Natural Sciences Grade 7 Term 1: Life and Living Biodiversity (PPT 6)
Diversity of Plants: Dicotyledons and Monocotyledons (Part 2) Topic 2 Biodiversity Diversity of Plants: Dicotyledons and Monocotyledons (Part 2) Natural Sciences – Grade 7
Classification of Angiosperms Angiosperms are divided into two groups: Monocotyledons: plants with only 1 seed lobe Dicotyledons: plants with 2 seed lobes Mono = one; cotyl = seed lobe Di = two; cotyl = seed lobe Natural Sciences - Grade 7 3
Examples of Monocotyledons wheat maize sugar cane grass Natural Sciences - Grade 7 4
Characteristics of Monocotyledons Seed lobes = cyledons Monocotyledons have a adventitious or fibrous root system. Natural Sciences - Grade 7 5
Examples of Dicotyledons beans roses geraniums petunias Natural Sciences - Grade 7 6
Characteristics of Dicotyledons Dicotyledons have a taproot system Tap root = main root Lateral roots = smaller roots Natural Sciences - Grade 7 7
Natural Sciences - Grade 7 Let’s now compare… Dicotyledons have a taproot system Tap root = main root Lateral roots = smaller roots Natural Sciences - Grade 7 8
Summary: Diversity of Plants Plants with seeds Angio-sperms Dicotyledons Monocotyledons Gymno- sperms Plants without seeds Ferns Mosses Algae Natural Sciences - Grade 7 9