WAEC WAEC Nigeria Biology
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(Structural Adaptations)
Water-conservation Adaptations
Water-conservation Adaptations
What Are Water-conservation Adaptations?
Water-conservation adaptations are special features that help plants and animals survive in environments where water is scarce. These adaptations reduce water loss and help organisms retain moisture.
Examples of Water-conservation Adaptations
- Thick Cuticles: Many desert plants have thick, waxy cuticles on their leaves to minimize water loss.
- Reduced Leaf Surface Area: Some plants have small or needle-like leaves to reduce the surface area for water loss.
- Stomatal Control: Plants can close their stomata (tiny openings on leaves) during the hottest parts of the day to conserve water.
- Water Storage: Succulents like cacti store water in their thick, fleshy stems or leaves.
- Deep Roots: Some plants have deep root systems to access underground water sources.
Animal Adaptations for Water Conservation
- Concentrated Urine: Animals like camels produce highly concentrated urine to minimize water loss.
- Dry Feces: Some desert animals excrete dry feces to conserve water.
- Nocturnal Lifestyle: Being active at night helps reduce water loss due to lower temperatures.
- Water from Food: Many animals obtain water from the food they eat, reducing the need for drinking water.
Worked Example: Camel Adaptations
Worked Example
Camels are well-known for their ability to survive in arid environments. Let's explore some of their adaptations.
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Remember: Adaptations are specific to the environment. Not all adaptations work in every habitat.
Observe: Look at local plants and animals to identify their unique adaptations.
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