What are evergreen trees and shrubs with Short stiff flattened needle-like leaves and seeds having a red juicy covering called
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Answer:
Evergreen conifers are some of the oldest trees in the world, and for good reason. The needles hold several adaptive qualities that allow them to survive growing in areas that challenge most plants, such as places with heavy snowfall or where soils become very dry. These leaf adaptations make evergreen conifers remarkably resilient in the face of conditions that might kill their deciduous broadleaf cousins. Some of these adaptations serve multiple purposes, like preserving water and protection from the cold.
Needle-type leaves have a number of advantages when it comes to preserving water. Although it may seem counter-intuitive, considering the needle shape doesn't seem conducive to the collection of water on leaf surfaces like broad leaves might accumulate. However, needles have pit-like stomatae -- holes through which trees exchange water and gasses -- that collect water and bring it into the leaf. Furthermore, these needles are covered with a waxy coating, preventing water loss through transpiration.
Because evergreen conifers tend to grow in areas where snow falls, needles have adapted to reduce damage from the accumulation of snow. Because needles are narrow, it's difficult for snow to remain on the leaves, and it falls to the ground. It only accumulates if there is a density of needles. However, the density of leaves also protects the tree. Outer trees in a grove may bear the brunt of snowfall, but inner trees don't accumulate snow as heavily, and temperatures are slightly warmer, reducing the potential for damage caused by cold temperatures.
Needle leaves are very narrow, so they don't have a great deal of surface area to expose to the sun. Since plants generate food through photosynthesis, a process that converts light into energy for the plant, narrow leaves might not seem like a great tool for accomplishing this. However, because needles tend to grow in masses, the actual surface area exposed to the sun is greater than it seems. Also, evergreen needles can photosynthesize in winter, if necessary, and have a greater amount of time over the year in which to gather energy than trees that lose their leaves.
Tree needles are uniquely adapted to harsher environments than deciduous trees. Liquids are pushed through exposed areas of the needles and frozen, leaving the interior cells protected from freezing. The central vein of the leaf is surrounded by a protective sheath so that it can continue to function under harsh conditions. Photosynthetic cells are protected by a waxy coating so they can continue to gather energy for the tree.
Most coniferous trees and shrubs retain their leaves for two to three years before dropping them. They drop them each year, like their deciduous cousins, but they don't drop them all at once. They also grow new leaves every year like deciduous trees, but economize on the energy expended by holding on to leaves for several years instead of having to produce new leaves for the entire tree every year, as deciduous trees do.
Explanation:
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Answer: Coniferous trees and Yew trees are evergreen trees and shrubs with short stiff flattened needle-like leaves and seeds having a red juicy covering fruits.
Explanation:
- Coniferous trees are trees on which leaves have flattened needle-like structures on its surface and these leaves remain on it for the whole winter season.
- These leaves will remain alive until the new growing season of leaves and fruits will come.
- In Coniferous trees, the seeds are converting into fruits.
- Yew Trees are found in the many regions of the United States of America and having different varieties like Iris Yew, Mexican yew, Florida yew.
- Yew trees are also evergreen trees with the needle-like leaves and red fruity seeds.
To Know More:
What are evergreen trees and shrubs with short stiff Latin needle like leaves and seeds having a red juicy covering called
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