There are two major groups of seed plants, gymnosperms (Exercise 24) and angiosperms. Compare these two groups of seed plants with respect to the following features: Gymnosperms Angio sperms Feature a. type of reproductive structure b. source of nutrition for developing embryo c. enclosure of mature seed Solution Feature Gymnospersm Angiosperms Type of reproductive structure Cones Flowers Source of nutrition for developing embryo Female gametophyte tissue (X) Endosperm (3X) Enclosure of mature seed Seed integuments are present, but ovary is absent, so seeds exposed directly. Seed integument is present, All ovules are present in Ovary, later Ovary turns in to fruit. Feature Gymnospersm Angiosperms Type of reproductive structure Cones Flowers Source of nutrition for developing embryo Female gametophyte tissue (X) Endosperm (3X) Enclosure of mature seed Seed integuments are present, but ovary is absent, so seeds exposed directly. Seed integument is present, All ovules are present in Ovary, later Ovary turns in to fruit..

1. There are two major groups of seed plants, gymnosperms (Exercise 24) and angiosperms.
Compare these two groups of seed plants with respect to the following features: Gymnosperms
Angio sperms Feature a. type of reproductive structure b. source of nutrition for developing
embryo c. enclosure of mature seed
Solution
Feature
Gymnospersm
Angiosperms
Type of reproductive structure
Cones
Flowers
Source of nutrition for developing embryo
Female gametophyte tissue (X)
Endosperm (3X)
Enclosure of mature seed
Seed integuments are present, but ovary is absent, so seeds exposed directly.
Seed integument is present, All ovules are present in Ovary, later Ovary turns in to fruit.
Feature
Gymnospersm
Angiosperms
Type of reproductive structure
Cones
Flowers
Source of nutrition for developing embryo
Female gametophyte tissue (X)
Endosperm (3X)
Enclosure of mature seed
Seed integuments are present, but ovary is absent, so seeds exposed directly.
Seed integument is present, All ovules are present in Ovary, later Ovary turns in to fruit.