SS1: BIOLOGY - 1ST TERM
Introduction to Biology | Week 16 Topics|1 Quiz
Recognizing Living Things | Week 23 Topics|1 Quiz
Organisation of Life | Week 33 Topics
Classification of Living Organisms | Week 47 Topics|1 Quiz
Kingdom Prokaryotae / Monera & Kingdom Protista | Week 53 Topics|3 Quizzes
Kingdom Fungi & Kingdom Plantae | Week 69 Topics|2 Quizzes
Kingdom Animalia I | Week 76 Topics|1 Quiz
Kingdom Animalia II | Week 85 Topics|1 Quiz
The Cell | Week 93 Topics|1 Quiz
The Cell Structure and Functions | Week 104 Topics|1 Quiz
The Cell and its Environment | Week 114 Topics|1 Quiz
Nutrition in Plants | Week 124 Topics|1 Quiz
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The ability of living organisms to feed is known as nutrition. It is the process by which living things obtain and assimilate (utilize) nutrients. Living things require nutrients for various purposes; growth, repair of worn-out tissues, and provision of energy.
Plants manufacture their own food using light energy, carbon (IV) oxide, water, and mineral salts through the process of photosynthesis. Conversely, animals feed on already manufactured foods from plants and other animals.
Types of Nutrition:
There are two major types of modes of nutrition in plants. They are
1. Autotrophic Nutrition.
2. Heterotrophic Nutrition.
Organisms which are able to manufacture their own food are known as autotrophs. In this kind of nutrition, organisms make their own food from simple inorganic substances.
There are two types of autotrophic nutrition
(i) Photosynthetic Nutrition.
(ii) Chemosynthetic Nutrition.
Organisms that cannot manufacture food but depend on plants either directly or indirectly are heterotrophs and the mode of nutrition is heterotrophic.
Most animals, fungi and certain bacteria are heterotrophs.
Types of heterotrophic nutrition include: parasitic, saprophytic, symbiotic etc.
Nutrition in Plants:
Nutrition is the process by which an organism obtains food materials and prepares them for its use. Food is needed for growth, replacement, repair, and respiration.
Green plants differ from other organisms such as fungi, most bacteria, and animals in the way they make their food from simple inorganic materials.
They take in carbon (IV) oxide, water, and minerals salts and build this into the organic compounds they need; mainly carbohydrates, proteins, and oils.
This basic synthesis in plants is called photosynthesis.