Plant Issues: The Role of Epidermis and Bark in Plant Protection

The video tutorial explores the protective role of the plant epidermis, comparing it to human skin. It discusses the epidermis' functions, such as protection against injury and water loss, and its role in gas exchange through stomata. The tutorial also covers water conservation strategies in desert plants, like cacti, and the formation of bark as plants grow. The importance of plants in sustaining life on Earth is emphasized, highlighting their role in providing food, medicine, and maintaining ecosystems.

What is the primary function of the plant epidermis?

• To store water

• To absorb sunlight for photosynthesis

• To protect internal plant tissues

• To transport nutrients

How do epidermal cells protect plants from insect attacks?

• By secreting a sticky substance

• By forming hair-like structures and spines

• By producing toxins

• By changing color

Why is the epidermis thicker in desert plants like cacti?

• To reduce water loss

• To support the plant structure

• To attract pollinators

• To enhance photosynthesis

What adaptation helps cactus plants conserve water?

• Reducing leaves to spines

• Growing taller

• Storing water in flowers

• Having large leaves

What role do epidermal cells in roots play?

• They help in photosynthesis

• They aid in water absorption

• They protect against herbivores

• They store nutrients

What are stomata responsible for in plants?

• Exchanging gases

• Absorbing nutrients

• Storing water

• Producing seeds

Why do cactus plants open their stomata at night?

• To avoid water loss during the day

• To absorb more sunlight

• To attract nocturnal insects

• To release stored water

What replaces the epidermis as a plant grows into a tree?

• Roots

• Leaves

• Bark

• Flowers

What is the primary function of the bark in trees?

• To store nutrients

• To protect against environmental factors

• To provide structural support

• To conduct photosynthesis

Why is it important to use forests sustainably?

• To maintain biodiversity and ecosystem services

• To ensure continuous oxygen supply

• To prevent soil erosion

• To increase timber production