Life Processes Class 10 MCQ with Answers. We covered all the Life Processes Class 10 MCQ with Answers in this post for free so that you can practice well for the exam.
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MCQ on Life Processes for Class 10th Students
The co-enzyme which acts as a hydrogen acceptor during the light reaction is ………
(A) PQ
(B) FAD
(C) COQ
(D) NADP
Option d – NADP
Arrange the following process of the nitrogen cycle in proper sequences. (i) Denitrification (ii) Nitrogen fixation (iii) Ammonification (iv) Nitrification
(A) ii – iv – iii – i
(B) ii – iii – iv – i
(C) i – iii – ii – iv
(D) iv – iii – ii – i
Option b – ii – iii – iv – i
Identify the steps that utilize ATP, in glycolysis. i. Glucose →→ Glucose-6-phosphate ii. Glucose-6-phosphate → Glucose iii. Fructose-6-phosphate → Fructose 1,6-bisphosphate iv. Fructose-1, 6-phosphate → Fructose-6-phosphate
(A) i and ii
(B) ii and iii
(C) i and iii
(D) iii and iv
Option c – i and iii
Read the following statements and select the correct option. Statement I: GA1 is widely used in the brewing industry to speed up the malting process. Statement II: The ripening of fruits can be delayed with the help of gibberellins.
(A) Both statements I and II are correct.
(B) Both statements I and II are incorrect
(C) Statement I is correct and statement II is incorrect
(D) Statement I is incorrect and statement II is correct
Option d – Statement I is incorrect and statement II is correct
The chief advantage of encystment to an Amoeba is
(A) the chance to get rid of accumulated waste products
(B) the ability to survive during adverse physical conditions
(C) the ability to live for some time without ingesting food
(D) protection from parasites and predators
Option b – the ability to survive during adverse physical conditions
Despite the high level of heterozygosity, the progeny derived from the seed of a cross-pollinated plant was found to be completely uniform. One reason for this may be the phenomenon of
(A) parthenocarpy
(B) apomixis
(C) induced mutation
(D) polyploidy
Option b – apomixis
Which of the following is the INCORRECT statement?
(A) Movement of minerals in the xylem is unidirectional
(B) Unloading of sucrose at the sink does not involve the utilization of ATP
(C) Elements most easily mobilized in plants from one region to another are: phosphorus, sulphur, nitrogen, and potassium
(D) Transport of molecules in phloem can be bidirectional
Option b – Unloading of sucrose at the sink does not involve the utilization of ATP
Identify the INCORRECT statement from the following.
(A) Other than blue and red regions, some photosynthesis does take place at other wavelengths of the visible spectrum.
(B) Chlorophyll-a protects other pigments from photo-oxidation.
(C) Chlorophyll-a is the chief pigment associated with photosynthesis.
(D) The absorption spectrum of chlorophyll-a is minimum at wavelengths between 500 nm to 600 nm.
Option b – Chlorophyll-a protects other pigments from photo-oxidation.
Which one of the following pairs is WRONGLY matched?
(A) Yeast – Ethanol
(B) Streptomyces – Antibiotic
(C) Clostridium – Vinegar
(D) Methanogens – Gobar gas
Option c – Clostridium – Vinegar
Satellite DNA is important because it
(A) codes for enzymes needed for DNA replication.
(B) codes for proteins needed in the cell cycle.
(C) shows a high degree of polymorphism in the population and also the same degree of polymorphism in an individual, which is heritable from parents to children.
(D) does not code for proteins and is the same in all members of the population.
Option c – shows a high degree of polymorphism in the population and also the same degree of polymorphism in an individual, which is heritable from parents to children.
Which of the following is the CORRECT statement?
(A) In Ulothrix, gametes are non-flagellated and dissimilar in size.
(B) Half of the total CO₂ fixation on earth is carried out by algae through photosynthesis.
(C) In Phaeophyceae, the brown color of algae is mainly due to pigment r-phycoerythrin.
(D) Chlamydomonas is a multicellular alga that is used as a food supplement.
Option b – Half of the total CO₂ fixation on earth is carried out by algae through photosynthesis.
Pneumatophores are found in
(A) submerged hydrophytes
(B) free-floating hydrophytes
(C) halophytes
(D) carnivorous plants
Option c – halophytes
The coconut water and the edible part of the coconut are equivalent to
(A) endosperm
(B) endocarp
(C) mesocarp
(D) embryo
Option a – endosperm
From the following identify the CORRECT statement.
(A) The seed in grasses is not endospermic.
(B) Mango is a parthenocarpic fruit.
(C) A proteinaceous aleurone layer is present in maize grain.
(D) A sterile pistil is called a staminode.
Option c – A proteinaceous aleurone layer is present in maize grain.
You are given a fairly old piece of dicot stem and a dicot root. Which of the following anatomical structures will you use to distinguish between the two?
(A) Secondary xylem
(B) Secondary phloem
(C) Protoxylem
(D) Cortical cells
Option c – Protoxylem
Which of the following is the WRONG statement?
(A) Mycoplasma is a wall-less microorganism.
(B) The bacterial cell wall is made up of peptidoglycan.
(C) Pili and fimbriae are mainly involved in the motility of bacterial cells.
(D) Cyanobacteria lack flagellated cells.
Option c – Pili and fimbriae are mainly involved in the motility of bacterial cells.
Which of the following is the correct sequence of phases in a mitotic cycle?
(A) G₁, S, G₂, M
(B) M, G₁, G₂, S.
(C) G₁, G₂, S, M
(D) S, G₁, G₂, M
Option a – G₁, S, G₂, M
From the following which one gives the most valid and recent explanation for stomatal movement?
(A) Starch hydrolysis
(B) Guard cell photosynthesis
(C) Transpiration
(D) Potassium influx and efflux
Option d – Potassium influx and efflux
Identify the MISMATCHED pair.
(A) Potato – Solanum tuberosum
(B) Wheat – Triticum aestivum
(C) Mango – Musca domestica
(D) Lion – Panthera leo
Option c – Mango – Musca domestica
Which of the following is the CORRECT sequence of taxonomic hierarchy?
(A) Genus – Family → Class → Order – Phylum → Kingdom →Species
(B) Species → Genus → Family → Order → Class Phylum → Kingdom
(C) Species – Family →Genus →Kingdom →Order → Class – Phylum
(D) Species →Genus → Family – Class – Order → Phylum → Kingdom
Option b – Species → Genus → Family → Order → Class Phylum → Kingdom
Study the following statements and select the correct option. Statement I: Gonyaulax releases toxins that may result in the death of many marine animals such as fish. Statement II: Gonyaulax multiplies rapidly and exhibits red tides.
(A) Statement I is correct while Statement II is incorrect.
(B) Statement I is incorrect while Statement II is correct.
(C) Both statements are correct.
(D) Both statements are incorrect.
Option c – Both statements are correct.
From the following identify the CORRECT statement.
(A) Lichens are not good pollution indicators.
(B) Lichens do not grow in polluted areas.
(C) The algal component of lichens is called mycobiont.
(D) The fungal component of lichens is called phycobiont.
Option b – Lichens do not grow in polluted areas.
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