NCERT Class 11 Science — Chapter 1: Photosynthesis in Higher Plants

Assertion (A): In aquatic plants, bubbles of oxygen are formed around the green parts during active photosynthesis. Reason (R): Photosynthesis requires light energy to split water molecules, releasing oxygen.

The 'Law of Limiting Factors' regarding the rate of photosynthesis was proposed by:

The Calvin cycle of photosynthesis operates in which part of the chloroplast?

In the light reaction of photosynthesis, which of the following acts as the final electron acceptor?

Consider the following statements about autotrophic nutrition: 1. It is characteristic of green plants and some bacteria. 2. It involves conversion of chemical energy into light energy. 3. Heterotrophs ultimately depend on it. Which of the statements given above are correct?

Which photosynthetic pigment is characteristically blue-green in a chromatogram?

With reference to the role of photosynthesis in the biosphere, consider the following statements: 1. It is responsible for releasing carbon dioxide into the atmosphere. 2. It is the primary source of food for all living forms. 3. It is the only pathway of ATP generation in plants. Which of the statements given above is/are correct?

Assertion (A): The biosynthetic phase of photosynthesis is often referred to as the dark reaction. Reason (R): This phase takes place in the stroma of the chloroplasts where enzymatic activity is high.

With reference to Julius von Sachs’ contributions, consider the following statements: 1. Photosynthetic products are stored primarily as proteins. 2. Chlorophyll is confined to distinct cellular bodies. 3. Non-green parts are not involved in carbohydrate synthesis. Which of the statements given above is/are correct?

Which molecule acts as the primary CO2 acceptor in the Calvin cycle of higher plants?

Consider the following statements about oxygen evolution in photosynthesis: 1. It is always replaced by sulphur production in all autotrophs. 2. It arises from the oxidation of water. 3. It is derived from carbon dioxide in higher plants. Which of the statements given above is/are correct?

The electron transport system in mitochondria and chloroplasts primarily consists of a series of:

In Jan Ingenhousz's experiments with aquatic plants, the bubbles released in the presence of sunlight were identified as:

Which pigment acts as the universal photosynthetic pigment in the plant kingdom?

During photosynthesis, the oxygen released into the atmosphere is derived from which of the following?

During the light-dependent reactions of photosynthesis, a proton gradient is established by the accumulation of protons in the:

A distinct physiological advantage of C4 plants over C3 plants is that photorespiration is:

Who provided evidence that glucose is produced in green parts of plants and stored as starch?

Which enzyme is considered the most abundant protein in the biosphere?

For the synthesis of one molecule of glucose via the Calvin cycle, which one of the following represents the correct requirement?

Which of the following pigment sets shows absorption peaks that most effectively drive photosynthesis in higher plants?

Which one of the following is the chief pigment associated with the reaction centre in photosynthesis in higher plants?