Differentiate between the following:-
(i) red algae and brown algae
(ii) liverworts and moss
(iii)homosporous and heterosporous pteridophyte
(iv)syngamy and triple fusion
Differentiate between the following:-
(i) red algae and brown algae
(ii) liverworts and moss
(iii)homosporous and heterosporous pteridophyte
(iv)syngamy and triple fusion
(i) Red algae and brown algae
Red algae Brown algae1.Red algae are grouped under the class1.Brown algae are grouped under theRhodophyceae.class phaeophyceae.2.They contain floridean starch as2.They contain mannitolstored food.or laminarin as stored food.3.They contain the photosynthetic3.They contain the photosyntheticpigments chlorophylls a and d, andpigments chlorophylls a and c, andphycoerythrin.fucoxanthin.4.Their cell walls are composed of4.Their cell walls are composed ofcellulose, pectin, andcellulose and algin.phycocolloids.5.Flagella are absent5.Two flagella are present
(ii) Liverworts and moss
Liverworts Moss1.They have unicellular rhizoids.1.They have multicellularrhizoids.2.Scales are present very often2.Scales are absent3.They are generally thalloid, with3.They are foliage, with lateraldichotomous branching.branching.4.Gemma cups are present4.Gemma cups are absent5.Sporophyte has very5.Sporophyte has abundantphotosynthetic tissue littlephotosynthetic tissue
(iii) Homosporous and heterosporous pteridophyte
Homosporous pteridophytesHeterosporous pteridophytes1.They ber spores that are of1.They bear two kinds of spores − the same type.microspores and megaspores.2.They produce bisexual2.They produce unisexualgametophytes.gametophytes.
(iv) Syngamy and triple fusion
SyngamTriple fusion1.It is the process of fusion of1.It is the process of fusion of the malethe male gamete with the egggamete with the diploid secondaryin an angiosperm.nucleus in an angiosperm.2.A diploid zygote is formed as a2.A triploid primary endosperm isresult of syngamy.formed as a result of triple fusion
(i) Red algae and brown algae
Red algae Brown algae1.Red algae are grouped under the class1.Brown algae are grouped under theRhodophyceae.class phaeophyceae.2.They contain floridean starch as2.They contain mannitolstored food.or laminarin as stored food.3.They contain the photosynthetic3.They contain the photosyntheticpigments chlorophylls a and d, andpigments chlorophylls a and c, andphycoerythrin.fucoxanthin.4.Their cell walls are composed of4.Their cell walls are composed ofcellulose, pectin, andcellulose and algin.phycocolloids.5.Flagella are absent5.Two flagella are present
(ii) Liverworts and moss
Liverworts Moss1.They have unicellular rhizoids.1.They have multicellularrhizoids.2.Scales are present very often2.Scales are absent3.They are generally thalloid, with3.They are foliage, with lateraldichotomous branching.branching.4.Gemma cups are present4.Gemma cups are absent5.Sporophyte has very5.Sporophyte has abundantphotosynthetic tissue littlephotosynthetic tissue
(iii) Homosporous and heterosporous pteridophyte
Homosporous pteridophytesHeterosporous pteridophytes1.They ber spores that are of1.They bear two kinds of spores − the same type.microspores and megaspores.2.They produce bisexual2.They produce unisexualgametophytes.gametophytes.
(iv) Syngamy and triple fusion
SyngamTriple fusion1.It is the process of fusion of1.It is the process of fusion of the malethe male gamete with the egggamete with the diploid secondaryin an angiosperm.nucleus in an angiosperm.2.A diploid zygote is formed as a2.A triploid primary endosperm isresult of syngamy.formed as a result of triple fusion
