Priyanti, Subject Matter Expert at Edumarz
Solution:
Red Algae (Rhodophyte) | Brown Algae (Phaeophyte) |
Their photosynthetic pigments include chlorophyll a, chlorophyll d and phycoerythrin. | Their photosynthetic pigments include chlorophyll a, chlorophyll c and fucoxanthin. |
Their food is stored as floridean starch. | They store food in the form of mannitol and laminarin. |
Their cell walls are composed of cellulose and sulphated phycocolloids. Thylakoids are unstacked. | They have non-sulphated phycocolloids and cellulosic cell walls. Thylakoids are stacked in groups of three. |
Eg. Porphyra, Rhodella | Eg. Kelps, Dictyotales |
Homosporous Pteridophytes | Heterosporous Pteridophytes |
They produce a single type of spore separated by sex. | They produce two different types of spores belonging to opposite sexes. |
They have bisexual gametophyte | They have unisexual gametophyte. |
Liverworts | Mosses |
They exhibit dichotomous branching. | They exhibit lateral and extra-axillary branching. |
They belong to the Marchantiophyta division and do not have the protonema stage. | They belong to the Bryophyta division and have a protonema stage. |
Syngamy | Triple Fusion |
It involves the fusion of male and female gametes during fertilization. | It involves the fusion of male gamete (sperm) with the two polar nuclei during double fertilization. |
It results in the production of diploid zygote which forms the embryo. | It results in the production of triploid endosperm. |