each sentence has four underlined words or phrases marked 'a,' 'b,' 'c,' and 'd.' Choose the one word or phrase that must be changed in order for the sentence to be correct.

each sentence has four underlined words or phrases marked 'a,' 'b,' 'c,' and 'd.' Choose the one word or phrase that must be changed in order for the sentence to be correct.

each sentence has four underlined words or phrases marked 'a,' 'b,' 'c,' and 'd.' Choose the one word or phrase that must be changed in order for the sentence to be correct.

each sentence has four underlined words or phrases marked 'a,' 'b,' 'c,' and 'd.' Choose the one word or phrase that must be changed in order for the sentence to be correct.

each sentence has four underlined words or phrases marked 'a,' 'b,' 'c,' and 'd.' Choose the one word or phrase that must be changed in order for the sentence to be correct.

each sentence has four underlined words or phrases marked 'a,' 'b,' 'c,' and 'd.' Choose the one word or phrase that must be changed in order for the sentence to be correct.

each sentence has four underlined words or phrases marked 'a,' 'b,' 'c,' and 'd.' Choose the one word or phrase that must be changed in order for the sentence to be correct.

each sentence has four underlined words or phrases marked 'a,' 'b,' 'c,' and 'd.' Choose the one word or phrase that must be changed in order for the sentence to be correct.

each sentence has four underlined words or phrases marked 'a,' 'b,' 'c,' and 'd.' Choose the one word or phrase that must be changed in order for the sentence to be correct.

each sentence has four underlined words or phrases marked 'a,' 'b,' 'c,' and 'd.' Choose the one word or phrase that must be changed in order for the sentence to be correct.

each sentence has four underlined words or phrases marked 'a,' 'b,' 'c,' and 'd.' Choose the one word or phrase that must be changed in order for the sentence to be correct.

each sentence has four underlined words or phrases marked 'a,' 'b,' 'c,' and 'd.' Choose the one word or phrase that must be changed in order for the sentence to be correct.

each sentence has four underlined words or phrases marked 'a,' 'b,' 'c,' and 'd.' Choose the one word or phrase that must be changed in order for the sentence to be correct.

each sentence has four underlined words or phrases marked 'a,' 'b,' 'c,' and 'd.' Choose the one word or phrase that must be changed in order for the sentence to be correct.

each sentence has four underlined words or phrases marked 'a,' 'b,' 'c,' and 'd.' Choose the one word or phrase that must be changed in order for the sentence to be correct.

Read the below passage for questions. You are to choose the best answer 'a,' 'b,' 'c,' or 'd' for each question.

1. The protozoan are minute, aquatic creatures, each consisting of a single cell of protoplasm. They constitute a class of the most primitive forms of animal life. They are fantastically diverse, but three major groups may be identified on the basis of their motility. The Mastigophora have one or more long tails, which they use to project themselves forward. The Ciliata, which use the same basic means for locomotion as the Mastigophora, have a larger number of short tails. The Sarcodina, which include amoeba, float or row themselves about on their crusted bodies.
2. In addition to their form of movement, several other features seperate the three groups of protozoans. For example, at least two nuclei per cell have been identified in the Ciliata. They usually have one large nucleus that regulates growth and decomposes during reproduction and a smaller nucleus that contains the genetic code necessary to generate the large nucleus.
3. Protozoans are considered animals because unlike pigmented plants to which some protozoans are otherwise almost identical, they do not live on simple organic compounds. Their cell demonstrates all of the major characteristics of the cells of higher animals.
4. Many species of protozoans collect into colonies, physically connected to eachother and respond uniformly to outside stimulae. Current research into this phenomenon along with investigations carried out with advanced microscopes may necessitate a re-definition of what constitutes protozoans, even calling into question the basic premise that they have only one cell. Nevertheless with the current data available, almost 40,000 species of protozoans have been identified. No doubt as technology improves our method of observation, better models of classification will be proposed.

Read the below passage for questions. You are to choose the best answer 'a,' 'b,' 'c,' or 'd' for each question.

1. The protozoan are minute, aquatic creatures, each consisting of a single cell of protoplasm. They constitute a class of the most primitive forms of animal life. They are fantastically diverse, but three major groups may be identified on the basis of their motility. The Mastigophora have one or more long tails, which they use to project themselves forward. The Ciliata, which use the same basic means for locomotion as the Mastigophora, have a larger number of short tails. The Sarcodina, which include amoeba, float or row themselves about on their crusted bodies.
2. In addition to their form of movement, several other features seperate the three groups of protozoans. For example, at least two nuclei per cell have been identified in the Ciliata. They usually have one large nucleus that regulates growth and decomposes during reproduction and a smaller nucleus that contains the genetic code necessary to generate the large nucleus.
3. Protozoans are considered animals because unlike pigmented plants to which some protozoans are otherwise almost identical, they do not live on simple organic compounds. Their cell demonstrates all of the major characteristics of the cells of higher animals.
4. Many species of protozoans collect into colonies, physically connected to eachother and respond uniformly to outside stimulae. Current research into this phenomenon along with investigations carried out with advanced microscopes may necessitate a re-definition of what constitutes protozoans, even calling into question the basic premise that they have only one cell. Nevertheless with the current data available, almost 40,000 species of protozoans have been identified. No doubt as technology improves our method of observation, better models of classification will be proposed.

Read the below passage for questions. You are to choose the best answer 'a,' 'b,' 'c,' or 'd' for each question.

1. The protozoan are minute, aquatic creatures, each consisting of a single cell of protoplasm. They constitute a class of the most primitive forms of animal life. They are fantastically diverse, but three major groups may be identified on the basis of their motility. The Mastigophora have one or more long tails, which they use to project themselves forward. The Ciliata, which use the same basic means for locomotion as the Mastigophora, have a larger number of short tails. The Sarcodina, which include amoeba, float or row themselves about on their crusted bodies.
2. In addition to their form of movement, several other features seperate the three groups of protozoans. For example, at least two nuclei per cell have been identified in the Ciliata. They usually have one large nucleus that regulates growth and decomposes during reproduction and a smaller nucleus that contains the genetic code necessary to generate the large nucleus.
3. Protozoans are considered animals because unlike pigmented plants to which some protozoans are otherwise almost identical, they do not live on simple organic compounds. Their cell demonstrates all of the major characteristics of the cells of higher animals.
4. Many species of protozoans collect into colonies, physically connected to eachother and respond uniformly to outside stimulae. Current research into this phenomenon along with investigations carried out with advanced microscopes may necessitate a re-definition of what constitutes protozoans, even calling into question the basic premise that they have only one cell. Nevertheless with the current data available, almost 40,000 species of protozoans have been identified. No doubt as technology improves our method of observation, better models of classification will be proposed.

Read the below passage for questions. You are to choose the best answer 'a,' 'b,' 'c,' or 'd' for each question.

1. The protozoan are minute, aquatic creatures, each consisting of a single cell of protoplasm. They constitute a class of the most primitive forms of animal life. They are fantastically diverse, but three major groups may be identified on the basis of their motility. The Mastigophora have one or more long tails, which they use to project themselves forward. The Ciliata, which use the same basic means for locomotion as the Mastigophora, have a larger number of short tails. The Sarcodina, which include amoeba, float or row themselves about on their crusted bodies.
2. In addition to their form of movement, several other features seperate the three groups of protozoans. For example, at least two nuclei per cell have been identified in the Ciliata. They usually have one large nucleus that regulates growth and decomposes during reproduction and a smaller nucleus that contains the genetic code necessary to generate the large nucleus.
3. Protozoans are considered animals because unlike pigmented plants to which some protozoans are otherwise almost identical, they do not live on simple organic compounds. Their cell demonstrates all of the major characteristics of the cells of higher animals.
4. Many species of protozoans collect into colonies, physically connected to eachother and respond uniformly to outside stimulae. Current research into this phenomenon along with investigations carried out with advanced microscopes may necessitate a re-definition of what constitutes protozoans, even calling into question the basic premise that they have only one cell. Nevertheless with the current data available, almost 40,000 species of protozoans have been identified. No doubt as technology improves our method of observation, better models of classification will be proposed.

Read the below passage for questions. You are to choose the best answer 'a,' 'b,' 'c,' or 'd' for each question.

1. The protozoan are minute, aquatic creatures, each consisting of a single cell of protoplasm. They constitute a class of the most primitive forms of animal life. They are fantastically diverse, but three major groups may be identified on the basis of their motility. The Mastigophora have one or more long tails, which they use to project themselves forward. The Ciliata, which use the same basic means for locomotion as the Mastigophora, have a larger number of short tails. The Sarcodina, which include amoeba, float or row themselves about on their crusted bodies.
2. In addition to their form of movement, several other features seperate the three groups of protozoans. For example, at least two nuclei per cell have been identified in the Ciliata. They usually have one large nucleus that regulates growth and decomposes during reproduction and a smaller nucleus that contains the genetic code necessary to generate the large nucleus.
3. Protozoans are considered animals because unlike pigmented plants to which some protozoans are otherwise almost identical, they do not live on simple organic compounds. Their cell demonstrates all of the major characteristics of the cells of higher animals.
4. Many species of protozoans collect into colonies, physically connected to eachother and respond uniformly to outside stimulae. Current research into this phenomenon along with investigations carried out with advanced microscopes may necessitate a re-definition of what constitutes protozoans, even calling into question the basic premise that they have only one cell. Nevertheless with the current data available, almost 40,000 species of protozoans have been identified. No doubt as technology improves our method of observation, better models of classification will be proposed.

Read the below passage for questions. You are to choose the best answer 'a,' 'b,' 'c,' or 'd' for each question.

1. The protozoan are minute, aquatic creatures, each consisting of a single cell of protoplasm. They constitute a class of the most primitive forms of animal life. They are fantastically diverse, but three major groups may be identified on the basis of their motility. The Mastigophora have one or more long tails, which they use to project themselves forward. The Ciliata, which use the same basic means for locomotion as the Mastigophora, have a larger number of short tails. The Sarcodina, which include amoeba, float or row themselves about on their crusted bodies.
2. In addition to their form of movement, several other features seperate the three groups of protozoans. For example, at least two nuclei per cell have been identified in the Ciliata. They usually have one large nucleus that regulates growth and decomposes during reproduction and a smaller nucleus that contains the genetic code necessary to generate the large nucleus.
3. Protozoans are considered animals because unlike pigmented plants to which some protozoans are otherwise almost identical, they do not live on simple organic compounds. Their cell demonstrates all of the major characteristics of the cells of higher animals.
4. Many species of protozoans collect into colonies, physically connected to eachother and respond uniformly to outside stimulae. Current research into this phenomenon along with investigations carried out with advanced microscopes may necessitate a re-definition of what constitutes protozoans, even calling into question the basic premise that they have only one cell. Nevertheless with the current data available, almost 40,000 species of protozoans have been identified. No doubt as technology improves our method of observation, better models of classification will be proposed.

Read the below passage for questions. You are to choose the best answer 'a,' 'b,' 'c,' or 'd' for each question.

1. The protozoan are minute, aquatic creatures, each consisting of a single cell of protoplasm. They constitute a class of the most primitive forms of animal life. They are fantastically diverse, but three major groups may be identified on the basis of their motility. The Mastigophora have one or more long tails, which they use to project themselves forward. The Ciliata, which use the same basic means for locomotion as the Mastigophora, have a larger number of short tails. The Sarcodina, which include amoeba, float or row themselves about on their crusted bodies.
2. In addition to their form of movement, several other features seperate the three groups of protozoans. For example, at least two nuclei per cell have been identified in the Ciliata. They usually have one large nucleus that regulates growth and decomposes during reproduction and a smaller nucleus that contains the genetic code necessary to generate the large nucleus.
3. Protozoans are considered animals because unlike pigmented plants to which some protozoans are otherwise almost identical, they do not live on simple organic compounds. Their cell demonstrates all of the major characteristics of the cells of higher animals.
4. Many species of protozoans collect into colonies, physically connected to eachother and respond uniformly to outside stimulae. Current research into this phenomenon along with investigations carried out with advanced microscopes may necessitate a re-definition of what constitutes protozoans, even calling into question the basic premise that they have only one cell. Nevertheless with the current data available, almost 40,000 species of protozoans have been identified. No doubt as technology improves our method of observation, better models of classification will be proposed.

Read the below passage for questions. You are to choose the best answer 'a,' 'b,' 'c,' or 'd' for each question.

1. The protozoan are minute, aquatic creatures, each consisting of a single cell of protoplasm. They constitute a class of the most primitive forms of animal life. They are fantastically diverse, but three major groups may be identified on the basis of their motility. The Mastigophora have one or more long tails, which they use to project themselves forward. The Ciliata, which use the same basic means for locomotion as the Mastigophora, have a larger number of short tails. The Sarcodina, which include amoeba, float or row themselves about on their crusted bodies.
2. In addition to their form of movement, several other features seperate the three groups of protozoans. For example, at least two nuclei per cell have been identified in the Ciliata. They usually have one large nucleus that regulates growth and decomposes during reproduction and a smaller nucleus that contains the genetic code necessary to generate the large nucleus.
3. Protozoans are considered animals because unlike pigmented plants to which some protozoans are otherwise almost identical, they do not live on simple organic compounds. Their cell demonstrates all of the major characteristics of the cells of higher animals.
4. Many species of protozoans collect into colonies, physically connected to eachother and respond uniformly to outside stimulae. Current research into this phenomenon along with investigations carried out with advanced microscopes may necessitate a re-definition of what constitutes protozoans, even calling into question the basic premise that they have only one cell. Nevertheless with the current data available, almost 40,000 species of protozoans have been identified. No doubt as technology improves our method of observation, better models of classification will be proposed.

Read the below passage for questions. You are to choose the best answer 'a,' 'b,' 'c,' or 'd' for each question.

1. The protozoan are minute, aquatic creatures, each consisting of a single cell of protoplasm. They constitute a class of the most primitive forms of animal life. They are fantastically diverse, but three major groups may be identified on the basis of their motility. The Mastigophora have one or more long tails, which they use to project themselves forward. The Ciliata, which use the same basic means for locomotion as the Mastigophora, have a larger number of short tails. The Sarcodina, which include amoeba, float or row themselves about on their crusted bodies.
2. In addition to their form of movement, several other features seperate the three groups of protozoans. For example, at least two nuclei per cell have been identified in the Ciliata. They usually have one large nucleus that regulates growth and decomposes during reproduction and a smaller nucleus that contains the genetic code necessary to generate the large nucleus.
3. Protozoans are considered animals because unlike pigmented plants to which some protozoans are otherwise almost identical, they do not live on simple organic compounds. Their cell demonstrates all of the major characteristics of the cells of higher animals.
4. Many species of protozoans collect into colonies, physically connected to eachother and respond uniformly to outside stimulae. Current research into this phenomenon along with investigations carried out with advanced microscopes may necessitate a re-definition of what constitutes protozoans, even calling into question the basic premise that they have only one cell. Nevertheless with the current data available, almost 40,000 species of protozoans have been identified. No doubt as technology improves our method of observation, better models of classification will be proposed.

Read the below passage for questions. You are to choose the best answer 'a,' 'b,' 'c,' or 'd' for each question.

1. The protozoan are minute, aquatic creatures, each consisting of a single cell of protoplasm. They constitute a class of the most primitive forms of animal life. They are fantastically diverse, but three major groups may be identified on the basis of their motility. The Mastigophora have one or more long tails, which they use to project themselves forward. The Ciliata, which use the same basic means for locomotion as the Mastigophora, have a larger number of short tails. The Sarcodina, which include amoeba, float or row themselves about on their crusted bodies.
2. In addition to their form of movement, several other features seperate the three groups of protozoans. For example, at least two nuclei per cell have been identified in the Ciliata. They usually have one large nucleus that regulates growth and decomposes during reproduction and a smaller nucleus that contains the genetic code necessary to generate the large nucleus.
3. Protozoans are considered animals because unlike pigmented plants to which some protozoans are otherwise almost identical, they do not live on simple organic compounds. Their cell demonstrates all of the major characteristics of the cells of higher animals.
4. Many species of protozoans collect into colonies, physically connected to eachother and respond uniformly to outside stimulae. Current research into this phenomenon along with investigations carried out with advanced microscopes may necessitate a re-definition of what constitutes protozoans, even calling into question the basic premise that they have only one cell. Nevertheless with the current data available, almost 40,000 species of protozoans have been identified. No doubt as technology improves our method of observation, better models of classification will be proposed.