Gymnospem external features || morphological characters || reproduction || fertilisation || life cycle

External fertilisation

angiosperm external characters || flower structure || fertilisation || life cycle || economic importance || classification || affinity of angiosperms || affinities of angiosperms and gymnosperms

Classification based on a few morphological characters is

Two organisms with different correlated morphological characters belong to

pteridophytes external characters || economic importance || classification || life cycle and reproduction || homosporous anfd heterosporous pteridophytes || affinites OF pteridophytes

External fertilisation is absent in

Algae features || life cycle || reproduction || flagellation || photosynthetic pigments || basis of classification || chlorophyceae characters || economic importances