Exploring Homeostasis in Plants

Miss Brass introduces a video assignment on homeostasis in plants. The video explains homeostasis in humans, focusing on maintaining stable internal conditions through mechanisms like negative feedback. It then shifts to plants, detailing how they maintain homeostasis using stomata, which regulate gas and water exchange. The video highlights the role of stomata in plant homeostasis, especially during water scarcity, illustrating negative feedback. Students are encouraged to use notes to answer questions at the end.

What is homeostasis?

• The process of photosynthesis

• The exchange of gases in plants

• The process of cellular respiration

• The maintenance of a stable internal environment

Tags

NGSS.MS-LS1-3

Which feedback mechanism is most common in the human body?

• Positive feedback

• Cyclic feedback

• Negative feedback

• Neutral feedback

How do plants maintain homeostasis differently from humans?

• By using their stomata

• By using their stems

• By using their roots

• By using their flowers

What are stomata?

• Roots of the plants

• Tiny holes in the leaves of plants

• Flowers of the plants

• Stems of the plants

Tags

NGSS.MS-LS1-6

What gases do plants exchange through stomata?

• Hydrogen and oxygen

• Oxygen and nitrogen

• Carbon dioxide and oxygen

• Methane and carbon dioxide

What happens when stomata are open?

• Water is held in the plant

• The plant stops photosynthesis

• Gases are not exchanged

• Water is released and gases are exchanged

Tags

NGSS.MS-LS1-6

When are stomata more likely to be open?

• When the plant is receiving enough water

• During a drought

• When the plant is in the dark

• When the plant is not photosynthesizing

Tags

NGSS.MS-LS1-5

NGSS.MS-LS1-6

What is the purpose of stomata closing during a drought?

• To stop photosynthesis

• To release more water

• To prevent water loss

• To increase gas exchange

Tags

NGSS.MS-LS2-1

What type of feedback mechanism is involved when a plant closes its stomata to prevent water loss?

• Positive feedback

• Neutral feedback

• Negative feedback

• Cyclic feedback

Why is it important for plants to maintain correct water levels?

• To ensure survival and proper functioning

• To increase the size of leaves

• To prevent gas exchange

• To stop photosynthesis

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1

NGSS.MS-LS2-3