With reference to the role of the sun in nutrition, consider the following statements: 1. Solar energy is primarily captured by the roots of the plant. 2. Solar energy is stored in the plant in the form of food. 3. Photosynthesis converts solar energy into chemical energy. Which of the statements given above is/are correct?

The correct option is (c) 2 and 3 only. Explanation Photosynthesis is the fundamental biological process by which autotrophs convert light energy into chemical energy. This process enables plants to synthesize organic food from inorganic raw materials like carbon dioxide and water. Statement-wise Analysis - Statement 1 is Incorrect. Solar energy is captured by chlorophyll, a green pigment located within chloroplasts. Chloroplasts are predominantly found in the leaves and green stems of the plant. Roots are subterranean structures primarily responsible for anchoring the plant and absorbing water and minerals from the soil, not for capturing solar energy. - Statement 2 is Correct. The solar energy trapped by the plant is used to synthesize carbohydrates (glucose). This energy is stored within the plant biomass in the form of food (specifically starch in plants) to provide energy for metabolic activities. - Statement 3 is Correct. The core mechanism of photosynthesis involves the transduction of energy. Light energy (solar energy) is absorbed by chlorophyll and converted into chemical energy. This chemical energy drives the splitting of water molecules and the reduction of carbon dioxide into carbohydrates. Key Takeaway Photosynthesis occurs in the green parts of the plant (mainly leaves) where solar energy is converted into chemical energy and stored as starch. Roots function in water and mineral absorption, lacking the pigments necessary for solar energy capture.

With reference to the role of the sun in… - NCERT Class 7 Science MCQ

NCERT Class 7 Science — Chapter 1: Nutrition in plants

mcqmedium

With reference to the role of the sun in nutrition, consider the following statements:

Solar energy is primarily captured by the roots of the plant.
Solar energy is stored in the plant in the form of food.
Photosynthesis converts solar energy into chemical energy.

Which of the statements given above is/are correct?

NCERT textbook question

From NCERT Science - class 7 · Page 2

Options

A1 and 2 only
B2 only
C2 and 3 only
D1, 2 and 3

Did you get this right?

Solution

The correct option is (c) 2 and 3 only.

Explanation

Photosynthesis is the fundamental biological process by which autotrophs convert light energy into chemical energy. This process enables plants to synthesize organic food from inorganic raw materials like carbon dioxide and water.

Statement-wise Analysis

Statement 1 is Incorrect. Solar energy is captured by chlorophyll, a green pigment located within chloroplasts. Chloroplasts are predominantly found in the leaves and green stems of the plant. Roots are subterranean structures primarily responsible for anchoring the plant and absorbing water and minerals from the soil, not for capturing solar energy.
Statement 2 is Correct. The solar energy trapped by the plant is used to synthesize carbohydrates (glucose). This energy is stored within the plant biomass in the form of food (specifically starch in plants) to provide energy for metabolic activities.
Statement 3 is Correct. The core mechanism of photosynthesis involves the transduction of energy. Light energy (solar energy) is absorbed by chlorophyll and converted into chemical energy. This chemical energy drives the splitting of water molecules and the reduction of carbon dioxide into carbohydrates.

Key Takeaway

Photosynthesis occurs in the green parts of the plant (mainly leaves) where solar energy is converted into chemical energy and stored as starch. Roots function in water and mineral absorption, lacking the pigments necessary for solar energy capture.

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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