Table of Contents
What is Hydrochory seed dispersal?
Hydrochory is seed dispersal by water. Seeds can disperse by rain or ice or be submerged in water. Seeds dispersed by water need to have the ability to float and resist water damage. They often have hairs to assist with enlargement and floating.
What is Hydrochory?
Hydrochory, or the passive dispersal of organisms by water, is an important means of propagule transport, especially for plants. During recent years, knowledge about hydrochory and its ecological consequences has increased considerably and a substantial body of literature has been produced.
What fruit seeds are dispersed?
Fruits play an important role in the seed dispersal of many plant species. In dehiscent fruits, such as poppy capsules, the seeds are usually dispersed directly from the fruits, which may remain on the plant. In fleshy or indehiscent fruits, the seeds and fruit are commonly moved away from the parent plant together.
How do angiosperms disperse seeds?
Fruits and seeds are the primary means by which angiosperms are dispersed. The chief agents of dispersal are wind, water, and animals. Some fruits and seeds have modifications that aid in wind dispersal. Fruit modifications include samaras, samaroid schizocarps, and the feathery calyx lobes (e.g., dandelion).
What are examples of Zoochory?
Mango, apricot, and tomato are all examples for compensated zoochory.
What is pappus in plants?
In Asteraceae, the pappus is the modified calyx, the part of an individual floret, that surrounds the base of the corolla tube in flower. It functions as a wind-dispersal mechanism for the seeds.
What is a plant Propagule?
noun. a plant part, such as a bud, that becomes detached from the rest of the plant and grows into a new plant.
Which fruit is dispersed by animals?
Examples include mangoes, guavas, breadfruit, carob, and several fig species. In South Africa, a desert melon (Cucumis humifructus) participates in a symbiotic relationship with aardvarks—the animals eat the fruit for its water content and bury their own dung, which contains the seeds, near their burrows.
What are angiosperms seeds?
Angiosperm seeds develop from ovules within the ovary, and have three parts: a seed coat encloses an embryo together with a stored food supply known as endosperm. In angiosperms, fruits enclose seeds. Seeds consist of a seed coat, embryo, and endosperm food supply.
Where do angiosperms produce seeds?
ovaries
The seeds of angiosperms develop in the ovaries of flowers and are surrounded by a protective fruit. Gymnosperm seeds are usually formed in unisexual cones, known as strobili, and the plants lack fruits and flowers.
What is Zoochory in botany?
Zoochory is the dispersal of diaspores by animals. Animals can disperse plant seeds in several ways. Seeds can be transported on the outside of animals, a process known as epizoochory. Seed dispersal via ingestion by animals, or endozoochory, is the dispersal mechanism for most tree species.
What is Zoochory in biology?
Zoochory is referred to as the way of seed dispersal in plants mediated through animals i.e. animals are the carriers of seeds. It is a kind of survival mechanism that ensures continuity of the species of plants. Complete step by step answer:Zoochory is the dispersal of plant seeds in several ways by animals.
What is the difference between a propagule and a seed?
Seeds and spores are also propagules. An elongated, dart-shaped seedling of various mangrove species growing in swampy habitats. A propagule develops from a seed that germinates while still attached to the parent tree. The parent supplies the seedling with nutrients and water until it becomes heavy and drops off.
What is a propagule in ecology?
Propagule pressure (also termed introduction effort) is a composite measure of the number of individuals of a species released into a region to which they are not native.