Consider the following statements about nutrients: 1. Carbohydrates, proteins, fats, vitamins, and minerals are components of food. 2. These components are collectively known as roughage. 3. Only animals require these nutrients, while plants do not. Which of the statements given above is/are correct?

The correct option is (a). Explanation Nutrients are chemical substances found in food that are essential for the growth, maintenance, and repair of the body. They are broadly classified into macronutrients (carbohydrates, proteins, fats) and micronutrients (vitamins, minerals). - Statement 1 is Correct: Carbohydrates, proteins, fats, vitamins, and minerals are the fundamental components of food necessary for sustaining life. These components are collectively termed nutrients. - Statement 2 is Incorrect: These components are collectively known as nutrients, not roughage. Roughage (or dietary fiber) is a distinct component of food derived mainly from plants (e.g., cellulose). While essential for digestion and preventing constipation, roughage does not provide nutrients to the body. - Statement 3 is Incorrect: All living organisms, including plants, require nutrients for survival. While plants are autotrophs (synthesizing their own food via photosynthesis), they require essential mineral nutrients (such as Nitrogen, Phosphorus, and Potassium) absorbed from the soil and water to perform metabolic functions. Key Takeaway: Nutrients include carbohydrates, proteins, fats, vitamins, and minerals. Roughage is dietary fiber, distinct from nutrients. Both plants and animals require nutrients for survival.

Consider the following statements about nutrients: 1.… - NCERT Class 7 Science MCQ

NCERT Class 7 Science — Chapter 1: Nutrition in plants

mcqeasy

Consider the following statements about nutrients:

Carbohydrates, proteins, fats, vitamins, and minerals are components of food.
These components are collectively known as roughage.
Only animals require these nutrients, while plants do not.

Which of the statements given above is/are correct?

NCERT textbook question

From NCERT Science - class 7 · Page 1

Options

A1 only
B2 only
C1 and 3 only
D1, 2 and 3

Did you get this right?

Solution

The correct option is (a).

Explanation

Nutrients are chemical substances found in food that are essential for the growth, maintenance, and repair of the body. They are broadly classified into macronutrients (carbohydrates, proteins, fats) and micronutrients (vitamins, minerals).

Statement 1 is Correct: Carbohydrates, proteins, fats, vitamins, and minerals are the fundamental components of food necessary for sustaining life. These components are collectively termed nutrients.
Statement 2 is Incorrect: These components are collectively known as nutrients, not roughage. Roughage (or dietary fiber) is a distinct component of food derived mainly from plants (e.g., cellulose). While essential for digestion and preventing constipation, roughage does not provide nutrients to the body.
Statement 3 is Incorrect: All living organisms, including plants, require nutrients for survival. While plants are autotrophs (synthesizing their own food via photosynthesis), they require essential mineral nutrients (such as Nitrogen, Phosphorus, and Potassium) absorbed from the soil and water to perform metabolic functions.

Key Takeaway: Nutrients include carbohydrates, proteins, fats, vitamins, and minerals. Roughage is dietary fiber, distinct from nutrients. Both plants and animals require nutrients for survival.

Your note

More from Chapter 1: Nutrition in plants

Consider the following statements regarding the relationship between legumes and Rhizobium: 1. It is an example of a symbiotic relationship. 2. The bacteria provide food and shelter to the plant. 3. The plant provides nitrogen to the bacteria. Which of the statements given above is/are correct?

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With reference to saprotrophic nutrition, consider the following statements: 1. It is a mode of nutrition where organisms take in nutrients from dead and decaying matter. 2. Fungi ingest dead matter directly without secreting digestive juices. 3. All fungi are harmful and cause spoilage of food and diseases. Which of the statements given above is/are correct?

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Consider the following statements about the transport system in plants: 1. Roots absorb water and minerals from the soil. 2. The transport vessels are restricted to the roots and do not reach the stem. 3. The vessels form a continuous network reaching the leaves. Which of the statements given above is/are correct?

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Which one of the following crops is a legume capable of symbiotic nitrogen fixation via Rhizobium?

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Consider the following statements about the digestive process in saprotrophs: 1. They digest food externally before ingestion. 2. They secrete digestive juices inside their bodies. 3. They absorb nutrients in solution form. Which of the statements given above is/are correct?

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