Ôn Tập Công Nghệ Lớp 4

What are some types of flowers and ornamental plants that can purify the air?

• Aloe Vera

• Snake Plant

• Evergreen

• All of the above

What are the benefits of flowers and ornamental plants for human life?

• Decorative, purifying air, home, etc.

• Leaves used for treating burns, stopping bleeding, helping to heal scars, etc.

• Dried flowers used for making tea, helping to cool the body, beautifying skin, etc.

• All of the above

How much water do ornamental plants need?

• Not too much

• A lot

• Very little

• Not needed

What are the main tasks to care for flowers and ornamental plants?

• Watering flowers and ornamental plants

• Fertilizing flowers and ornamental plants

• Ensuring sufficient light for flowers and ornamental plants; watering flowers and ornamental plants; fertilizing flowers and ornamental plants; pruning old leaves, cleaning and pest control for flowers and ornamental plants.

• Ensuring sufficient light for flowers and ornamental plants

What flower lives underwater, blooms in summer, has petals that are often pink, white, or yellow, and has yellow stamens?

• Cherry Blossom

• Hydrangea

• Apricot Blossom

• Lotus

Arrange the steps to sow flower and ornamental plant seeds in the correct order.

• Sow seeds; lightly water; prepare materials, tools, and equipment for sowing seeds; put the substrate in the pot.

• Lightly water; put the substrate in the pot; prepare materials, tools, and equipment for sowing seeds; sow seeds.

• Prepare materials, tools, and equipment for sowing seeds; put the substrate in the pot; sow seeds; lightly water.

• Put the substrate in the pot; prepare materials, tools, and equipment for sowing seeds; lightly water; sow seeds.

What tool is used for planting flowers and ornamental plants to dig and turn the soil?

What tool for planting flowers and ornamental plants is used to scoop soil, till soil, and make soil loose?

• Shovel

• Watering can

• Saw

• Pruning shears

What is step 2 of the process of sowing flower seeds and ornamental plants in pots?

• Watering

• Adding substrate to the pot

• Sowing seeds

• Preparing materials, tools, and equipment.

How many steps are there in planting flowers and ornamental plants in pots?

• 3 steps

• 4 steps

• 5 steps

• 6 steps