MSc BIT BSc HND PHP Web Development Projects Assignments Guidance Local London A/L O/L ICT Tuition: Grade 5 Unit 3 ERA ENV Discovering Plants and Trees Why Are Plants Importance Question and Answers

Grade 5 Unit 3 Environmental Studies ENV Discovering Plants and Trees Why Important Different Exams

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0:00 Introduction to Grade 5 Sample Model Paper Questions

0:39 Why plants and Trees Important for human

Oxygen: Plants and trees produce oxygen through photosynthesis. This is the process by which they use sunlight to convert carbon dioxide and water into oxygen and carbohydrates. Humans and other animals need oxygen to breathe.
Food: Plants and trees provide us with food. We eat fruits, vegetables, nuts, and seeds from plants. We also eat meat from animals that eat plants.
Shelter: Plants and trees provide us with shelter from the sun, rain, and wind. We build houses from wood and use leaves to make baskets and other objects.
Climate regulation: Plants and trees help to regulate the climate by absorbing carbon dioxide and releasing oxygen. They also help to cool the air by providing shade.
Soil erosion prevention: Plants and trees help to prevent soil erosion by holding the soil in place with their roots.
Recreation: We enjoy spending time in nature, and plants and trees provide us with beautiful places to relax and enjoy the outdoors.
Education: Plants and trees can teach us about the natural world and the importance of conservation.
Economic benefits: Plants and trees provide us with jobs in the forestry, agriculture, and tourism industries.

1:50 Why Trees are Important

1:51 How to Care Plants

2:55 Names of Vegetables

3:21 Names of Fruits

3:35 How Plants grow in different places

Land: Plants can grow on land in a variety of habitats, including forests, grasslands, deserts, and mountains.
Water: Some plants can grow in water, such as algae and water lilies.
Air: Some plants can grow in the air, such as epiphytes, which grow on the branches of trees.
Artificial habitats: Plants can also be grown in artificial habitats, such as greenhouses and gardens.

4:24 What are the Parts of a plant

Roots: The roots anchor the plant in the soil and absorb water and nutrients.
Stem: The stem supports the plant above ground and transports water and nutrients from the roots to the leaves.
Leaves: The leaves contain chlorophyll, which is used to convert sunlight into food for the plant.
Flowers: Flowers are the reproductive organs of plants. They produce pollen and seeds.
Fruits: Fruits are the ripened ovaries of flowers. They contain seeds that can be planted to grow new plants.

5:19 What is the Functions of roots

Anchoring: Roots anchor the plant in the soil and prevent it from being blown over by the wind.
Absorption: Roots absorb water and nutrients from the soil. Water is used by the plant to transport nutrients and dissolved minerals throughout the plant.
Storage: Roots store food that the plant has produced during photosynthesis. This food can be used by the plant during times of drought or when the plant is not producing enough food.
Transport: Roots transport water and nutrients from the soil to the rest of the plant. This is done through a network of tubes called xylem and phloem.

6:10 How plants reproduce

Budding: A new plant grows from a bud on the parent plant.
Fragmentation: The parent plant breaks into pieces and each piece grows into a new plant.
Spore formation: The parent plant produces spores, which are tiny reproductive units that can grow into new plants.
Vegetative propagation: A new plant is produced from a piece of the parent plant, such as a stem cutting or a root cutting

7:06 How Dispersal of seed happen

Dispersal by agents:
a. Wind: Some plants have seeds that are lightweight and equipped with structures like wings, hairs, or parachutes, which enable them to be carried by the wind over long distances.
Examples include dandelions, maple trees, and cottonwood trees.
b. Water: Seeds of certain plants are adapted to float on water, allowing them to be dispersed by rivers, streams, or ocean currents. Coconut palms and water lilies are examples of plants that disperse seeds through water. c. Animals: Many plants rely on animals to disperse their seeds.
Dispersal by self: a. Self-propulsion: Some plants have mechanisms that enable the seed to be expelled forcefully from the parent plant. This can occur through the bursting of seed pods, as seen in the case of peas or touch-me-not plants

9:18 What are the Seed types

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