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science test
for your science test
| Question | Answer |
|---|---|
| The heart is a part of which body system? | Cardiovascular |
| The correct order of organisation is: | Cells - Tissues - Organs - Organ systems - Organism. |
| The reproductive organ that is found in both plants and the female reproductive system is the: | Ovaries |
| Why do all cells require energy? | To help them stay alive |
| What is the process that plant cells use to produce glucose? | Photosynthesis |
| What is the word equation for photosynthesis? | Carbon dioxide + water + (light energy) glucose + oxygen gas. |
| What organelle does photosynthesis occur in | The chloroplast. |
| There is a relationship between photosynthesis and respiration. Outline how these two processes are linked in plants. | Photosynthesis converts carbon dioxide and water into oxygen and glucose. Cellular respiration converts oxygen and glucose into water and carbon dioxide. |
| Why do multicellular organisms require body systems to survive? | The cells get oxygen and nutrients |
| What is the difference between human and plant reproductive systems? | Plant can reproduce both sexually and asexually whereas humans reproduce only sexually |
| Describe how the digestive and circulatory systems work together. | Your digestive system absorbs water and nutrients from the food you eat. Your circulatory system carries oxygen, water, and nutrients to cells throughout your body. |
| Outline the pathway of the structures air travels through when you breathe in. | Air enters the respiratory system through the nose and mouth and passes down the throat (pharynx) and through the voice box, or larynx. |
| Describe the process of pollination. | Pollen from the male part of the plant) rubs or drops onto a pollinator. The pollinator then take this pollen to another flower, where the pollen sticks to the stigma (the female part). The fertilized flower later yields fruit and seeds. |
| Describe three features of leaves that assist them in performing photosynthesis. | Chloroplast contains a photosynthetic pigment called chlorophyll. The stomata helps regulate water loss from the leaves. leaves have a thin structure so that they can provide a short distance for carbon dioxide to diffuse into leaf cells. |
| What are two functions of the human skeleton? | Protects and supports the organs,allows movement. |
| What is the role of mitosis? | To replace and remake cells. |
| What is the role of meiosis? | To produce sex cells |
| What happens if cell growth is uncontrolled? | Tumors can occur |
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