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Question

Identify the INCORRECT sentence(s). a. Some organisms use simple food material obtained from inorganic sources in the form of carbon dioxide and water. 0. Other organisms utilise complex substances which are broken down into simpler ones before they can be used for the upkeep and growth of the body. c. Heterotrophic organisms include plants.

This question was previously asked in
RRB NTPC 2024 Undergraduate CBT 1 Question Paper (29-Aug-2025) (Shift 1)
The correct answer is

Only c

The task is to identify the incorrect sentence(s) related to organisms and their nutritional modes. We have three statements to evaluate:

  1. Some organisms use simple food material obtained from inorganic sources in the form of carbon dioxide and water.

  2. Other organisms utilise complex substances which are broken down into simpler ones before they can be used for the upkeep and growth of the body.

  3. Heterotrophic organisms include plants.

Let's assess each statement:

  1. This statement is correct. It describes autotrophic nutrition, a process used by plants, algae, and some bacteria to synthesize food from inorganic substances like carbon dioxide and water.

  2. This statement is correct. It refers to heterotrophic nutrition, where organisms consume complex organic substances and break them down to simpler forms to gain nourishment.

  3. This statement is incorrect. Heterotrophic organisms do not include plants; rather, they include animals, fungi, and some bacteria that depend on other organisms for food.

Therefore, the incorrect sentence is identified as being "Only c".

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