Invertabrates classification 0.0 / 5 ? BiologyVariety of life and classificationIGCSEEdexcel Created by: Katie_Cox98Created on: 31-05-14 12:48 Monocotyledons - One seed. - Root xylem and phloem in a ring. - vascular bundles scattered. - leaf veins in parallel pattern -flower leaves and petals in groups of 3 or multiples of 3 1 of 9 Dicotyledons -Two seeds -Phloem in between arms of xylem -Vascular bundles in distinct ring. -Veins in leaf form net pattern -flower parts in fours or fives and their multiples. 2 of 9 Insects - Fly or ant - 3 body parts: head, thorax, abdomen - 3 pairs of legs -usually 1 or 2 pairs of wings 3 of 9 Crustations - Crab - Many segments, usually each with claws, feelers or legs. - Breathe via gills, as live in water. - Exoskeleton hard for protection. 4 of 9 Arachnids - Spider - Two body parts, eight legs and no wings. - Piecing jaws as all are predetors 5 of 9 Myriapods - Millipedes and centipedes - Long thin body with many segments to move easily through soil. - Antennae as sense organs for dark habitats. 6 of 9 Annelids (true worms) - Worms - Many segments on long body. - Body covered in mucus. - Hermaphradites -Bristles for movement 7 of 9 Nematodes - Round worms - Long, unsegmented, cylindrical body. 8 of 9 Molluscs - Snail - Soft body with a muscular foor for movement. - Often have eyes on retractable tentacles - Soft body in a calcium carbonate shell 9 of 9
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