Taxonomy Lab to Show Organism Relationships

6. Analyze results - Graph the data from Table 4 and describe what your graph looks like (you do not have to submit a picture of the actual graph!).

4. Collect data: On the DESCRIPTION pane, check that Time A is selected. Click Fire. Select the TABLE pane to see the results, and fill in the left table below. Click Reset, and on the DESCRIPTION pane select Time A + 6 months. Click Fire and fill in the right table.

Please answer these questions then place them in the drop box for this lab. Use Microsoft word if possible.

6. Restate your predictions that were correct and give the data from your experiment that supports them. Restate your predictions

5) Graph the equation you wrote in step four superimposed over the original data. Comment on how well or how

After embryo development, endosperm is growth to store nutrients. This happens after double fertilization, when the triploid nucleus of the ovule’s central cell divides. This causes the formation of a milky multinucleate “supercell”. This becomes multicellular after cytokinesis. Finally, when the cell walls are completed, the endosperm becomes solid.

Analyze results - Graph the data from Table 4 and describe what your graph looks like (you do not have to submit a picture of the actual graph!).

6. Analyze results - Graph the data from Table 4 and describe what your graph looks like (you do not have to submit a picture of the actual graph).

Suspension feeder – “filter feeder”: capture food by filtering out particles suspended in air or water (ex. baleen whale and krill shrimp)

Use the full data set that you uploaded to answer all questions. Be sure to include the graph for ALL questions.

10. To analyze your data, you will need to learn how to use the Chi-Square Test. The Chi-Square Test (pronounced kahy) will be a part of your lab exam.

The germinal stage marks the beginning of prenatal development when the zygote begins to rapidly divide for one week after conception. However, less than one-half of the zygotes will survive past the first two weeks. The zygotes become more specialized as

[1] "Development of the embryo begins at Stage 1 when a sperm fertilizes an oocyte and together they form a zygote."

The primary form of reproduction for all Echinodermata is sexual reproduction. Sexual reproduction is achieved by the fertilization of a female egg by male spermatozoa. The interesting thing is, echinoderm male and females expel their eggs and spermatozoa into water, a process known as spawning, rather than the human and animal form of sexual reproduction. Once an egg is fertilized by a sperm and an embryo develops, the echinoderm could take several different paths on its way to develop into its juvenile state. Eggs that are small and lack yolk will go through a stage in which it spends time as free-swimming larvae that becomes part of the plankton. These echinoderms will begin their life actively feeding on small organisms until they reach their juvenile stage and begin living on the seafloor. This track of development is known as indirect development. Embryos that develop from large eggs may develop into a larval, which is planktonic, but it would live off of its own yolk rather than feeding off of small organisms before the juvenile stage. This is known ad direct development of echinoderms.

First the veliger is formed; this is the characteristic larva of gastropods. The veliger includes a shell that surrounds the visceral organs of the larva: the digestive tract, much of the nervous system and an excretory organ. Next the foot appears while the velium is developed. The velum is used for swimming, feeding, and gas exchange, and it is lost as the snail fully develops. The anus and intestinal tract come later. This makes them Protostomes, since their anus develops after the mouth. They hatch after 6-8 weeks. In order to hatch the eggs have to release an enzyme to dissolve their protective sack. The babies feed on bryozoans, small barnacles and sometimes other snails. After 2 years they are mature and can live up to 5-8 years.