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Q1. What is the main function of the stem?
The stem transports water and minerals from the roots to the leaves and carries food from the leaves to other parts of the plant. Leaves make food, roots absorb water, and flowers produce seeds. The stem is the main transport system of the plant.
Q2. Which part of the plant supports leaves and flowers?
The stem supports the leaves, flowers, and fruits of the plant. It holds them up so they can get sunlight and air. Roots anchor the plant, flowers are for reproduction, and seeds grow into new plants.
Q3. What is the function of leaves?
Leaves make food for the plant through photosynthesis. They use sunlight, carbon dioxide, and water to produce glucose and oxygen. Roots absorb water, and stems hold the plant. Leaves do not produce roots or hold soil.
Q4. Which part of the leaf helps in photosynthesis?
The lamina (leaf blade) is the broad, flat part of the leaf where photosynthesis mainly occurs. It contains chlorophyll to capture sunlight. Veins transport water and food, the petiole attaches the leaf to the stem, and the margin is the edge of the leaf.
Q5. What is the stalk of a leaf called?
The petiole is the stalk that attaches the leaf blade to the stem. The midrib is the main vein, veins are the lines on the leaf, and margin is the edge. The petiole holds the leaf in place.
Q6. What are veins in a leaf?
Veins are the lines or channels on a leaf that transport water, minerals, and food. They also provide support to the leaf. They are not the green part, hair-like structures, or flowers.
Q7. Which part of the plant produces flowers?
The stem produces branches that bear flowers. Flowers are the reproductive parts of the plant, but they grow from the stem. Roots do not produce flowers, leaves make food, and seeds grow into new plants.
Q8. What is the function of flowers?
Flowers are the reproductive organs of plants. They produce seeds through pollination and fertilization. Leaves make food, roots absorb water, and the stem supports the plant.
Q9. Which of the following is a herb?
Mint is a herb because it is a small plant with a soft, green stem. Mango and Neem are trees (tall woody plants), and Rose is a shrub (medium-sized woody plant). Herbs have soft, non-woody stems.
Q10. What are herbs?
Herbs are small plants with soft, green, and non-woody stems. They are usually short-lived. Trees are tall woody plants, and shrubs are medium-sized woody plants. Herbs do have leaves and soft stems.
Q11. What are shrubs?
Shrubs are medium-sized plants with woody stems. They are smaller than trees but larger than herbs. Examples include rose, hibiscus, and tulsi. Herbs are small and soft, trees are tall woody plants.
Q12. Which of the following is a shrub?
Rose is a shrub because it has a woody stem and is medium-sized. Grass, wheat, and mint are herbs (soft stems). Shrubs are woody but not as tall as trees.
Q13. What are trees?
Trees are tall woody plants with a single main trunk. They are the largest plants. Herbs are small, shrubs are medium-sized, and creepers grow along the ground. Trees have hard, woody stems.
Q14. Which is an example of a tree?
Mango is a tree because it is tall and has a woody trunk. Mint is a herb, Rose is a shrub, and Pumpkin is a creeper. Trees are the tallest and most woody plants.
Q15. What are creepers?
Creepers are plants with weak stems that spread along the ground. They cannot stand upright on their own. Examples include pumpkin and watermelon. Climbers climb with support, trees are tall woody plants, and herbs have soft stems.
Q16. Which is a creeper?
Pumpkin is a creeper because it spreads along the ground with weak stems. Grapevine and money plant are climbers (they climb with support), and pea plant is also a climber. Creepers grow horizontally on the ground.
Q17. What are climbers?
Climbers are plants with weak stems that need support to grow upward. They use tendrils or twining stems to climb. Examples include grapevine, money plant, and pea plant. Creepers grow on the ground, trees are tall woody plants.
Q18. Which is a climber?
Grapevine is a climber because it climbs with support. Pumpkin is a creeper, Mint is a herb, and Grass is a herb. Climbers have weak stems and need support to grow upward.
Q19. Why are plants grouped?
Plants are grouped into categories like herbs, shrubs, trees, climbers, and creepers to make their study easier. Grouping helps us understand their similarities and differences. It is not for decoration, cutting, or burning.
Q20. Which part of leaf carries water and food?
Veins in a leaf carry water, minerals, and food. They are the vascular bundles that transport substances. The margin is the edge, the petiole is the stalk, and the lamina is the leaf blade. Veins are the transport system of the leaf.
Q21. Why should we protect biodiversity?
Protecting biodiversity is important for maintaining the balance of nature. It ensures stable ecosystems, provides resources, and supports life on Earth. It is not for pollution, noise, or buildings.
Q22. Which is a way to protect biodiversity?
Planting trees is a way to protect biodiversity. It helps restore forests and provides habitats for wildlife. Cutting forests, hunting animals, and polluting water harm biodiversity. Conservation efforts like planting trees are essential.
Q23. What happens if biodiversity is lost?
Loss of biodiversity disturbs the balance of nature. It can lead to ecosystem collapse, extinction of species, and loss of resources. It does not improve the balance or lead to more forests. Protecting biodiversity is crucial for stability.
Q24. What is Project Tiger?
Project Tiger is a conservation program launched in India to protect tigers and their habitats. It aims to increase tiger populations and prevent extinction. It is not for saving birds, plants, or fish.
Q25. Why was Project Tiger started?
Project Tiger was started to protect tigers from extinction due to poaching and habitat loss. It is a conservation effort to increase tiger numbers. It is not for pollution, cutting forests, or building cities.
Q26. What is the Cheetah Reintroduction Project?
The Cheetah Reintroduction Project aims to bring cheetahs back to India after they became extinct in the country. It is a conservation effort to restore the species. It is not for removing cheetahs, saving cows, or saving trees.
Q27. Why are cheetahs reintroduced?
Cheetahs are reintroduced to restore the balance of the ecosystem. They are top predators that help maintain the population of herbivores. It is not for hunting, farming, or pollution.
Q28. What is the Great Indian Bustard Project?
The Great Indian Bustard Project is a conservation effort to protect the Great Indian Bustard, a critically endangered bird species. It is not for saving fish, insects, or trees. The project focuses on preserving this bird and its habitat.
Q29. Why should birds be protected?
Birds help in seed dispersal by eating fruits and spreading seeds through their droppings. This helps plants grow in new areas. They do not destroy crops intentionally, pollute air, or waste water. Protecting birds is important for the ecosystem.
Q30. Which plant part makes seeds?
Flowers are the reproductive parts of plants. After fertilization, flowers develop into fruits that contain seeds. Leaves make food, roots absorb water, and stems transport substances. Flowers produce seeds for reproduction.
Q31. Which plant part absorbs water from soil?
Roots absorb water and minerals from the soil. They anchor the plant and transport water to the stem. Leaves make food, stems transport, and flowers reproduce. Water absorption is the main function of roots.
Q32. Which plants live for many years?
Trees live for many years because they are woody and long-lived. Herbs, creepers, and climbers usually have shorter lifespans. Trees can survive for decades or even centuries. Their woody stems help them grow tall and live long.
Q33. Which part of leaf is the main vein?
The midrib is the main vein that runs through the centre of the leaf. It branches into smaller veins. The margin is the edge, the petiole is the stalk, and the lamina is the leaf blade. The midrib is the primary vein.
Q34. Which of these is a climber?
Pea plant is a climber because it needs support to grow upward. Mango is a tree, Grass is a herb, and Mint is a herb. Climbers have weak stems and use support to climb.
Q35. Why should forests be protected?
Forests should be protected because they provide habitats for wildlife, produce oxygen, absorb carbon dioxide, and maintain the water cycle. They are not for cutting trees, building roads, or constructing buildings. Protecting forests is essential for the environment.
Q36. Which plant part holds the leaf to stem?
The petiole is the stalk that attaches the leaf to the stem. Veins are the lines on the leaf, the margin is the edge, and the midrib is the main vein. The petiole connects the leaf blade to the stem.
Q37. Which plants need support to grow upward?
Climbers need support to grow upward because their stems are weak. Trees have strong woody stems, herbs are small and soft, and shrubs are medium-sized woody plants. Climbers use tendrils or twining to climb.
Q38. Which plant spreads on ground?
Creepers spread along the ground because their stems are weak. Climbers grow upward with support, trees are tall woody plants, and shrubs are medium-sized woody plants. Creepers like pumpkin and watermelon grow horizontally on the ground.
Q39. Which is a benefit of plants?
Plants produce oxygen through photosynthesis, which is essential for all living organisms. They also provide food, medicine, and habitats. Plants do not cause pollution, noise, or garbage. Oxygen is one of the main benefits of plants.
Q40. Which plants have soft stems?
Herbs have soft, green, and non-woody stems. Trees and shrubs have woody stems, and climbers may have soft stems but climb with support. Herbs are small and have soft stems that do not become woody.
Q41. Why should animals be protected?
Protecting animals is important for maintaining the balance of nature. Animals play key roles in ecosystems as pollinators, seed dispersers, and predators. They help keep the environment healthy. It is not for fun, noise, or pollution.
Q42. Which of these helps protect biodiversity?
Wildlife conservation helps protect biodiversity by preserving species and their habitats. Deforestation, poaching, and pollution harm biodiversity. Conservation efforts like protected areas and breeding programs are essential.
Q43. Which plant part gives shape to plant?
The stem gives shape and structure to the plant. It supports leaves, flowers, and fruits. Roots anchor the plant, leaves make food, and flowers reproduce. The stem determines the plant’s overall form and growth pattern.
Q44. Which part of leaf protects its edges?
The margin is the edge of the leaf that protects it from damage. Veins transport water and food, the petiole attaches the leaf to the stem, and the midrib is the main vein. The margin is the outer boundary of the leaf.
Q45. Which plants are smallest in size?
Herbs are the smallest plants among the categories. Trees are the largest, shrubs are medium-sized, and climbers can vary but are generally not as small as herbs. Herbs have soft stems and are usually short.
Q46. Which project protects national animal of India?
Project Tiger protects the tiger, which is the national animal of India. The Cheetah project is for cheetahs, the Bustard project is for a bird, and tree plantation is for planting trees. Project Tiger is specifically for conserving tigers.
Q47. Which animals are helped by cheetah project?
The Cheetah Reintroduction Project helps cheetahs by bringing them back to India. It is not for birds, reptiles, or fish. The project focuses on restoring the cheetah population in the country.
Q48. Which bird is protected under bustard project?
The Great Indian Bustard Project protects the Great Indian Bustard, a critically endangered bird species. It is not for peacock, sparrow, or eagle. The project focuses on the conservation of this specific bird.
Q49. Which activity harms biodiversity?
Deforestation harms biodiversity by destroying habitats and reducing species populations. Tree plantation, conservation, and protection help biodiversity. Cutting down forests leads to loss of wildlife and ecosystem imbalance.
Q50. Why should students learn about plants?
Students should learn about plants to understand their importance and protect nature. Learning about plants helps us appreciate biodiversity and take action to conserve it. It is not just for exams, cutting plants, or wasting time. Protecting nature is essential for our future.