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Class 12 - Biology Mock Tests

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Class 12
Biology Mock Test 1

Questions:: 30
Duration:: 30 minutes
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Class 12
Biology Mock Test 2

Questions:: 30
Duration:: 30 minutes
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Class 12
Biology Mock Test 3

Questions:: 30
Duration:: 30 minutes
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Class 12
Biology Mock Test 4

Questions:: 30
Duration:: 30 minutes
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Class 12
Biology Mock Test 5

Questions:: 30
Duration:: 30 minutes
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Class 12
Biology Mock Test 6

Questions:: 30
Duration:: 30 minutes
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Class 12
Biology Mock Test 7

Questions:: 30
Duration:: 30 minutes
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Class 12
Biology Mock Test 8

Questions:: 30
Duration:: 30 minutes
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Class 12
Biology Mock Test 9

Questions:: 58
Duration:: 58 minutes
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Class 12
Biology Mock Test 10

Questions:: 2
Duration:: 2 minutes
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Practice tests for Topics/Chapters

Sample Questions

Class 11 Biology
Carbohydrates serve as the primary energy source for cells. Which polysaccharide is the main storage form of glucose in animal cells (including humans)?
A Starch
B Cellulose
C Glycogen
D Chitin
NEET Biology
In the human heart, the pacemaker that initiates each heartbeat is the:
A Atrioventricular node (AV node)
B Sinoatrial node (SA node)
C Bundle of His
D A Purkinje fibers
NEET Biology
In the process of photosynthesis, the light-independent reactions (Calvin cycle) occur in which part of the chloroplast?
A Thylakoid membrane
B Stroma
C Granum
D Outer membrane
Class 11 Biology
Which of the following components of the human respiratory system is primarily responsible for gas exchange?
A Bronchi
B Bronchioles
C Alveoli
D Trachea
NEET Biology
Which of the following is the correct statement about "DNA profiling" in forensic science and its applications?
A DNA profiling uses STR (Short Tandem Repeat) markers analyzed by PCR to create a unique genetic fingerprint; it is used for paternity testing, forensic identification, and disaster victim identification
B DNA profiling sequences the entire human genome to identify individuals, which takes only a few hours
C DNA profiling compares blood types (A, B, AB, O) to identify individuals with high accuracy
D DNA profiling can only be done on blood samples and cannot be performed on other biological materials
Class 12 Biology
In an ecosystem, detritus decomposition occurs in the following correct sequence of stages:
A Detritivory → Fragmentation → Leaching → Catabolism → Humification → Mineralisation
B Fragmentation → Detritivory → Leaching → Catabolism → Humification → Mineralisation
C Leaching → Fragmentation → Detritivory → Humification → Catabolism → Mineralisation
D Fragmentation → Leaching → Detritivory → Catabolism → Mineralisation → Humification
NEET Biology
Active immunity differs from passive immunity in which of the following ways?
A Active immunity develops slowly and involves memory cells, while passive immunity is rapid but short-lived
B Active immunity is only cell-mediated, while passive immunity is only humoral
C Active immunity involves antibodies from another individual, while passive immunity involves self-produced antibodies
D Active immunity is always lifelong, while passive immunity lasts only a few days
NEET Biology
In a normal 28-day menstrual cycle, ovulation occurs on approximately which day?
A Day 5
B Day 14
C Day 21
D Day 28

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