Respiration MCQs for NEET — Botany Questions with Answers

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For the substrate Glucose, how many Oxygen are used and how many Carbon-dioxide are evolved?

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Explanation

Page number-237

14.7 Respiratory Quotient

Respiration In Plants

How many Carbon-dioxide are evolved in respiration of two molecules of Tripalmitin?

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Explanation

Page number-237

14.7 Respiratory Quotient

Respiration In Plants

How many Oxygen are used in the respiration of  two molecules of Tripalmitin?

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Explanation

Page number-237

14.7 Respiratory Quotient

Respiration In Plants

RQ is 0.7; it can be

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Explanation

Page number-237

14.7 Respiratory Quotient

Respiration In Plants

The RQ of a substrate is found to be 0.9 what would be that substrate?

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Explanation

Page number-237

14.7 Respiratory Quotient

Respiration In Plants

Which of the following is not correct?

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Explanation

Page number-237-238

14.7 Respiratory Quotient

and summary

Respiration In Plants

Refrigerated fruits maintain flavour and taste for longer period due to:-

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Explanation

Refrigerated fruits maintain flavour and taste for longer period due to the slower rate of respirations. In low temperature. the respiration rate of fruits is minimised.

Which of the following statements correctly distinguishes gaseous exchange in plants from animals?

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Explanation

According to the NCERT text, 'Plants, unlike animals, have no specialised organs for gaseous exchange but they have stomata and lenticels for this purpose.' Animals, on the other hand, typically possess specialized respiratory organs.

Why do plants not require extensive transport of gases from one part to another, unlike larger animals?

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Explanation

The NCERT states, 'First, each plant part takes care of its own gas-exchange needs. There is very little transport of gases from one plant part to another.' This localized gas exchange minimizes the requirement for extensive transport systems.

Which of the following is NOT a reason why plants can manage without specialized respiratory organs?

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Explanation

The NCERT states that 'Only during photosynthesis are large volumes of gases exchanged and, each leaf is well adapted to take care of its own needs during these periods. When cells photosynthesise, availability of O2 is not a problem in these cells since O2 is released within the cell.' However, not all cells, tissues, and organs photosynthesise, meaning that other parts still require oxygen which is not internally produced.

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