KSEEB Model Question Papers For Class 12 Biology
II PUC Model paper: KSEEB is the independent education council of Karnataka for conducting important exams and regulate the education pattern at the same time. 2nd PUC is the high level competitive public exam where lakhs of students appear every year. Students choose subjects based on their interests with the view of pursuing higher studies in future in the beginning of pre-university course. Reading detail explanation and attempting the learning activities are must fir having deep knowledge about a subject. Students are also advised to practice model question papers from kseeb.kar.nic.in collecting from the official website of KSEEB for ensuring complete preparation. In class 12 biology students have to read many new chapters and detail analysis of previously learnt chapters which covers total syllabus. After completing textbook students should follow model question papers to have an idea about the final exam including its pattern, allotment of marks, types of questions etc.
Class 12 students have to study tirelessly for performing well in the final exam and getting their expected marks. The exam is also important to students as its opens multiple ways of their future higher education. But students have to study extraordinarily if they want to preform exceptionally in the exam. Smart work is always helpful so students should plan their preparation strategy and follow it strictly till the exam comes. Attempting model question papers is one of the wise methods adopting by students to be in the updated form with exam information. Having complete idea is not enough for students and they should regular self-analysis to improve their preparation level. Biology is also a practical lesson based subject for which in-depth analysis of each part is required. Deeply studying will make students able enough to have detail knowledge about all topics so that they can answer any question come from a chapter. After completing conventional pattern study students should follow the model question papers for improving the answer writing skills along with time management which results in positive outcomes. With boost up confidence students will attempt the final exam and performed well according to their expectations. Students may check class 12 biology model question papers from the following link:
KSEEB (II PUC) Model Question Papers For Class 12th Biology 2023 – 24
Biology (36)
Part – A
(I) Select the correct alternative from the choices given below:
(1) Haploid conditionis not observed in which of the following cells
(a) Synergids and Egg
(b) Zygote and PEN
(c) Antipodal and Egg
(d) Antipodal and Synergids
(2) Statement I: Formation of fruit without fertilization is called apomixis
Statement II: In some species of Asteraceae and grasses seeds are formed without fertilization
(a) Both Statement I and Statement II are correct
(b) Both Statement I and Statement II are incorrect
(c) Statement I is correct and Statement II is incorrect
(d) Statement I is incorrect and Statement II is correct
(3) During gestation the foetus develops limbs and digits by the end
(a) First month
(b) Second month
(c) Third month
(d) Fifth month
(4) The secondary oocyte after ovulation is covered by a non-cellular layer of
(a) Cumulus oophorus
(b) Corona radiata
(c) Zona pellucida
(d) Cortical layer
(5) An example of hormone releasing IUD among the following
(a) Cu – 7
(b) Lippes loop
(c) LNG – 20
(d) Multiload 375
(6) Which of the following is a foetal sex determination test?
(a) ZIFT
(b) GIFT
(c) MTP
(d) Amniocentesis
(7) Which of the following Mendelian gene disorder is the representation of allosomal recessive trait?
(a) Hemophilia
(b) Thalassemia
(c) Sickle cell anemia
(d) Myotonic dystrophy
(8) The process of removal of introns and joining of exons in a defined order in a primary transcripts occurs in
(a) Prokaryotes
(b) Eukaryotes
(c) Prokaryotes and Eukaryotes
(d) Prokaryotes and Protista
(9) A type of Natural selection in which more individuals acquire mean character value is called
(a) Stabilizing selection
(b) Disruptive selection
(c) Directional selection
(d) Dominant selection
(10) Drug called “Heroin is synthesized by
(a) Methylation of Morphine
(b) demethylation of Morphine
(c) Acetylation of Morphine
(d) deacytalation of Morphine
(11) The fungus not used in the production of any Industrial product is
(a) Penicillium
(b) Aspergillus
(c) Trichoderma polysporum
(d) Glomus
(12) Significance of Insertional inactivation method in Recombinant DNA technology is to
(a) Introduce the recombinants
(b) Isolate gene of Interest
(c) Select the recombinants
(d) Select the gene of interest
(13) Which of the following organisms are studied by Cornell’s in his elegant field experiments to study competition
(a) Warbler species
(b) Chathamalus and Balanus
(c) Cucko and Crow
(d) Cattle egret and grazing cattle
(14) The correct sequence in the process of decomposition is
(a) Humification—-Leaching—-Catabolism—- Mineralisation —-Fragmentation
(b) Catabolism—-Leaching—-Fragmentation—-Humification—- Mineralisation
(c) Leaching—-Fragmentation —-Catabolism—-Humification—- Mineralisation
(d) Fragmentation —-Leaching—-Catabolism—–Humification—-Mineralisation
(15) Western Ghats have a greater diversity of
(a) Amphibians
(b) Reptiles
(c) Aves
(d) Mammals
(II) Fill in the blanks by choosing the appropriate word/Words from those given below:
(Commensalism, Alveoli, Ammensalism, Panspermia, Codominance, Perisperm)
(16) The residual, persistent nucellus is called——-
(17) The cells of ————secrete milk in the mammary glands.
(18) AB blood group inheritance is an example for ————-
(19) ——— is the theory that proposes that units of life called spores were transferred to different planets including earth
(20) A population interaction in which one species is harmed and the other species is unaffected is ———
Part – B
Answer any FIVE of the following questions in 3 – 5 sentences wherever applicable:
(21) List any four complications a person suffers from untreated sexually transmitted infections?
(22) State the two medical grounds on which a pregnancy can be terminated according to the amended Medical termination of pregnancy act 2017.
(23) Give the phenotypes of the parental Drosophila that has produced 1.3% and 37.2% recombinants respectively in T. H. Morgan Dihybrid cross experiment.
(24) Differentiate divergent evolution from convergent evolution.
(25) List any two differences between active and passive immunity.
(26) What are primary lymphoid organs? Give two examples
(27) Baculoviruses are excellent biocontrol agents in Integrated Pest Management. Comment.
(28) Ecological pyramids have limitations. Justify the statement with two reasons.
Part – C
Answer any FIVE of the following questions in 40 – 80 words each wherever applicable:
(29) a) Why is bagging of emasculated flowers essential during hybridization experiment?
(b) Mention the cells of the mature pollen grain.
(c) Give the scientific name of the plant that has the viability record of 10,000 years.
(30) Explain the changes that occur in ovary and uterus during luteal phase of menstrual cycle.
(31) Draw a diagrammatic sketch of the Lac operon when lactose is present in the medium
(32) With respect to the evolution of man, name a, b, c, d, e, and f
Period | Places of origin | Type of man |
2 million years ago b
1,00,000 – 40,000 years |
a
Java d |
Australopithecines
c e
|
f | Africa | Homo sapiens |
(33) Mention the three critical areas of biotechnology
(34) What is gene therapy? Explain the steps involved in curing ADA deficiency by gene therapy.
(35) (a) Co-extinctions lead to loss of biodiversity. Justify the statement with two examples.
(b) What are hot spots of biodiversity? 36. Describe the components of an aquatic ecosystem taking pond as an example
Part – DSection -I
Answer any FOUR of the following questions in about 200 – 250 words each wherever applicable:
(37) Draw a neat labeled diagram of human male reproductive system.
(38) Mention the chromosomal disorders that are due to trisomy, represent their karyotype and two symptoms each
(39) With the help of schematic representation illustrate how an infected animal cell can survive while viruses are being replicated and released
(40) With reference to DNA finger printing define the following terms:
(a) Repetitive DNA (b) Satellite DNA (c) DNA polymorphism (d) VNTR (e) Probe
(41) What is genetic code? Explain any four salient features of genetic code
(42) Describe the biological treatment of primary effluent.
(43) (a) Explain the process of Polymerase chain reaction in amplification of desired DNA
(b) Draw a labeled diagram of pBR322 vector.
(44) (a) Study the population growth curve given below and answer the questions that follows;
(i) Identify the growth curves ‘a’ and ‘b’
(ii) Mention the conditions responsible for the curves ‘a’ and ‘b’ respectively.
(b) Explain the mechanism of sexual deceit in relation to mutualism.
Section – II
Answer any ONE of the following questions in about 200 – 250 words each wherever applicable:
(45) Double fertilization is the unique feature of angiosperms and the products of this double fertilization is zygote and PEN. In context of this when a hexaploid plant is pollinated by a tetraploid plant find out the ploidy of zygote and PEN through a schematic illustration.
(46) ABO blood grouping provides a good example of multiple alleles and are controlled by the gene ‘I’. This gene product is responsible for the production of a sugar polymer that protrudes from its surface. The ‘I’ gene has three alleles they all follow a specific pattern of in,
(a) What are the probable number ofphenotypes and genotypes for ABO blood group in human population
(b) Mention the genotypes of all the blood group phenotypes.
(c) Name the type of blood groups of the parental combination in which both their blood group is not inherited to their children
(47) Five patients suffering from certain diseases visit a local primary health centre. The Doctor does a thorough check and prepares the report of the five patients and is indicated in the below given table. Analyse the table and diagnose the disease they are suffering from and causative agent of the diseases.
Patient 1 | High fever, constipation, stomach ache, loss of appetite, headache |
Patient 2 | Chills and high fever recurring every 3 – 4 days |
Patient 3 | Constipation, mucous and blood clots in stool, abdominal pain and cramps |
Patient 4 | Internal bleeding, blockage in the internal passage, muscular pain, fever |
Patient 5 | Dry, scaly lesions on skin, nails and scalp |
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36. BIOLOGY MQP II PU 2023 - 2024
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