Thallophyta These are the plants with no body differentiation They do have a specific root, stem, leaves so they do not have specific differentiation They prefer aquatic habitats examples :-green algae In thallophyta they have a hidden reproductive system -cryptogamae Algae They are autotrophic Habitat :- Mostly aquatic (freshwater/ marine ) , found in most soil/ wood Structure :- It can be unicellular,colonial, filamanteous Examples :-volvox ( colonial ), Chlamydomonas (unicellular ), Ulothrix (filamenteous ), Spirogyra ( filamenteous ), Ulva, Cladophora (branched filaments) it is also known as river weed Algae reproduction Asexual reproduction :- Fragmentation Parent organism will break into new pieces or multiple pieces on maturity, each of which give rise to a new individual. Example :- spirogyra when it becomes matures it breaks into new pieces and each of these pieces are able to give rise to a ne...
P LA NT KINGDOM Plantae : characterstics Eukaryotes :-specific membrane bound cell organelle & distinct nucleus Multicellular :- they are made up of multiple cells Autotrophic :- prepare their own food Immobile They can be aquatic or land plants Their cell walls are present Classification system Artificial Natural Phylogenetic Artificial classification system External morphological characters Advantages :-closely related species could be classified Limitations :- Equal weightage to vegetative and sexual characterstics Natural classification system External as well as internal characters are the basis of classification Advantages :-overshadows limitations of artificial system Establishes relationship between organism Limitations :-closely related organism can differ in important p...
Dianoflagellates They are protists with two flagella that's why they are called dianoflagellates They are neither plant nor animal-like protist They contain chlorophyll/ carotene/ several groups of Xanthophylls complex cell covering, cortex is present Light sensitive organelle, eye spot is found in some of them Erythropsidium :-smallest known eye Habitat :-aquatic (can be fresh water / marine ) Nutrition - photosynthetic, ingestion of prey through Oodinium, Notiluca Reproduction :-fission (asexual ) Sexual mode is seen only in some of them Red tide They are also known as algal bloom The coloration of the sea into red is due to rapid multiplication of the red dianoflagellates, gonyaulux, is termed red tide Chemicals released during this processs is extremely harmful for the survival of other aquatic life Euglenoids They share characteristics of both plants and animals They have a shape cha...
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