Seed Dispersal Mechanisms and Adaptations

The video explains the importance of seed and fruit dispersal in plants to prevent overcrowding, find new habitats, and control diseases. It covers various dispersal methods: wind, animals, water, and self-dispersal. Wind dispersal involves adaptations like fine hairs and wing-like structures. Animal dispersal includes edible fruits and seeds with hooks. Water dispersal relies on floating adaptations. Some plants use self-dispersal by bursting open to scatter seeds.

Why is it important for plants to disperse their seeds?

• To ensure seeds remain close to the parent plant

• To avoid overcrowding and find new habitats

• To reduce the number of plant species

• To increase competition among plants

Which feature helps seeds disperse through the air?

• Fine hairs or wing-like structures

• Thick shells

• Bright colors

• Heavy weight

How do animals typically disperse seeds?

• By destroying them

• By using them as nesting material

• By burying them underground

• By eating the seeds and excreting them elsewhere

What is a common feature of fruits dispersed by animals?

• They are usually inedible

• They have a waterproof coating

• They are often brightly colored and scented

• They are very small and light

What role do hook-like structures play in seed dispersal?

• They allow seeds to attach to animal fur

• They make seeds more attractive to animals

• They protect seeds from being eaten

• They help seeds float on water

What adaptation allows coconut seeds to disperse by water?

• Brightly colored skin

• Waterproof skin and fibrous husk

• Parachute-like hairs

• Hook-like structures

Which plant's seeds are adapted to float on water?

• Maple

• Orchid

• Water lily

• Tomato

Which plant is known for its seeds being dispersed by bursting open?

• Balsam

• Dandelion

• Coconut

• Maple

Which of the following is NOT a method of seed dispersal?

• Animals

• Water

• Fire

• Wind

What happens to legumes as they dry up?

• They become more buoyant

• They split open to release seeds

• They change color to attract animals

• They develop a sweet scent