Answer
Verified
369k+ views
Hint: The ways plants avoid being eaten are called plant defence mechanisms. They have numerous ways in order to protect themselves from predators. Since herbivores are the main consumers of plants, plants have special defence mechanisms against them.
Complete answer:
There are numerous ways of plant defence mechanism which are listed as below-
Mechanical defence mechanism- Plants naturally have waxy cuticles and hard barks which offer resistance to many attackers. This is also called the first line of defence as these are generally present on the surface which is initially approached by the herbivores. Some plants have modified their branches into thorns and some have modified their leaves into spines. For example, cactus has spines (modified leaves) to protect against predators.
Chemical defence mechanism- Secondary metabolites are compounds which are not directly involved in plant growth, development or photosynthesis but are involved in plant defence mechanisms. Some metabolites such as alkaloids (e.g. caffeine) or opioids and glycol cyanide have deadly effects on animals. The chemicals are generally volatile organic compounds.
Note: In addition to the chemical and mechanical defences which are used to keep attackers at a distance, there are other mechanisms too to avoid being eaten away by intruders. For e.g. a very well-known plant, touch-me-not when touched droops down giving it an impression of dead and inactive plant which is not approached by animals further.
Nature has its own way of dealing with the atrocities of nature whether plants or animals or any other species.
Complete answer:
There are numerous ways of plant defence mechanism which are listed as below-
Mechanical defence mechanism- Plants naturally have waxy cuticles and hard barks which offer resistance to many attackers. This is also called the first line of defence as these are generally present on the surface which is initially approached by the herbivores. Some plants have modified their branches into thorns and some have modified their leaves into spines. For example, cactus has spines (modified leaves) to protect against predators.
Chemical defence mechanism- Secondary metabolites are compounds which are not directly involved in plant growth, development or photosynthesis but are involved in plant defence mechanisms. Some metabolites such as alkaloids (e.g. caffeine) or opioids and glycol cyanide have deadly effects on animals. The chemicals are generally volatile organic compounds.
Note: In addition to the chemical and mechanical defences which are used to keep attackers at a distance, there are other mechanisms too to avoid being eaten away by intruders. For e.g. a very well-known plant, touch-me-not when touched droops down giving it an impression of dead and inactive plant which is not approached by animals further.
Nature has its own way of dealing with the atrocities of nature whether plants or animals or any other species.
Recently Updated Pages
Three beakers labelled as A B and C each containing 25 mL of water were taken A small amount of NaOH anhydrous CuSO4 and NaCl were added to the beakers A B and C respectively It was observed that there was an increase in the temperature of the solutions contained in beakers A and B whereas in case of beaker C the temperature of the solution falls Which one of the following statements isarecorrect i In beakers A and B exothermic process has occurred ii In beakers A and B endothermic process has occurred iii In beaker C exothermic process has occurred iv In beaker C endothermic process has occurred
The branch of science which deals with nature and natural class 10 physics CBSE
The Equation xxx + 2 is Satisfied when x is Equal to Class 10 Maths
Define absolute refractive index of a medium
Which of the following would not be a valid reason class 11 biology CBSE
What are the measures one has to take to prevent contracting class 12 biology CBSE
Trending doubts
Difference Between Plant Cell and Animal Cell
Difference between Prokaryotic cell and Eukaryotic class 11 biology CBSE
Fill the blanks with the suitable prepositions 1 The class 9 english CBSE
Change the following sentences into negative and interrogative class 10 english CBSE
Summary of the poem Where the Mind is Without Fear class 8 english CBSE
Give 10 examples for herbs , shrubs , climbers , creepers
Write an application to the principal requesting five class 10 english CBSE
What organs are located on the left side of your body class 11 biology CBSE
What is the z value for a 90 95 and 99 percent confidence class 11 maths CBSE