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Class 11 - Biology Mock Tests

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Class 11
Biology Mock Test 1

Questions:: 30
Duration:: 30 minutes
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Class 11
Biology Mock Test 2

Questions:: 30
Duration:: 30 minutes
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Class 11
Biology Mock Test 3

Questions:: 30
Duration:: 30 minutes
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Class 11
Biology Mock Test 4

Questions:: 30
Duration:: 30 minutes
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Class 11
Biology Mock Test 5

Questions:: 30
Duration:: 30 minutes
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Class 11
Biology Mock Test 6

Questions:: 30
Duration:: 30 minutes
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Class 11
Biology Mock Test 7

Questions:: 30
Duration:: 30 minutes
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Class 11
Biology Mock Test 8

Questions:: 30
Duration:: 30 minutes
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Class 11
Biology Mock Test 9

Questions:: 30
Duration:: 30 minutes
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Class 11
Biology Mock Test 10

Questions:: 30
Duration:: 30 minutes
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Practice tests for Topics/Chapters

Sample Questions

NEET Biology
Which of the following pairs of structures is found in both plant and animal cells?
A Centrioles and lysosomes
B Central vacuole and chloroplasts
C Ribosomes and mitochondria
D Cell wall and plasmodesmata
Class 12 Biology
In angiosperm double fertilisation, the Primary Endosperm Nucleus (PEN) becomes triploid (3n) because:
A One male gamete (n) fuses with two polar nuclei (n + n) in the central cell, resulting in a 3n zygote that develops into endosperm
B Two male gametes (n + n) fuse with one polar nucleus (n), forming a 3n structure
C The secondary nucleus (2n) divides mitotically without fertilisation to produce 3n endosperm
D One male gamete (n) fuses with the egg cell (n) to form 3n endosperm directly
Class 11 Biology
Enzyme activity is affected by temperature and pH. Which of the following statements best describes the effect of high temperature on enzyme function?
A High temperature increases the kinetic energy and always increases enzyme activity
B High temperature denatures the enzyme by disrupting its three-dimensional tertiary structure
C High temperature converts the enzyme into a different type of enzyme
D High temperature increases the activation energy required for the reaction
NEET Biology
According to the sliding filament theory, muscle contraction occurs when:
A Actin filaments slide over myosin filaments, increasing Z-line distance
B Myosin filaments shorten and pull actin filaments
C Actin filaments shorten during contraction
D Myosin filaments slide over actin without any change in length
NEET Biology
Which of the following is the correct statement about the nitrogenous waste excreted by adult frogs?
A Ureotelic — excrete urea
B Ammonotelic — excrete ammonia
C Uricotelic — excrete uric acid
D Both urea and ammonia depending on habitat
Class 12 Biology
Pollen viability in most angiosperms is typically limited to how long after pollen grain release, and which factor most critically affects this duration:
A About 30 minutes; moisture and temperature conditions
B Approximately 1 week; exposure to sunlight
C Up to 2 months; refrigeration at low temperatures
D Indefinitely; the pollen tube growth rate
Class 11 Biology
In the five-kingdom classification system proposed by R.H. Whittaker, which criterion was NOT used as one of the primary bases for classification?
A Body organization (prokaryotic vs. eukaryotic)
B Mode of nutrition (autotrophic vs. heterotrophic)
C Reproduction (sexual vs. asexual only)
D Phylogenetic relationships
Class 11 Biology
The concept of "consciousness" as a defining feature of life refers to:
A The ability of living organisms to sense their environment and respond to it
B Only human-level philosophical awareness and self-reflection
C The ability to dream and think about the future
D The capacity to communicate using language

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