How to classify the consumers according on basis of modes of nutrition
Answers
Answer:
Heterotrophs are those organisms which depend totally upon other Autotrophs or Heterotrophs for Nutrition. Heterotrophs are also known as Consumers. The Heterotrophs can't synthesise their own food that's why they are dependant on other organisms to derive their nutrition.
Answer:
Heterotrophic mode of Nutrition→
The word Heterotrophic is also derived from two Greek words - 'Hetero' meaning 'different' and 'trophe' meaning 'nutrition' .
The Heterotrophic Nutrition can be defined as the mode of Nutrition in which energy is obtained by intake of food and digestion of organic substances derived from plants and animals. In this , the organic substances after intake are broken down into simpler substances which are utilized in different metabolic activities
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Heterotrophic Nutrition can be of Three Types→
★ Saprophytic Nutrition
★ Parasitic Nutrition
★ Holozoic Nutrition
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Saprophytic Nutrition→
The worse Saprophytic is derived from two Greek words - 'sapro' meaning rotten and 'phyto' meaning plants.
The Organisms which get their food from supply of dead and decaying organic matter are known as Saprotrophs. Their mode of Nutrition is Saprophytic. The Saprophytes produce digestive enzymes that break down the food into soluble form which is then absorbed.
Examples of Saprotrophs include Bacteria , Fungi , yeast , mushrooms and moulds etc.
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Parasitic Nutrition →
The word Parasitic is derived from Two Greek words - 'para' meaning 'other' and 'site' meaning 'grains'.
Parasite is an organism which lives outside or Inside of the body of an living organism called host and it derives nourishment from the host . The mode of the nutrition by which Parasites get their food is known as Parasitic mode of Nutrition.
Examples of Parasites include Protozoans such as plasmodium , Trypanosoma , Leishmania, and worms like round worms , filarial worms. etc, Fungi like Puccinia and parasites on weak plants.
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Holozoic Nutrition→
The word Holozoic is derived from two Greek words - 'holos' meaning whole and 'zoic' meaning animal.
Holozoic mode of Nutrition can be defined as the feeding of complex organic matter by ingestion , which is digested and then absorbed .
It's Examples include organisms like , Amoeba , Paramecium , frogs and Human Beings , etc.
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On the Basis of Food Habits , Holozoic Organisms are further divided into three types →
★ Herbivores
★Carnivores
★Omnivores
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Herbivores→
The word Herbivores is derived from two Greek words - 'herba' meaning 'herbs' and 'vorate' meaning ' to eat '.
Those animals who feed only on plants and plant products are called as Herbivores.
Examples→ Goat , Buffalo, Cow , Elephant and sheep etc all are Herbivores.
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Carnivores→
The word Carnivores is derived from two words - 'carni' meaning 'flesh' and 'vorate' meaning ' to eat ' .
The animals which feed on flesh of other animals are included in this category.
Examples → Lion , Tiger , Leopard etc. are all Examples of Carnivores.
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Omnivores →
The word omnivores is derived from two Greek words - 'omnis' meaning 'all' and 'vorate' meaning ' to eat '
Those animals which which feed on both plants and flesh of animals are known as Omnivores.
Examples → Man , Domestic cat , Pig , Crow, cockroach , etc are examples of Omnivores.
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