BIO-1802 Lecture Notes - Lecture 7: Green Algae, Red Algae, Symbiogenesis
Document Summary
Food particles taken into cells by phagotrophy. Supergroup of plants and relatives includes land plants and several algal phyla kingdom. Plantae (land plants) evolved from green algal ancestors phylum chlorophyta green algae . Phylum rhodophyta red algae phylum haptophyta phylum cryptophyta. Ex: cryptomonads, haptophytes (look @ slides for deets) Secondary plastids found in ^, from secondary endosymbiosis, more than 2 envelopes. Seperate from reproduction (which is usually binary fission) 2 flagella make them spin thru water. Resp. for red tides which is toxic to humans. Plastids from 2nd endosymb. w/ red algae. Thin, hairlike extensions of cytoplasm - filose pseudopodia. Phylum chlorarachniophyta phylum radiolaria phylum foraminifera. Includes animals and fungal kingdoms & related to protists. Most related to common ancestor of animals. Osmogtrophy- rely on uptake on small org. Mixotrophy- able to use all depending on cond, Produce cysts w/ thick walls, remain dormant. Generally adaptive bc it produces diverse genotypes. Diatoms- one of few protists w this life cycle.
