what is the relationship between a mistletoe and a spruce tree? | Yahoo Answers
Mistletoe derives its food for survival from trees like the spruce. It serves as a parasitic plant as it cannot survive without taking resources from another. Good Buddies: Symbiotic Relationships. Answer Key for Class Activity. Mistletoe/ Spruce Tree. Mistletoe extracts water and nutrients from the. Mistletoe is a common plant throughout North Carolina that can be found growing on the branches of deciduous trees. This same mistletoe is.
Yucca flowers are pollinated by yucca moths. The moths lay their eggs in the flowers where the larvae hatch and eat some of the developing seeds.
Mistletoe And Spruce Relationship
The relationship neither harms nor benefits the shark. Oxpeckers feed on the ticks found on a rhinoceros. The oxpeckers get a meal and the rhinoceros is helped by the removal of the ticks. The spruce tree is harmed. The stork uses it saw-like bill to cut up the dead animals it eats.
As a result, the dead animal carcass is accessible to some bees for food and egg laying. The relationship neither harms nor benefits the stork.
Hermit crabs live in shells made and then abandoned by snails. This relationship neither helps nor harms the snails. They both watch for predators and alert each other to danger.
Because their visual abilities are different, they can identify threats that the other animal would not see as readily. Honey guide birds alert and direct badgers to bee hives. The badgers then expose the hives and feed on the honey first.
Mistletoe - Wikipedia
Next the honey guide birds eat. Host branches and stems are often swollen at the site of dwarf mistletoe infections.What is the relationship between army ants and silverfish
The size and extent of brooms varies among dwarf mistletoes and their host. Dwarf mistletoes have separate male and female plants. Seeds are produced annually on female plants. These are explosively released typically 1 to 12 metersand stick to host material. Upon germination, dwarf mistletoes produce an endophytic system, a specialized rootlike structure that is in contact with the phloem and xylem of host trees, from which the parasite obtains nutrients and water.
Aerial shoots appear 3 to 5 or more years after infection; the period before shoots are visible is known as the latent period. Spread of dwarf mistletoe occurs both from tree to tree and within the crowns of individual trees.
Infections tend to build up initially in the lower half of a crown and gradually spread upward. Lateral spread of dwarf mistletoe through single-storied stands averages about 0. Spread is relatively rapid from infected overstory trees to nearby regeneration. As parasites, dwarf mistletoes cause significant changes in physiological processes and structural characteristics of infected trees, resulting in changes in the structure and function of forest communities.
Tree growth and vigor usually decline when more than half the crown is parasitized.
Most infected trees can survive for several decades; generally smaller trees decline and die more quickly than larger ones.
Tree mortality in areas with extensive infection is often three to four times higher than in uninfested areas. Bark beetles frequently attack heavily infected trees, especially during drought.