Tuesday, August 11, 2009

AndrewR 46 - 20

Andrew -- I have grouped these posts to reduce the number of separate entries for an individual student. You were supposed to put all your entries in ONE post, so you wouldn't have 50 separate posts. Please do NOT ungroup them.
-- Ms. Foglia
















46- Adaptation of a plant
Plants, like animals develop adaptive features to survive in their respective environments. This photograph is of an avocado plat fruit. This avocado has the adaption of forming an unappealing coarse exterior to shield the seed within. this adaptation was developed in order to protect the seed within by providing defense against predatory insects.















45 - ATP
ATP or Adenosine Triphosphate is a multifunctional nucleotide found in almost all living organisms as a means of cellular energy. This picture is of a leafy plant which undergoes the basic living function of cellular respiration, in this case photosynthesis. In order to make food in the form of glucose, the cells of this plant utilize energy stored in the sunlight and convert it into ATP in order to maintain cellular function.















44 - Phenotype
A phenotype is any observable characteristic of an organism that is determined by a set of alleles inherited from the parent organisms. This picture is of my sisters eye which has the phenotype of the color brown.
















43 - Asexual Reproduction
Asexual production is the means of producing offspring in simpler organisms without the physical involvement of sex. Organisms like protists, fungus, plants and bacteria reproduce asexually. This picture is of a flower's asexual reproductive organs. At the top is a curved green stem called the stamen containing the anther and filament which are the male sex organs of a plant.















42 - Connective Tissue
Connective tissue is one of four types or organic fibrous tissue from which biological structures are formed. Connective tissue serves the purpose of forming structures and support for other biological formations. Three examples of connective tissue are blood, bone and cartilage. This picture is of my left ear which is made up of cartilage, therefore an example of a connective tissue.















41- Rhizome
A Rhizome is a characteristic horizontal stem that usually lies underground beneath the flowering of a plant. Rhizomes have nodes where roots and shoots stem out upward. This picture is of a regular Ginger root used in cooking. Ginger roots run horizontal underneath the ground, and when used in cooking, exhibit a tangy sweet flavor.















40 - Eukaryote
This is my sister's guinea pig Ashes. Ashes is one of millions of Eukaryotic organisms. A Eukaryote is any organism whom is made up of complex cells with enclosed membranes and nuclei. Humans and many mostly all multicellular organisms are eukaryiotic , however, there are other organisms with simple cellular structures without nuclei. These organisms are prokaryotes.















39- Meristem
The meristem of a plant is a region of undifferentiated cells found in all plants in regions where growth can take place. Meristemic cells are undifferentiated cells which mean they do not have a sngle identity. They simple divide into the structure of the plant and frm the basic parts of the plant. Meristemic cells are the mirror of stem cells in humans, they can take any form and function to revive and progress the organism.















38 - Enzyme
Enzymes are proteins that facilitate chemical reactions. When fruits such as this apple are digested, the body uses an enzyme group called sucrase. Sucrase facilitates the hydrolysis of sucrose found in fruits to fructose and glucose which can be used by the body for a natural source of energy.















37- Endosperm
The endosperm is the protective layer of fibrous tissue surrounding the seeds exterior during fertilization. the endosperm nourishes the seed by producing starch and storing oils and proteins. The endosperm in my picture is the faded green layer over the budding seed.















36- Seed Dispersal (Wind)
With certain plants, seeds are distributed and repopulated by means of wind travel. This photograph is of a common seed swept up from the wind and dispersed into my backyard. This seed is built for wind travel with a lightweight frame and aerodynamic sides.















35 - Xylem
Xylem, like phloem, are organic tissues in plants and trees that transport nutrients throughout the organisms leaves and veins. However, xylem is more responsible for the upward transportation of water throughout the plant or tree, probably the most vital unction of the plants organic tissue.















34 - Gymnosperm Leaf
Gymnosperm are a group of seed-bearing plants which have cone like leaves. There are many variations of gymnosperm plants. This needle like bush is a common example of a gymnosperm plant. The leaves are long, broken and cone like showing the traits of a gymnosperm plant.















33 - Phloem
Phloem is the organic tissue in plants that transports nutrients about the plants leaves, mainly sucrose which is a plant sugar. Inside this plants stems lies layers of phloem tissue which carries nutrients vital to the survival of the plant.















32- Homologous Structures
Homologous structures are like analogous structures. They are characteristics or in this case, anatomical structures that perform the same function. however, Homologous structures are structures found in separate species that tie back into a similar ancestor. The pictures are of my and my cats hand/paw. Both structures perform similar functions of interaction such as gathering food, balance and protection and both species date back to a similar line of ancestry being part of the same kingdom, phylum, class and order.















31 - Long Day Plant
This piece of lettuce is an example of a long day plant. Long day plants are plants that require fewer amounts of darkness to produce flowers. Lettuce plants are known as long day facultative plants meaning they require less darkness and bloom in late spring to early summer.




30- Analogous Structures
Analogous structures are structures on an organism that relate to the appearance and function of a similar structure on another unrelated organism. This example is of wings that serve both this dragon fly and flock of geese for the function of flight as a means of predation and transportation.
















29 - Tropism
A tropism is a physical response, usually exhibited by plants either moving the organism towards or away from a stimulus. This dandelion leans towards the zone of the sprinkler in my back yard obviously to increase its rate of nutrition.















28 - Gibberellins
Gibberellins are plant regulatory hormones that regulate most of the plants growth processes. This photograph is of a stem of a simple plant. I photographed the stem of this plant because gibberellins are responsible for regulating stem elongation in this plant.















27- Lichen on Tree
Lichen are composite organisms that posses symbiotic traits. being symbiotic, lichen are usually found attached to trees or rocks. This example of a Lichen is attached to an old oak tree found at a park.















26 Lichen on Rock
This form of lichen, like on the tree, lives off of another object - this rock. Lichen are noted for their widespread population and ability to survive extreme conditions.















25- r -Strategist
In Eric Pianca's theory of ecology, different species of animals are biologically prone to practicing one of two styles of reproduction. In his theory, the two types are the r and k types. An k-strategist will invest heavily into fewer offspring giving each of the offspring a greater chance of survival. On the other hand, there are r-strategists that produce the maximum number of offspring with a higher mortality rate. Turtles are one of many species that follow the r stategy. Turtle produce many offspring due to the ferocity of it's natural environment. Turtles face many dangers including predators and rough currents especially as infants, so many of the youngings do not reach adulthood explaining why turtles are part of the r- strategist groups.











24- Population (Plant)
Plants also group together in what is known as populations. This photo is an example of a population of pink carnations living together in the same flower bed.










23 - Population (Animal)
A population is a group of a single species living together in one environment. This photo is of a population of North American Geese I took in Eisenhower park.















22 - Seed Dispersal (water)
Certain plants can populate vast regions due to lightweight and aerodynamic seed structures. This photo shows a common weed seed being dispersed via pond water. Seeds can be dispersed by various methods either by being carried by water, animal fur, wind or even human interaction.















21 - Bilateral Symmetry
This leaf, as most are, shows bilateral or vertical symmetry. Bilateral symmetry in plants means that is sliced in half vertically, both halves of a leaf will be structurally identical. Humans also show bilateral symmetry in structure meaning both halves of the body contain roughly the same shape as if cut by a mirror.















20- Dominant vs. Recessive Phenotype.
This is a photograph of my second cats hind foot. I chose to photograph my cats foot because it shows evidence of two different phenotypes for the toe color trait. Including its front legs, my cat has 19 black colored toes and only one pink colored one proving that the black color trait is the dominant phenotype in this set. For certain traits, there may be various contributing factors explaining why my cat has only one discolored toe, obviously proving that my cat has opposing alleles for this one trait making it a hybrid.

1 comment:

  1. Andrew,

    Great job on this -- both in photos and very complete explanations!

    Great examples of lichens and analogous vs. homologous traits. I love that you tackled r-strategy.

    My only correction is on asexual reproduction. Any part of a flower involves sexual reproduction. That's the whole reason for being for a flower. Asexual reproduction examples for plants would have to NOT involve flowers or seeds or spores.

    ReplyDelete

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