Questions1. How does light play a crucial role in the process of photosynthesis in plants?2. Why do some plants grow taller in low light conditions, while others thrive in bright sunlight?3. What happens to plants when they do not receive enough light? Explain the effects on their growth and health.4. Why is water important for plant growth, and what happens if a plant gets too much or too little?5. What are the essential nutrients plants need from soil, and what happens if they lack these nutrients?6. Why do plants need carbon dioxide and how do they use it during photosynthesis?
Answer (1)
1. How does light play a crucial role in the process of photosynthesis in plants?Light provides the energy that plants need to convert water and carbon dioxide into glucose (food) and oxygen. In photosynthesis, chlorophyll absorbs sunlight, which powers the chemical reactions in the chloroplasts. Without light, this process cannot happen, so plants cannot produce their own food.2. Why do some plants grow taller in low light conditions, while others thrive in bright sunlight?In low light, some plants stretch taller in a process called etiolation, trying to reach more light. Others, especially shade-loving plants, are adapted to survive and grow well with less light. Sun-loving plants, on the other hand, have evolved to thrive under intense sunlight, so they grow better when they receive more of it.3. What happens to plants when they do not receive enough light?If plants don’t get enough light, they can’t make enough food through photosynthesis. They may become pale or yellow, have weak and thin stems, grow slower, and eventually die if the problem continues.4. Why is water important for plant growth, and what happens if a plant gets too much or too little?Water is vital because it helps transport nutrients, keeps cells firm, and is a raw material for photosynthesis. Too little water causes wilting, slow growth, and eventually death. Too much water can drown roots, cause rot, and block oxygen from reaching the plant.5. What are the essential nutrients plants need from soil, and what happens if they lack these nutrients?Plants need nutrients like nitrogen (for leaves), phosphorus (for roots and flowers), potassium (for overall health), calcium, magnesium, and other trace minerals. Lack of these nutrients can cause stunted growth, yellowing leaves, poor flowering, or weak stems.6. Why do plants need carbon dioxide and how do they use it during photosynthesis?Plants take in carbon dioxide (CO₂) from the air and use it, along with water, to produce glucose during photosynthesis. The carbon in CO₂ becomes part of the plant’s sugars, which they use for energy and growth. Oxygen is released as a byproduct into the air.
