Differentiate between the following:
$(i)$ Red algae and brown algae
$(ii)$ Liverworts and moss
$(iii)$ Homosporous and heterosporous pteridophytes
$(iv)$ Syngamy and triple fusion

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(N/A) $(i)$ Red algae and brown algae
$(1)$ Red algae belong to class Rhodophyceae.$(1)$ Brown algae belong to class Phaeophyceae.
$(2)$ Stored food is floridean starch.$(2)$ Stored food is mannitol or laminarin.
$(3)$ Pigments are chlorophyll $a, d$ and phycoerythrin.$(3)$ Pigments are chlorophyll $a, c$ and fucoxanthin.
$(4)$ Cell wall contains cellulose,pectin,and phycocolloids.$(4)$ Cell wall contains cellulose and algin.
$(5)$ Flagella are absent.$(5)$ Two flagella are present.

$(ii)$ Liverworts and moss
$(1)$ Rhizoids are unicellular.$(1)$ Rhizoids are multicellular.
$(2)$ Scales are often present.$(2)$ Scales are absent.
$(3)$ Thalloid body with dichotomous branching.$(3)$ Foliage body with lateral branching.
$(4)$ Gemma cups are present.$(4)$ Gemma cups are absent.
$(5)$ Sporophyte has little photosynthetic tissue.$(5)$ Sporophyte has abundant photosynthetic tissue.

$(iii)$ Homosporous and heterosporous pteridophytes
$(1)$ Produce spores of the same type.$(1)$ Produce two types of spores: microspores and megaspores.
$(2)$ Produce bisexual gametophytes.$(2)$ Produce unisexual gametophytes.

$(iv)$ Syngamy and triple fusion
$(1)$ Fusion of male gamete with egg.$(1)$ Fusion of male gamete with secondary nucleus.
$(2)$ Forms a diploid zygote.$(2)$ Forms a triploid primary endosperm nucleus.

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