Explain
adaptive radiation and how the different paper forms made by the “finches”
helped or hurt that particular “finch species”
When Charles Darwin was in the Galapagos Islands, one of the first things he noticed is the
variety of finches that existed on each of the islands. All in all, there were
many different species of finch which differed in beak shape and overall size.
This is adaptive radiation and natural selection at work. This is where
species all deriving from a common ancestor have over time successfully adapted
to their environment via natural selection.
Random House Webster’s
College Dictionary, 2014 Sparknotes.LLC. [Internet]. [Cited March 8, 2014 ]
Available from: http://www.biology-online.org/2/15_adaptive_radiation.htm
Explain
how behavioral adaptations my lead to genetic changes in a population
All organisms have adaptations that help them survive and thrive. Some
adaptations are structural. Structural adaptations are physical features of an organism
like the bill on a bird or the fur on a bear. Other adaptations are behavioral. Behavioral adaptations are the things organisms
do to survive. For example, bird calls and migration are behavioral adaptations. Adaptations
usually occur because a gene mutates or changes
by accident! Some mutations can help an animal or plant survive better than
others in the species without the mutation. For example, imagine a bird species. One day a bird is born
with a beak that is longer than the beak of other birds in the species. The
longer beak helps the bird catch more food. Because the bird can catch more
food, it is healthier than the other birds, lives longer and breeds more.
2014 New Hapshire
Public Televicion, Duham, NH 03824. [Internet][3/08/2014]. Available
from: http://www.nhptv.org/natureworks/nwep1.htm
A species that has a behavioral
adaptation that may allow its predator not to be able to eat it or find it.
Explain what this
BEHAVIORAL adaptation is.
This
trait is an ADAPTATION that helps the Giraffe survives because the giraffe can
eat very high food that others cannot, so this is an advantage for this species
to keep surviving.
A
species that has a physical adaptation that allows it to survive in cold
weather.
penguin parents raise
their chicks in just one season to survive on their own in the sea before the
ice starts to melt. March along with these penguins as they protect their eggs
in the harshest climate on Earth. This species can support very cold
temperatures and they been adapted to that.
A
species that has a physical adaptation that allows it to survive from its
predators.
Most cacti
live in habitats subject to at least some drought. Many live in extremely dry
environments, even being found in the Atacama Desert,
one of the driest places on earth. Cacti show many adaptations to conserve
water. Most species of cacti have lost true leaves, retaining only spines, which are highly modified leaves. Many scientists believe
that cacti developed their physiological traits in response to changing
climatic conditions several million years ago. The major traits that people see
when they first observe cacti is the abundance of spines on many species.
(Ivenrock
Gardens, 1997-2013 All rights reserved. Available
in : http://www.rivenrock.com/adaption.htm)
An
example of mutualism in nature. Explain what mutualism is this case.
mutualism, association between organisms of two
different species in which each is benefited. Mutualistic arrangements are most
likely to develop between organisms with widely differing living requirements.
The partnership between nitrogen-fixing bacteria and leguminous plants is an
example, as is the association between cows
and rumen bacteria
(the bacteria live in the digestive tract and help digest the plants eaten by
the cow). The associations between tree roots and certain fungi are often
mutualistic (see mycorrhiza.)
Ecology.
Edited by Connexions BiologyNM on Mar 25, 2013. [Internet blog][3/09/2014].
Available from: http://cnx.org/content/m45555/latest/?collection=col11612/latest
An
example of commensalism in nature. Explain how your picture represents
commensalism.
commensalism, in biology, a relation between individuals
of two species in which one species obtains food or other benefits from the other
without either harming or benefiting the latter. (This kind of relation can be
contrasted with mutualism, in which both
species benefit.) The commensal (the species that benefits from the
association) may obtain nutrients, shelter, support, or locomotion from the host species, which is substantially unaffected. The commensal relation is
often between a larger host and a smaller commensal; the host organism is
unmodified, whereas the commensal species may show great structural adaptation
consonant with its habits, as in the remoras that ride attached to sharks and other fishes.
Encyclopedia
Britanica, 2014. Mar 25, 2013. [Internet blog][3/09/2014]. Available from: http://www.britannica.com/EBchecked/topic/127789/commensalism)
An
example of mimicry in nature. Explain what the mimicry is in this case.
When one animal copies the appearance, actions, or sounds of
another animal, the first animal is called a MIMIC. You can think of
it as a copycat. Usually, an animal will MIMIC another to avoid
predators. If it can trick
its enemy into thinking it is something less tasty or more dangerous, it will survive.
Two of these are Bumblebees(with stingers) and two are Robber Flies (which also
make a sound similar to a bee).
One
species from your country (plant animal insect etc) that has an adaptation that
lets it survive in your country. Explain.
Common
kingsnakes live throughout much of North America. Over the millennia, the
wide-ranging species has evolved into seven subspecies. Clad in jet-black
scales, Mexican black kingsnakes (Lampropeltis getula nigrita) prowl the
low-elevation deserts of southern Arizona and northwest Mexico, perfectly
adapted to their desert habitat. Like other subspecies, Mexican black
kingsnakes are immune to the venom of native pit vipers. Despite this,
kingsnakes do not specifically seek out venomous snakes; instead, they consume
them opportunistically.
Ben team. 2014, adaptations of the mexican black king snake. Sired in
03/10/2014, available in: http://animals.pawnation.com/adaptations-mexican-black-king-snake-8728.html).
Graph of survivor Trey
