Question

Identify the following as radiolarians, foraminiferans, or both, using the following key: These have endoskeletons composed of silicon dioxide. R = Radiolarians F = Foraminiferans Globigerina sp. is an example. RF = Radiolarians and foraminiferan These have colorful shells composed of calcium carbonate. Fossil species of these are helpful in correlating the age of geologic strata. These have threadlike, branched pseudopods. Stylatractus sp. is an example. These are fossil species that form limestone. Sediment of these organisms can be greater than 4,000 meters thick. These have thin, stiff pseudopods. These are found in marine environments.

Answer 1

4)

A) they have endoskeleton made up of silica. = R

B) globigernia sp is an example = F ( formaniferans)

C) they have colorful shells made up of calcium carbonate = F ( formaniferans)

D) fossil species of these are helpful in correlating the age of geologic strata

E) stylatactus sp is an example = R ( radiolarians )

F) these are species that form limestone = F

F) sediment of these species can be greater than 4000 meter thick = R ( radiolarians)

G) these have thin, stiff pseudopodes = F / R

H) these are found in marine environments = R/ F

4.6) during conjugation teo cells are attached with help of sex pilli. Through this tube genetic materia is transferred from doner to recipient.

4.7) protist has various cellular organelles similar to animals. Apart of this they also show mobility using cilia or flagella and heterotropgy. Due to these characteristics it is similar to animals