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Herbivores are the predators of plants.write …

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Herbivores are the predators of plants.write any 3 defence mechanism of plants against herbivory

Posted by Lakshmi Deva 5 years, 2 months ago

CBSE > Class 12 > Biology

3 answers

Brahmjot Kaur 5 years, 2 months ago

Plants have evolved various defences against herbivores such as :- 1. Thorns of Acacia and cactus are the most common morphological means of defence. 2. Some plants produce highly poisonous chemicals like cardiac glycosides, eg. weed Calatropis that makes the herbivore sick, etc. 3. Chemicals like nicotine, caffeine, quinine, strychnine, opium, etc., are actually defence mechanisms against grazers and browsers.

Lakshmi Deva 5 years, 2 months ago

1.2 sharp thorns in acacia to deter herbivores. 1.3 In some plants,the margins if their leaves are spiny or have sharp edges that prevents herbivores. (2) chemical defence 2.1 chemical substances such as nicotine, caffeine, quinine,and opium are produced in plants as a defence. 2.2 All parts of calotropis weeds contain toxic cardiac glycosides,which can prove to be fatal if ingested by herbivores.

Lakshmi Deva 5 years, 2 months ago

(1) Morphological defence mechanism: 1.1 cactus leaves are modified into sharp spines to deter herbivores from feeding on them

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