Plant Roles and Seed Dispersal

The video tutorial explains the significance of plants in providing resources like food and oxygen. It covers methods of growing plants through seeds, stems, roots, and leaves. The structure of a seed and the germination process are detailed, highlighting how seeds develop into seedlings. The importance of seed dispersal is discussed, along with various natural agents like wind, water, animals, and explosion that aid in dispersal.

What are some of the essential roles that plants play in our lives?

• They are harmful to the environment.

• They consume all the oxygen.

• They are used only for decoration.

• They provide us with oxygen and food.

Which part of the plant is primarily responsible for growing new plants?

• Leaves

• Seeds

• Flowers

• Bark

What is the outer covering of a seed called, and what is its function?

• Cotyledon; it absorbs sunlight.

• Seed coat; it protects the baby plant inside.

• Seed hole; it allows air to enter.

• Embryo; it stores food.

What conditions are necessary for a seed to germinate?

• Darkness, cold, and dryness

• Air, water, and warmth

• Wind, rain, and snow

• Sunlight, soil, and fertilizer

During germination, what does the seedling rely on for food?

• Nutrients from the soil

• Stored food in the seed leaves

• Water from the environment

• Photosynthesis

Why is seed dispersal important for plants?

• To prevent overcrowding and competition

• To ensure seeds grow close together

• To make seeds heavier

• To keep seeds in one place

Which of the following is NOT an agent of seed dispersal?

• Wind

• Water

• Fire

• Animals

How are seeds like cotton and dandelion dispersed?

• By water

• By animals

• By wind

• By explosion

What adaptation helps coconut seeds to disperse by water?

• They are sticky.

• They explode.

• They have a fibrous covering.

• They have wings.

Which method of seed dispersal involves seeds being carried away by animals?

• Wind dispersal

• Water dispersal

• Explosion dispersal

• Animal dispersal