Download PDF – Respiration in plants – (Class 11th Biology) Revision Test | MCQs for NEET

Respiration in plants – (Class 11th Biology) Revision Test | MCQs for NEET

Q1. R.Q is ratio of

A) CO2 produced to substarate consumed

B) CO2 produced to O2 consumed

C) oxygen consumed to CO2 produced

D) oxygen consumed to water produced

Answer: (B)

CO2 produced to O2 consumed

Q2. Angiosperm pollen is generally released at the

A) 1 – celled stage

B) 2 – celled stage

C) 3 – celled stage

D) male gamete formation stage

Answer: (B)

Q3. The complete oxidation of pyruvate take place in

A) cell cytoplasm

B) inner mitochondrial membrane

C) mitochondrial matrix

D) nucleus

Answer: (C)

Pyruvate is transported from cytoplasm into the mitochondria. The complete oxidation of pyruvate takes place in matrix of mitochondria

Q4. Which enzyme catalyses the reaction below? Pyruvic acid → Carbon dioxide + Ethanol

A) Pyruvic acid decarboxylase

B) Alcohol dehydrogenase

C) None of these

D) Both of these

Answer: (D)

In fermentation, the incomplete oxidation of glucose is achieved under anaerobic conditions by sets of reactions in which pyruvic acid is converted to carbon dioxide and ethanol.

Q5. TCA cycle was discovered by

A) Otto Meyerhof

B) Hans Kreb

C) Gustav Embden

D) All of these

Answer: (B)

TCA cycle or tricarboxylic acid cycle was given by Hans Kreb. So it is also called as Kreb cycle.

Q6. Which one of the following describes the spikelet of a cereal or grass plant

A) inferior ovary

B) dehiscent fruit

C) pair of glumes

D) fused calyx

Answer: (C)

pair of glumes

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