How is blackjack seed suited to its method of dispersal

By Mark Zuckerberg

Seeds on the Move - Seed Dispersal for Kids - Kids Discover

ADAPTATIONS OF SEEDS FOR WIND DISPERSAL- For non-aquatic, terrestrial plants, the wind is an obvious supplier of energy of movement, and many plant adaptations exist that clearly take advantage of this fact. This type of seed dispersal is not efficient, but very effective. Factsheet - Bidens pilosa (Blackjack) - Reproduction and dispersal. Bidens pilosa normally behaves as an annual weed but at least one form, B. pilosa var. radiata, may behave as a perennial. One isolated plant can produce over 30,000 seeds, which are generally highly viable. Seeds germinate on the soil surface or in shallow soil (to a depth of 1 cm). The dispersal of plant seeds - Free ZIMSEC Revision Notes ... Home / Notes / Ordinary Level Notes / O Level Science Notes / The dispersal of plant seeds. Previous Next. The dispersal of plant seeds. Guava fruits are juicy and the seeds are can resist digestion. ... 2 Animal dispersal. These plants have fruits that are juicy and eaten by animals, the seeds are usually protected by hard outer layers which ... How is the blackjack seed suited to its dispersion?

How is the blackjack seed suited to its dispersion? ... Seed Dispersal-the method by which a plant scatters its offspring away from the parent plant to reduce competition.Methods include:wind ...

Bidens pilosa - Wikipedia Bidens pilosa is a species of flowering plant in the aster family. It is native to the Americas but it is known widely as an introduced species of other regions, including Eurasia, Africa, Australia, and the Pacific Islands. [citation needed] It is a tall branched weed with thin yellow flowers that develop into a cluster of barbed fruits.

Fruit and Seed Dispersal. Animals and birds eat fruits, and the seeds that are not digested are excreted in their droppings some distance away. Some animals, like squirrels, bury seed-containing fruits for later use; if the squirrel does not find its stash of fruit, and if conditions are favorable, the seeds germinate.

The dispersal of plant seeds - Free ZIMSEC Revision Notes ...

The typical ‘blackjacks’ that attach themselves to passing animals and people radiate outwards as 1cm-long seeds crowned by two or three sharp awns. After fruiting, the plant dries out completely – even the roots become brittle. This is a mechanism to promote ‘zoochory’ – the dispersal of seeds through animal or human movement.

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