Thursday 30 April 2020
How are seeds and fruits of plants adapted to their mode of dispersal?
Water; Fruit mesocarp/seed testa has air spaces;
thus light/buoyant to float; carried away by water; fruits/seeds protected from
soaking by waterproof pericarp/testa; Animal; have hooks for attachment to
animals; thus carried to other places; fruits are brightly coloured;
succulent/fleshy; aromatic/scented; to attract animals; which feed on them; the
seed coats/hard seeds are resistant to digestive enzymes; thus are unaffected; seeds
dropped away from parent in faeces/droppings; Wind; have hairs/wing-like
structures/floss/extensions; which increase surface area/for buoyancy; making
it easy to be blown away; fruits/seeds are light due to small size; therefore
easily carried away by wind; censor mechanism; perforated/open/split/capsule;
usually loosely attached to the stalk/long stalk; is swayed by wind; scattering
seeds; Selfdispersal/Explosive mechanism; tension/pressure is created inside a
dry pod; pod opens (violently) along lines of weaknesses; the two halves curl
outwards; scattering the seeds;
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