These questions consist of two statements each printed as assertion an...
Answer:
To understand the given assertion and reason, let's break it down into smaller parts and analyze each statement separately.
Assertion: Waxy and earth coating on plant parts reduce transpiration.
Reason: These adaptations are found in xerophytes.
Explanation:
1. Waxy and Earth Coating on Plant Parts Reduce Transpiration:
Transpiration is the process by which water is lost from the surface of plant leaves through small openings called stomata. The waxy and earth coating on plant parts, such as leaves and stems, can act as a barrier to reduce water loss through transpiration. The waxy layer is called the cuticle, and it prevents the evaporation of water from the plant's surface. The earth coating, also known as the epidermal hairs, can trap a layer of air close to the surface, which reduces the rate of transpiration. Therefore, the assertion that waxy and earth coating on plant parts reduce transpiration is true.
2. These Adaptations are Found in Xerophytes:
Xerophytes are plants that are adapted to survive in arid or dry environments. These plants have evolved various adaptations to reduce water loss and conserve water. One of these adaptations is the presence of waxy and earth coating on their plant parts. The waxy cuticle and epidermal hairs help to reduce transpiration by creating a physical barrier and trapping a layer of air, respectively. Therefore, the reason that these adaptations are found in xerophytes is also true.
Conclusion:
Both the assertion and the reason are true. Additionally, the reason provides a correct explanation for the assertion. The presence of waxy and earth coating on plant parts is an adaptation found in xerophytes to reduce transpiration and conserve water in dry environments. Therefore, the correct answer is option 'A'.
These questions consist of two statements each printed as assertion an...
Xerophytes are plants which live in areas where availability of water is greatly reduced.
So in order to avoid high rates of transpiration through which most of the water is lost, they possess waxy coating on their leaves.
Therefore both the assertion and reason is correct and the reason provides the right explaination.