The Journey From Seed to Shoot: Unraveling Germination and Dormancy

The video explores the fascinating process of seed germination, starting with an introduction to what causes seeds to germinate and the concept of dormancy. It explains that seeds often require a dormant period before germination, which can last from days to years, depending on the species. Dormancy helps seeds survive harsh conditions and aids in dispersal. The germination process involves the breakdown of food reserves and embryo growth, triggered by factors like temperature and water. Some seeds need their coats broken to germinate. The video also highlights the remarkable longevity of some seeds, with examples of seeds germinating after centuries.

Why do some seeds not germinate immediately after being shed?

• They need to be exposed to sunlight

• They must pass through a dormant period

• They require a specific soil type

• They need to be eaten by animals

What is one benefit of seed dormancy?

• Increased seed size

• Reduced competition for resources

• Protection from predators

• Immediate growth into a plant

How do dormant seeds survive harsh environmental conditions?

• By increasing their size

• By absorbing more water

• By remaining dry and reducing vital activities

• By growing rapidly

What is a characteristic of dormant seeds?

• Immediate germination

• High water content

• Anaerobic respiration

• Rapid growth

What is the initial step in the germination process?

• Absorption of water by the seed

• Breaking of the seed coat

• Increase in temperature

• Exposure to sunlight

Which factor can trigger the germination of seeds?

• Change in water availability

• Presence of insects

• Lack of oxygen

• High soil acidity

What happens to the seed coat during germination?

• It remains unchanged

• It changes color

• It breaks down

• It becomes impermeable

What is the role of animals in the germination of some seeds?

• They provide nutrients

• They help break the seed coat

• They plant seeds in the soil

• They protect seeds from harsh weather

What is a unique feature of seeds from the melon family?

• They require fire to germinate

• They germinate only in desert conditions

• They can germinate after a few years of storage

• They need to be frozen first

What is the longest recorded dormancy period for a seed that successfully germinated?

• 50 years

• 2,000 years

• 101 years

• 500 years