The leaves of ‘cactus’ are reduced to ‘spines’ to prevent the loss of water by transpiration. EXPLANATION: Leaves lose water by the process of transpiration but cactus grows in deserts and cannot afford to lose water. The spines of the cactus store water.
Why does cactus plants have long roots?
cactus plant have long root because it in able to absorb moisture from the desert .
Why the leaves are reduced to thorns in cactus?
Leaves are reduced to spines in cactus plant as they prevent water loss due to transpiration.
Why are leaves reduced to spines in desert plant?
Leaves of desert plants are reduced to spines to prevent transpiration.
Do cactus roots go deep?
You might think cacti would grow deep roots to search for a constant supply of groundwater. Instead, they often develop extensive, shallow root systems that sit just under the surface of the Earth and can extend several feet away from the plant, ready to absorb as much water as possible.
How do you tell if a cactus is rooted?
Test for roots four weeks after potting the cactus cutting. Wear gardening gloves or use tongs to grasp the base of the cutting. Lift it gently and feel for resistance to the movement, which means that roots have formed.
In which plant leaves reduced to spines?
Answer: Leaves are reduced to spines in a cactus because due to heat the water present in cactus would dry up if it had leaves.
What advantages does a plant have if leaves are reduced to spines?
EXPLANATION: Leaves lose water by the process of transpiration but cactus grows in deserts and cannot afford to lose water. The spines of the cactus store water. They reduce air flow around cactus and help the plant to get enough water by storing it.
What is the advantage of leaves reduced to spines in some Xerophytes?
Spines lose less water than leaves so are very efficient in a hot climate. Spines also prevent animals from eating the plant. Waxy skin – some leaves have a thick, waxy skin on their surface. This reduces water loss by transpiration .
How does the presence of spines instead of leaves in desert plants useful?
Desert plants lose very little water through transpiration. The leaves in desert plants are either absent, very small, or they are present in the shape of spines. This helps in reducing loss of water from the leaves through transpiration.
How does the rate of loss of water get reduced in desert plants?
In desert plants, rate of water loss gets reduced due to the presence of (a) cuticle (b) stomata (c) lignin (d) suberin. Answer: … It minimizes the water loss through transpiration (with the help of stomata) and also reduces pathogen entry.
How long can a cactus live for?
In the wild cacti can live for hundreds of years. Indoors they may survive for 10 years or more.