This practice paper is completely based on the CBSE class 12th Biology question paper 2012 in MCQ form to build you concept in class 12th biology
This practice paper can also be helpful for NEET (AIPMT)
For example:
Q. Why is it important to feed the newborn babies on colostrum?
The above given question could be asked in NEET in the following See moreway:
Q. Read the important statement in favor of colostrums
i. It produces immunoglobulin and cytokines where IgA is in highest proportion
ii. It provides vitamins and essential oils but not minerals
iii. It transfer growth factor like epidermal and epithelial growth factor
iv. It is nature’s perfect first food
Select the incorrect option
a) i, ii
b) i, iv
c) i, iii, iv
d) i, iii
Learn and judge yourself with jagranjosh. Com practice question paper that how question are being framed in CBSE class 12th board exam as well as in NEET
Apis indica
Apis florae
Apis mellifera
Apis dorsat
Rate this question:
It supplies oxygen to the foetus
It delivers nutrients to foetus
It helps to withdraw blood rich in carbon dioxide and depleted in nutrients
All the above are correct
Rate this question:
More, less
Less, medium
Medium, more
Less, more
Rate this question:
Complete dominance
Incomplete dominance
Codominance
Epistasis
Rate this question:
They add inorganic matter to the soil and help in decreasing its fertility
They add organic matter to the soil and to help in decreasing its fertility
They add organic matter to the soil and to help in increasing its fertility
They utilize organic matter to the soil and to help in increasing the porosity of the soil
Rate this question:
It is made of two polynucleotide chains, where the backbone is constituted by sugar-phosphate and the bases project inside
The pitch of the helix is 3.4nm and there are roughly 10 bp in each turn
Two nucleotides are linked through phosphodiester bond
All of the above are correct
Rate this question:
It produces seedless fruit in the absence of successful fertilization
It produces seedless fruit in the presence of successful fertilization
It produces seedless fruit in the absence of successful Ovulation
It produces leafless fruit in the absence of successful ovulation
Rate this question:
White and green
Red and green
White and purple
Pink yellow
Rate this question:
A = q, B = s, C = p, D = t, E = r
A = s, B = r, C = p, D = t, E = q
A = t, B = p, C = q, D = r, E = s
A = r, B = s, C = q, D = p, E = t
I, ii
I, iv
Iii, iv and i
I, iii
Rate this question:
Deletion of gene for ADA which effects the functioning of immune system
Substitution of gene for ADA which effects the functioning of immune system
Deletion of gene for ADA which effects the functioning of pancreatic glands
Addition of gene for ADA which effects the functioning of immune system
Rate this question:
Members of a population do not have a heritable variations
In a population, more individuals are produced each generations that can survive or reproduce
The result of natural selection is a population adapted to it
Some individuals have adaptive characteristics that enable them to survive and reproduce better than other individuals
Rate this question:
Artificial selection
Mercy killing
Origin of species
Natural selection
Rate this question:
Corpus luteum
Zona pellucid
Corona radiate
B & c only
Rate this question:
Basically they are analogous as differ in origin and functionally similar
Basically they are analogous as differ in function and similar in origin
Basically they are homologous as differ in origin and functionally similar
All are correct in reference of evolution
Rate this question:
It produces assured seed set only in the presence of pollinators
It will lead to a strong progeny
It produce a flower that are variably autogamus
It produces assured seed set even in the absence of pollinators
Rate this question:
Production of complete individual from unfertilized egg
Production of incomplete individual from unfertilized egg
Production of fruit from unfertilized ovule
Production of incomplete flower from unfertilized ovule
Rate this question:
When temperature is low
During evening when temperature is very low
When temperature is high
During night only
Rate this question:
Reduce the emission of CFC
To get the good efficiency of the engine
Stop the emission of other dangerous compounds
Reduce the emission of other dangerous compounds
Rate this question:
Presence of histidine and aspartic acid which are positively charged in their side chains
Presence of lysine and arginine which are positively charged in their side chains
Presence of lysine and aspartic acid which are positively charged in their side chains
Presence of glutamic acid and aspartic acid which are positively charged in their side chains
Rate this question:
Leaves and the raisin of cannabis plant and it directly affects the respiratory system
Leaves and the raisin of Atropa belladona and it directly affects the cardiovascular system
Leaves and the raisin of Atropa belladona and it directly affects the cardiovascular system
Leaves and the raisin of cannabis plant and it directly affects the cardiovascular system
Rate this question:
Because they are required to keep the two strands separated
Because they cannot add new nucleotides at low temperatures
Because they are easier to isolate than psychrophilic DNA polymerases
Because the priming and extension steps must be carried out at high temperatures to prevent the single strands from reannealing
Rate this question:
In the head part of the sperm, provide mobility to the sperm and to promote meiosis following fertilization
In the middle part of the sperm, provide mobility to the sperm and to inhibit meiosis following fertilization
In the middle part of the chromosome, facilitate linkage during meiosis following fertilization
In the head part of the sperm ,stores powerful enzymes needed to avoid the egg (zona pellucida)
Rate this question:
Massive imbibitions of water
Sudden increase in cell division
Massive glycolysis in epidermis
Differentiation of cotyledon
Rate this question:
Inhibit the filtration process plus remanufacture damaged red blood cells
Control the breakdown of sugar and developing immunity against infection
Developing immunity that is protection against infection plus recognizes and removes old, malformed, or damaged red blood cells
All of the above are the function of spleen
Rate this question:
It is coded by “z” genes and responsible for the hydrolysis of lactose into galactose and glucose
It is coded by “y” gene and responsible to increase the permeability of cell
It is coded by “i” genes and responsible for the hydrolysis of lactose into galactose and glucose
The main function of β-Galactosidese is to have an overall control on the functioning of all genes
Rate this question:
I, ii
I, iii
Iii, iv and i
I, iv
Rate this question:
Leghorn
Rhode Island Red
Ancona and Minorca
Light Sussex
Rate this question:
I, ii
I, iv
I, iii, iv
I, iii
Rate this question:
Quiz Review Timeline (Updated): Mar 19, 2023 +
Our quizzes are rigorously reviewed, monitored and continuously updated by our expert board to maintain accuracy, relevance, and timeliness.
Wait!
Here's an interesting quiz for you.