Science (B2 Core) EXAM QUESTIONS AND CORRECT DETAILED ANSWERS

Science (B2 Core) EXAM QUESTIONS AND CORRECT DETAILED ANSWERS How are living organisms classified? - ANSWER- According to their shared characteristics. How many kingdoms are there? - ANSWER- 5 What are the features of protista? - ANSWER- They are single-celled, have a nucleus, some have chloroplasts, no cell wall, organelles present. What is the feeding method for a protista? - ANSWER- Photosynthesis or ingestion of other organisms. What is the movement of a protista? - ANSWER- Moving using cilia or flagella. What are the features of monera? - ANSWER- Single-celled, no nucleus, no chloroplasts, have a cell wall. What is the feeding method for monera? - ANSWER- Absorb nutrients through cell wall, or produce their own. What is the movement of a monera? - ANSWER- May or may not move. What are the features of fungi? - ANSWER- Multicellular, have a nucleus, no chloroplasts, have a cell wall. What is the feeding method for fungi? - ANSWER- Acquire nutrients from decaying material. What is the movement of a fungi? - ANSWER- No mechanisms for movement. What are the features of plants? - ANSWER- Multicellular, have a nucleus, chloroplasts and cell walls. What is the feeding method of plants? - ANSWER- Requires sunlight to make food through photosynthesis. What is the movement of a plant? - ANSWER- Most don't move. What are the features of an animal? - ANSWER- Multicellular, have a nucleus, no chloroplasts, no cell wall. What is the feeding method of an animal? - ANSWER- Acquire nutrients by ingestion. What is the movement of an animal? - ANSWER- Moving using cilia, flagella or muscles. What is a hybrid? - ANSWER- When two different species mate and reproduce. Why can't hybrids be called new species? - ANSWER- They are infertile. Why is it difficult to classify organisms? - ANSWER- The variety of life is a continuous spectrum which makes it difficult to place them in distinct groups. What are the difficulties of classifying organisms? - ANSWER- Organisms that only reproduce asexually can be hard to classify and organisms are constantly changing to suit their environment. How can evolutionary relationships be displayed? - ANSWER- In evolutionary trees. What are the 5 kingdoms divided into? - ANSWER- Phyla. What is each phylum divided into? - ANSWER- Class. What is each class divided into? - ANSWER- Order. What is each order divided into? - ANSWER- Family.