All green plants and bacteria which can synthesize their food by photosynthesis come under the category of?

RRB Nsg. Superintendent 21 July 2019 (shift 1st)

Applied Nutrition & Dietetics

Easy

Appeared in: RRB Nsg. Superintendent 21 July 2019 (shift 1st)

Explanation

Organisms that create their own food from inorganic sources are called producers or autotrophs.
Green plants and photosynthetic bacteria (like cyanobacteria) use sunlight, water, and carbon dioxide to create energy-rich organic compounds (food) through photosynthesis.
This ability places them at the first trophic level, forming the base of nearly all food chains on Earth.
They are the ultimate source of energy for all other organisms in the ecosystem, which are known as consumers.

Option A: Decomposers obtain nutrients by breaking down dead organic matter and waste products; they do not synthesize their own food.
Option B: 'Intakers' is not a standard scientific term used in ecology to classify organisms based on their method of obtaining energy.
Option C: While it is descriptively true that producers 'give' food to the ecosystem, 'Food givers' is not the accepted scientific terminology.

Visual 1: Diagram - A food web diagram showing plants (producers) at the bottom, being eaten by herbivores (primary consumers), which are then eaten by carnivores (secondary/tertiary consumers). This visually demonstrates the foundational role of producers.
Visual 2: Infographic - An illustration of the process of photosynthesis, showing how plants use sunlight, water, and carbon dioxide to create glucose (energy) and oxygen.

Clinical Relevance

Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Ecological Roles and Trophic Levels as background academic context rather than a clinical decision trigger.
Understanding ecological roles is fundamental to biology and environmental science, which form a part of the foundational knowledge for health professionals, especially in community health.
The concept of producers is key to understanding energy flow in ecosystems and the importance of a balanced environment for human health.
What if the question mentioned organisms that get energy from chemical reactions in deep-sea vents instead of light? These are called 'chemoautotrophs' and are also producers, demonstrating that not all life depends directly on sunlight (SRC_4).

How to Approach the Question

First, identify the key processes and organisms in the question: 'green plants', 'bacteria', 'synthesize their food', and 'photosynthesis'.
Recall the basic ecological roles: Producers, Consumers, and Decomposers.
Match the process of 'synthesizing food' via 'photosynthesis' to the correct ecological term.
Producers (or autotrophs) are defined as organisms that create their own food. This directly matches the question's description.
Evaluate the other options. 'Decomposers' have a different role (breaking down dead matter). 'Intakers' and 'Food givers' are not standard scientific terms.

Concept Tested & Keywords

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