Similarities and Difference between Bryophyte and Algae

Algae vs Bryophytes

Bryophytes are the most primitive land plants. They are immediate between aquatic and terrestrial life. Even though bryophytes are well adapted for the land life they require the presence of water for the completion of their life cycle. Most of the evolutionary biologists believe that bryophytes were originated from Algae. This belief is strongly supported by the similarities of many characters in algae and bryophytes. This post describes the similarities and difference between algae and bryophytes.

Learn more: Characteristis of Bryophytes

Similarities between Algae and Bryophytes

(1). In both groups the plant body is thalloid and undifferentiated.

(2). Plant body is not differentiated into root, stem and leaves in both groups.

(3). Gametophytic generation is the prominent phase in life cycle in both groups.

(4).  True roots are absent in both groups of algae and bryophytes.

Difference between Algae and Bryophytes

(5).  Both groups are autotrophic in nutrition.

(6). In both algae and bryophytes major photosynthetic pigments are chlorophyll a, b and carotenes.

(7). Vascular tissue is absent in both groups.

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(8). Cellulose is chief consistent of cell wall in both groups.

(9).  In both groups starch is the reserve food material.

(10).  Both groups possess pectin in their cell wall.

(11).  In Chlorophyceae (algae) and Anthocerotales (bryophytes) the plastids contains pyrenoids.

(12).  Both group can undergo vegetative reproduction by death and decay, fragmentation, and adventitious tubers.

(13).  Presence of motile flagellated antherozoids in both groups.

(14).  Flagella of antherozoids are whiplash type in both groups.

(15).  Water is essential for fertilization in both groups.

(16).  Filamentous protonema in the juvenile stage of bryophytes resembles the algal plant body.

(17).  Alternation of generation is present in both groups.

Difference between Algae and Bryophytes

Sl. No.AlgaeBryophytes
1Plants are mostly aquaticPlants are mostly terrestrial
2Plant body may be unicellular or multicellularPlant body always multicellular
3Plant body does not show any division of laborPlant body shows division of labour (internally differentiated into photosynthetic and storage zones)
4In each cell only one or few chloroplasts are presentIn each cells many chloroplasts are present
5Every cell in the plant body is capable of growth and reproductionOnly the apical cells are capable of growth and reproduction
6Pores or stomata are absentPores or stomata are present for gaseous exchange
7Rhizoids usually absent, if present simple typeRhizoids present, sometimes two types (smooth walled and tuberculated)
8Asexual reproduction is common by a variety of spores such as zoospores, aplanospores, hypnospores etc.Asexual reproduction is absent
9Sexual reproduction may be isogamous, anisogamous or oogamousSexual reproduction always oogamous type
10Sex organs are usually unicellularSex organs are always multicellular
11Sex organs not covered with sterile jacket cells for productionSex organs are always covered with sterile jacket cells for protection
12Female sex organ is oogoniaFemale sex organ is archegonia
13Zygote undergo a resting periodZygote do not have any resting period
14Zygote do not forms an embryoZygote develops into an embryo
15Sporophytic phase is highly reducedSporophytic phase is well developed
16Gametophytic and sporophytic generations are usually independentGametophytic and sporophytic generations are dependent and physically connected
17Alternation of generation usually isomorphic, rarely heteromorphicAlternation of generation always heteromorphic

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@. Bryophytes General Characteristics

@. Algae General Characteristics

@. Lichen General Characteristics

@. Life Cycle in Algae

@. Pigmentation in Algae