In this wayT they will increase their vocabularies in an ordered and productive way, thereby benefiting even if none of their new words appears on the test that they take. | MODEL TEST 3 331 43. Click on the sentence in paragraph 4 that brings into question the current belief that protozoans are single celled. Paragraph 4 is marked with an arrow - . some protozoans enabling them to make some of their own food from water and carbon dioxide. Protozoans are not considered plants but 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 such as eating breathing and reproducing. Many species of protozoans collect into colonies physically connected to one another and responding uniformly to outside stimulae. Current research into this phenomenon along with investigations carried out with advanced microscopes may necessitate a redefinition 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 methods of observation better models of classification of these simple single cells will be proposed. End n 44. The word uniformly in paragraph 4 is closest in meaning to 35 in the same way once in a while all of a sudden in the long run End some protozoans enabling them to make some of their own food from water and carbon dioxide. Protozoans are not considered plants but 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 such as eating breathing and reproducing. Many species of protozoans collect into colonies physically connected to one another and responding uniformly to outside stimulae. Current research into this phenomenon atong with investigations carried out with advanced microscopes may necessitate a redefinition
