FORESTRY
PLANT AND WOOD ANATOMY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Leaves and stems
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Roots and leaves
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Seeds and spores
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Thorns and poisons
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Detailed explanation-1: -Constitutive Defense: In this type of defence, plants have power in themselves only. It is attached to plants and used whenever they are in danger. Most plants use these techniques to protect themselves. For example, when the plants have thorns or chemical poisons thus preventing the animals from eating them.
Detailed explanation-2: -Although it has been shown that in some plant families, such as cacti, spines arose primarily as a mechanism to reduce water loss from leaves, most plants that have spines use them to protect themselves from hungry animals.
Detailed explanation-3: -Plants have developed several defenses against herbivores [1]. Some plant defenses are easy to see, like the thorns of a rose, the hairs on the leaf of a stinging nettle, or the thick skin of beetroots. Other defenses, such as chemical defenses, are less visible.