocytosis
