curiosity 2026

  Chapter 10 Life Processes in Plants Food gives nutrients- carbohydrates, fats, proteins, vitamins, minerals, water essential for growth. Plants obtain nutrients differently than animals. How Do Plants Grow ? Life span changes in plants due to growth & development: → new leaves & branches emerge → height increases → stem thickens Activity: Testing Plant Growth 1. Take 3 pots (same soil) with saplings of chilli/tomato → A, B, C 2. Count leaves at start. 3. Pot A → direct sunlight + daily watering. 4. Pot B → direct sunlight + no water. 5. Pot C → darkness + daily watering. 6. After 2 weeks, record → height, number of leaves, leaf colour, other changes. Observation (after 2 weeks): Pot A → maximum growth - tall, more leaves, green. Pot B → least growth - dried, leaves fell (may have died). Pot C → little growth, weak, yellow. Conclusion: Plants need both sunlight + water for healthy growth. Without water → plants dry. Withou...

Life Processes in Plants 1. Plant Growth Plants grow by developing new leaves, branches, increasing height, and thickening stems. Essential Factors : Water : Absorbed by roots from soil, keeps plants hydrated. Sunlight : Provides energy for growth. Nutrients : Minerals from soil support growth. 2. Photosynthesis Definition : The process by which plants produce food (glucose) using sunlight. Requirements : Sunlight : Provides energy to drive the process. Chlorophyll : Green pigment in leaves that captures sunlight. Carbon dioxide (CO₂) : Taken from the air through stomata. Water : Absorbed by roots from soil. Products : Glucose : Used for energy or stored as starch. Oxygen : Released into the air as a by product. Word Equation : Carbon dioxide + Water → (Sunlight + Chlorophyll) → Glucose + Oxygen Main Site : Leaves, known as “food factories,” but other green parts with chlorophyll (e.g., stems) can also perf...

  Chapter 2 Diversity in the Living World Introduction:  The term  diversity in the living world refers to the vast variety of plants, animals, and microorganisms found on Earth . Each living organism, from the tiniest bacteria to the largest mammals, plays a unique role in the environment. This diversity ensures the survival of ecosystems and is crucial for maintaining the balance of nature . Studying diversity helps us understand the unique features, behaviours, and adaptations of different organisms , allowing us to appreciate the intricate web of life. Grouping of Plants Grouping:   Arranging things into groups based on common features is called grouping. Plants can be grouped into categories based on their characteristics. This makes it easier to study them systematically. 2. Based on Height and Stem Type Herbs : These are small plants with soft, green stems. Examples include coriander, spinach, and tomato plants. Shrubs : T hese are med...