by Tiwari Academy
NCERT Solutions for Class 7 Science Curiosity Chapter 10 Life Processes in Plants revised for Session 2025-26. Tiwari Academy provide accurate and well-structured answers to Class 7 Science questions, helping students understand essential processes like photosynthesis, water and food transport, respiration and the role of stomata and chlorophyll. These solutions explain key concepts through activities, diagrams and real-life applications. They promote clarity and critical thinking, making it easier for students to grasp plant biology and perform in their exams.
Class 7 Science Solutions
Class 7 Science Curiosity Chapter 10 Solutions
Class 7 Science Curiosity Chapter 10 Very Short Answer Type Questions
What is photosynthesis?
See AnswerPhotosynthesis is the process by which plants prepare food using sunlight, carbon dioxide, water, and chlorophyll.
Which part of the plant performs photosynthesis?
See AnswerLeaves are the primary site of photosynthesis in plants.
What are stomata?
See AnswerStomata are tiny pores on leaves that help in the exchange of gases like oxygen and carbon dioxide.
Which gas is released during photosynthesis?
See AnswerOxygen.
What are the two transport tissues in plants?
See AnswerXylem and phloem.
Class 7 Science Curiosity Chapter 10 Short Answer Type Questions
What role does chlorophyll play in photosynthesis?
See AnswerChlorophyll absorbs sunlight and helps convert water and carbon dioxide into glucose (food) and oxygen during photosynthesis.
Why is the iodine test done in leaves?
See AnswerThe iodine test is used to check the presence of starch in leaves, confirming that photosynthesis has occurred.
What does the phloem transport in plants?
See AnswerPhloem transports food prepared in leaves to other parts of the plant, including roots and fruits.
What is the function of the xylem?
See AnswerXylem transports water and minerals from the roots to the stem and leaves of a plant.
Why is carbon dioxide important for photosynthesis?
See AnswerCarbon dioxide is one of the raw materials required for photosynthesis to occur in plants.
Class 7 Science Curiosity Chapter 10 Descriptive Answer Type Questions
How do plants use the glucose produced during photosynthesis?
See AnswerGlucose provides immediate energy to the plant. Extra glucose is converted into starch and stored in leaves, roots, stems and fruits for later use.
Explain the process of water transport in plants.
See AnswerWater and minerals are absorbed by the roots and transported to leaves through the xylem. This supports photosynthesis and helps maintain plant structure.
Describe an activity to show the release of oxygen during photosynthesis.
See AnswerIn a beaker setup with a water plant placed in sunlight, bubbles appear in an inverted test tube, indicating the release of oxygen during photosynthesis.
What happens when a plant is kept in the dark for 36 hours?
See AnswerThe plant becomes destarched, as it cannot perform photosynthesis without sunlight. An iodine test will show no starch in its leaves.
How does temperature affect photosynthesis?
See AnswerTemperature influences the rate of photosynthesis. Too low or too high temperatures can slow down or stop the process, while moderate temperatures increase its efficiency.
Class 7 Science Curiosity Chapter 10 Exploring Questions
Why is photosynthesis essential for all living beings?
See AnswerPhotosynthesis provides oxygen and food, forming the base of the food chain. Without it, life on Earth cannot survive, as animals depend on plants either directly or indirectly.
How does the design of leaves help in photosynthesis?
See AnswerLeaves are broad and flat with many stomata and chloroplasts, maximizing sunlight absorption and gas exchange—making photosynthesis more efficient.
What would happen if all photosynthetic organisms disappeared?
See AnswerThere would be no oxygen production and no primary food source. Life on Earth would not survive without the balance maintained by photosynthetic organisms.
How do plants balance oxygen and carbon dioxide in the environment?
See AnswerDuring photosynthesis, plants absorb carbon dioxide and release oxygen. During respiration, they take in oxygen and release carbon dioxide—creating a natural balance in gases.
Why is respiration in plants important despite photosynthesis?
See AnswerRespiration provides energy by breaking down glucose. Even though photosynthesis makes food, the energy for plant activities comes from respiration.
What is photosynthesis and why is it important as explained in Class 7 Science Curiosity Chapter 10?
In Class 7 Science Curiosity Chapter 10, photosynthesis is described as the process by which green plants make their own food using sunlight, carbon dioxide, water and chlorophyll. This process takes place mainly in the leaves and produces glucose (a form of sugar) and oxygen. Photosynthesis is essential not only for plants but for all living beings, as it produces the oxygen we breathe and forms the base of the food chain. Without photosynthesis, life on Earth would not survive. It helps maintain the balance of oxygen and carbon dioxide in the atmosphere.
How does water travel in plants as per Class 7 Science Curiosity Chapter 10?
According to Class 7 Science Curiosity Chapter 10, water and minerals are absorbed from the soil by the roots and transported to the stem and leaves through special tissues called xylem. This upward movement of water is essential for photosynthesis, cooling the plant and maintaining its structure. Class 7 Science Chapter 10 also explains that once the water reaches the leaves, it is used along with carbon dioxide and sunlight in the process of food-making. Without this water transport system, plants would not be able to survive or grow properly.
Why are stomata important in plants as discussed in Class 7 Science Curiosity Chapter 10?
In Class 7 Science Curiosity Chapter 10, stomata are defined as small pores mostly present on the underside of leaves. These pores play a crucial role in the exchange of gases. During photosynthesis, stomata allow carbon dioxide to enter the leaf and oxygen to exit. They also help in transpiration, which is the loss of water vapour from the plant. This process helps in cooling the plant and pulling up water from the roots. Stomata open and close depending on the plant’s need, making them vital for the plant’s survival and functioning.
What is the most important thing to understand in Class 7 Science Curiosity Chapter 10?
The most important concept in Chapter 10 is photosynthesis how plants make their own food using sunlight, carbon dioxide, water, and chlorophyll. It’s the base of the food chain and keeps oxygen flowing in the environment. You should also understand the roles of xylem and phloem and how plants transport water and food through their body.
Is Class 7 Science Curiosity Chapter 10 full of tough words and terms?
Not really! While terms like chlorophyll, stomata, phloem and transpiration might sound new, the chapter uses simple explanations and fun activities (like iodine tests and leaf experiments) to make them easy. Once you understand what each part of the plant does, you’ll find this chapter quite simple and even fun to learn.
How can I remember the steps of photosynthesis from Chapter 10 easily?
Use this simple line: “Sunlight + Water + Carbon dioxide — with help of Chlorophyll — gives Glucose + Oxygen.” Draw diagrams of leaves and stomata and label them. Try doing the iodine test from the book—it helps you connect theory to real life. Relating it to how plants grow around you will make it stick in your memory.
