- Do pinecones have seeds?
- Which fruit is dispersed by animals?
- What structure does a pine seed have that aid in dispersal?
- Which seed is dispersed by wind?
- What are the 3 parts of a seed?
- What seeds are carried by birds?
- Which plants seeds are dispersed by explosion?
- Is Cypress a type of pine?
- Why are dandelion seeds dispersed by wind?
- How is Violet dispersed?
- Is Cotton dispersed by wind?
- What are the seeds dispersed by water?
- How are seeds dispersed in nature?
- How are seeds dispersed by animals?
- What are the conditions required for a seed to germinate?
- Why do pea pods explode?
- What are the advantages of seed dispersal?
Do pinecones have seeds?
The main function of a pine cone is to keep a pine tree’s seeds safe.
Pine cones close their scales to protect the seeds from cold temperatures, wind and even animals that might try to eat them.
Pine cones open up and release their seeds when it is warm and it is easier for the seed to germinate..
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 structure does a pine seed have that aid in dispersal?
Pine trees have evolved special structures, the pine cone, as a central means of reproduction. The pine cone is key to successful fertilization of seeds and assists plays an important role in dispersing seeds over a wide area.
Which seed is dispersed by wind?
Other seeds are dispersed by the wind—such as the “winged” seeds from a maple tree that spin and “helicopter” through the air as they fall or the light feathery seeds from a dandelion that can catch on the breeze.
What are the 3 parts of a seed?
The three primary parts of a seed are the embryo, endosperm, and seed coat. The embryo is the young multicellular organism before it emerges from the seed. The endosperm is a source of stored food, consisting primarily of starches.
What seeds are carried by birds?
Birds may disperse seeds, such as those of mistletoe, by carrying them on their beaks after feeding. Mistletoe attaches to other plants; it’s not rooted in soil.
Which plants seeds are dispersed by explosion?
Violets, poisonous squirting cucumbers, and touch-me-nots or Impatiens capensis (not to be confused with these touch-me-nots) have an effective way of dispersing their seeds: They burst! The forceful ejection sends the seeds flying as far away as possible from the original plant.
Is Cypress a type of pine?
Cypress is a group of trees and shrubs making the genus Cupressus under the family Cupressaceae. … On the other hand, pine is another tree of the genus Pinus under the family Pinaceae. Also, it contains leaves which are long and needle-like. Both cypress and pine are coniferous, evergreen trees.
Why are dandelion seeds dispersed by wind?
Dispersal Mechanisms: Seeds can be dispersed long distances by wind because they move in updrafts. Longevity: Dandelion seeds are not long lived in the soil. Dormancy: The seed of dandelion are not dormant and can germinate immediately in the same year that they mature of the plant.
How is Violet dispersed?
Many violet species exhibit two modes of seed dispersal. … Often, seeds are then further dispersed by ants through a process called myrmecochory. Violets whose seeds are dispersed this way have specialized structures on the exterior of the seeds called elaiosomes.
Is Cotton dispersed by wind?
The cotton seeds are light weighted and these are covered by thin and light fibers of cotton. Explanation: The dispersal is the process through which the seeds from the plants are spread and carried away through the wind, water and various agents to the distance.
What are the seeds dispersed by water?
Seeds dispersed by water are contained in light and buoyant fruit, giving them the ability to float. Coconuts are well known for their ability to float on water to reach land where they can germinate. Similarly, willow and silver birches produce lightweight fruit that can float on water.
How are seeds dispersed in nature?
Seeds can be dispersed away from the parent plant individually or collectively, as well as dispersed in both space and time. … There are five main modes of seed dispersal: gravity, wind, ballistic, water, and by animals. Some plants are serotinous and only disperse their seeds in response to an environmental stimulus.
How are seeds dispersed by animals?
Animals can disperse seeds by excreting or burying them; other fruits have structures, such as hooks, that attach themselves to animals’ fur. Humans also play a role as dispersers by moving fruit to new places and discarding the inedible portions containing the seeds.
What are the conditions required for a seed to germinate?
Optimizing Germination We know that seeds need optimal amounts of water, oxygen, temperature, and light to germinate.
Why do pea pods explode?
As a pod dries, tensions are set up in the wall of the pod eventually causing it to split along two lines of weakness. As the two halves curl back, suddenly released like a tense spring, they flick out the seeds inside in an explosive manner.
What are the advantages of seed dispersal?
Abstract. Seed dispersal can be advantageous (1) in escape from density-or distance-dependent seed and seedling mortality, (2) by colonization of suitable sites unpredictable in space and time, and (3) by directed dispersal to particular sites with a relatively high probability of survival.