Ecological Changes and Leaf Pigments

The video, led by Jody, a STEM teacher, explores the impact of weather on ecology, focusing on the interaction between plants and animals. It introduces the Nature's Calendar project by the Woodland Trust, which monitors seasonal changes. The video also covers tree identification and explains how leaf colors change with seasons, supported by a craft activity.

What is the primary focus of ecologists as mentioned in the video?

• Studying the weather patterns

• Monitoring the interaction between plants and animals

• Developing new plant species

• Creating artificial habitats

How do seasonal changes affect the environment according to the video?

• They have no impact on the environment

• They cause permanent changes in the ecosystem

• They only affect human activities

• They influence the interaction between plants and animals

What is the purpose of the Nature's Calendar project?

• To predict weather patterns

• To plant more trees

• To monitor seasonal changes in trees

• To create new tree species

Which of the following is a characteristic of a compound leaf?

• It has a smooth edge

• It is made up of smaller leaflets

• It has a single, undivided blade

• It is always green

What tool is suggested for identifying tree species?

• A magnifying glass

• A microscope

• A telescope

• A smartphone app

What is one of the key findings from citizen scientists' data in the UK?

• Spring is arriving later than before

• Spring is arriving earlier than before

• Autumn is longer than before

• Winter is warmer than before

What causes the leaves to change color in autumn?

• Decrease in temperature

• Increase in chlorophyll production

• Decrease in sunlight and breakdown of chlorophyll

• Increase in water absorption

Which pigment is responsible for the green color in leaves?

• Xanthophyll

• Anthocyanin

• Carotene

• Chlorophyll

What is the role of anthocyanin in leaves?

• It stores nutrients

• It reflects red light

• It reflects green light

• It absorbs sunlight

What happens to the pigments in leaves as autumn progresses?

• They become more vibrant

• They change into new pigments

• They increase in number

• They break down and the leaf falls