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:-
1.Red algae are grouped under the class Rhodophyceae.
2.They contain floridean starch as stored food.
3.They contain the photosynthetic pigments chlorophylls a and d, and phycoerythrin.
4.Their cell walls are composed of cellulose, pectin, and phycocolloids.
5.Flagella are absent
Brown algae:-
1. Brown algae are grouped under the class Phaeophyceae.
2. They contain mannitol or laminarin as stored food.
3. They contain the photosynthetic pigments chlorophylls a and c, and fucoxanthin.
4. Their cell walls are composed of cellulose and algin.
5. Two flagella are present

(ii) Liverworts and moss:-
Liverworts:-
1. They have unicellular rhizoids.
2. Scales are present very often
3. They are generally thalloid, with dichotomous branching.
4. Gemma cups are present
5. Sporophyte has very photosynthetic tissue little
Moss:-
1. They have multicellular rhizoids.
2. Scales are absent
3. They are foliage, with lateral branching.
4. Gemma cups are absent
5. Sporophyte has abundant photosynthetic tissue

(iii) Homosporous and heterosporous pteridophyte:-
Homosporous pteridophytes:-
1. They bear spores that are of the same type.
2. They produce bisexual gametophytes.
Heterosporous pteridophytes:-
1. They bear two kinds of spores – microspores and megaspores.
2. They produce unisexual gametophytes.

(iv) Syngamy and triple fusion:-
Syngamy:-
1. It is the process of fusion of the male gamete with the egg in an angiosperm.
2. A diploid zygote is formed as a result of syngamy.
Triple fusion:-
1. It is the process of fusion of the male gamete with the diploid secondary nucleus in an angiosperm.
2. A triploid primary endosperm is formed as a result of triple fusion.