Nitrogen Cycle and Legumes

The video explores the excitement of science through gardening, focusing on the role of nitrogen. It introduces the Simple Science segment, explaining nitrogen's importance and how legumes fix nitrogen through a symbiotic relationship with bacteria. The video highlights the benefits of legumes in gardening and modern solutions for nitrogen application. It concludes with additional resources for gardening enthusiasts.

What is the main focus of the new segment introduced in the video?

• Advanced gardening techniques

• Gardening tools and equipment

• Simple Science of gardening

• History of gardening

What percentage of the air we breathe is made up of nitrogen?

• 50%

• 60%

• 80%

• 70%

Why is atmospheric nitrogen not directly usable by plants?

• It is too heavy

• It is tightly bound in a molecule

• It is too light

• It is too cold

What role do soil bacteria play in the nitrogen cycle?

• They store nitrogen

• They release nitrogen

• They convert nitrogen into a usable form

• They absorb nitrogen

What is the process called where legumes convert atmospheric nitrogen into a usable form?

• Nitrogen absorption

• Nitrogen storage

• Nitrogen fixation

• Nitrogen release

What do legumes provide to bacteria in exchange for nitrogen fixation?

• Nutrients

• A place to live

• Water

• Sunlight

Which of the following is a common legume that fixes nitrogen?

• Carrots

• Lettuce

• Beans

• Tomatoes

How do legumes benefit nearby plants?

• By providing shade

• By fixing nitrogen accessible to them

• By repelling pests

• By attracting pollinators

What happens when legume plants are broken down and incorporated into the soil?

• They increase soil acidity

• They release toxins

• They deplete soil nutrients

• They make more nitrogen available

Where can gardening enthusiasts find more resources and videos?

• Online forums

• Gardening magazines

• Oklahoma gardening YouTube channel

• Local library