**Biodiversity** = the variety of all different plants and animals found in a region.
**Key Plant Features to Observe:**
Stem: soft/hard; Leaves: shape, arrangement (opposite pairs or alternate); Flowers: colour, shape, scent.
**Key Animal Features to Observe:**
Home (tree, soil, water, land); Food (insects, leaves, seeds, grass); Movement (fly, walk, hop, swim, jump).
**Plants Around Us:** Grass (soft stem, alternate leaves), Tulsi (opposite leaves, pink flowers), Neem (hard thick stem, smooth leaves), Hibiscus (colourful flowers).
**Animals Examples:** Crow (tree, insects, fly+walk), Ant (soil, leaves+insects, six legs), Frog (land+water), Fish (water only).
**Grouping Rule:** Group by common features — different groups may use different features, both are correct.
**Plant-Animal Relationship:** Trees give food and shelter → Animals eat fruit and scatter seeds → New plants grow.
**Diagrams to Remember:** Leaf arrangement patterns (opposite vs alternate), plant parts (stem, leaf, flower), animal homes.
**Don't Confuse:** Soft stem ≠ weak plant (grass survives wind). Diversity ≠ just one type (must be many types together).
Q1. What do we call the variety of all different plants and animals living in one region?
Answer: A — Biodiversity specifically means the variety of different plants and animals found in a particular region.
Q2. Which of these is a hard-stemmed plant?
Answer: B — Neem has a hard and thick stem, while grass has a soft thin stem.
Q3. How are tulsi leaves arranged on the stem?
Answer: B — Tulsi has leaves arranged in pairs that grow opposite to each other on the stem.
Q4. Which animal can live both on land and in water?
Answer: C — Frogs are amphibians that live both on land and in water, unlike fish (water only) or crows (land/air only).
Q5. What does a crow do with a twig that it carries in its beak?
Answer: B — Crows carry twigs in their beaks to build nests where they live and raise their young.
Q6. If you observe that an animal has six legs and lives in soil burrows, which animal is it most likely?
Answer: B — Ants have exactly six legs and live in nests and burrows in the soil; spiders have eight legs.
Q7. Based on the table in your textbook, which plant has smooth leaves?
Answer: C — In the observation table, neem leaves are described as having a smooth surface.
Q8. Why do animals help plants in nature's biodiversity?
Answer: B — When animals eat fruits, seeds spread to new locations and grow into new plants, showing the plant-animal relationship.
Q9. During a nature walk, what should you NOT do to respect plants and animals?
Answer: C — During a nature walk, we should not pluck leaves or flowers because this disturbs and harms the plants.
Q10. In the diagram showing different plants' leaves, which pattern shows leaves growing one after another from different points on the stem?
Answer: B — Alternate arrangement means leaves grow from different points on the stem, one after another, like in grass — not opposite each other.
What does biodiversity mean in simple words?
Biodiversity means the variety of different plants and animals living together in one particular place or region.
Name three features we can observe on plants to group them.
Three features are: stem type (soft or hard), leaf shape and arrangement, and flower colour.
How do we observe animals without disturbing them?
We watch quietly from a distance, listen carefully to their sounds, note where they live and what they eat, without touching or chasing them.
What is one example of how plants and animals depend on each other?
Trees give fruit to animals; animals eat the fruit and scatter seeds to new places, helping new trees grow.
Why is it helpful to group plants and animals by their features?
Grouping helps us organize and understand the huge variety in nature, and makes it easier to study and remember different types.
Give one example of a soft-stemmed plant.
Grass is a soft-stemmed plant that is thin and bends easily.
What is a nature walk and why do we do it?
A nature walk is a slow walk in a park or forest where we carefully observe and appreciate the variety of plants and animals around us.
Name one animal that lives both on land and in water.
A frog is an animal that can live both on land and in water.
How are tulsi leaves arranged on its stem?
Tulsi leaves are arranged in opposite pairs on different sides of the stem.
What job do birds play in nature's biodiversity?
Birds eat insects and fruits, give shade-providing trees places to perch, and help spread seeds by carrying them to new locations.
What is biodiversity? Give one example from your surroundings. [1 mark]
Biodiversity = variety of different plants and animals in one place. Give any real example: garden with grass, flowers, and birds; or park with trees and insects.
Name two features of plants that help us group them into different types. [2 marks]
Choose any two from: stem type (soft/hard), leaf shape, leaf arrangement (opposite or alternate), flower colour. Give one example for each (e.g., grass has soft stem, neem has hard stem).
How do plants and animals depend on each other? Explain with one example from nature. [3 marks]
Plants give food and shelter to animals; animals help spread seeds. Example: birds eat fruit from trees and drop seeds in new places where new plants grow. Or: trees give shade and nesting place to birds; birds eat insects that might harm the tree.
During a nature walk, you observed many different plants and animals. Draw and label a simple diagram showing at least three different features of plants (stem, leaves, flowers) and write how they are different from each other. Also explain why we should respect and not disturb them during the walk. [5 marks]
Draw three simple plants with labels: (1) soft thin stem with alternate leaves (grass), (2) hard thin stem with opposite leaves (tulsi), (3) hard stem with flowers (neem or hibiscus). Write how each is different. Explain: disturbing plants stops their growth, harms insects living on them, and is disrespectful to nature. We observe without touching.
Fill in the blanks: (a) Trees provide ________ and ________ to birds and animals. (b) When animals eat fruits, they help spread ________ to new places. (c) All plants and animals together make the ________ of a region. [2 marks]
(a) food, shelter (or shade). (b) seeds. (c) biodiversity. Match correct words to complete the relationship between plants and animals.
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