Plus Two Zoology Model Question Papers Paper 1 is part of Plus Two Zoology Previous Year Question Papers and Answers. Here we have given Plus Two Zoology Model Question Papers Paper 1.
Plus Two Zoology Model Question Papers Paper 1
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Time: 1 Hour
Cool off time: 10 Minutes
Maximum: 30 Score
Answer all the following questions. Each carries 1 score.
The middle layer of the uterus is called………….
Find the odd one out
1. Trichoderma polysporum
2. Clostridium butylicum
3. Acetobacter aceti
4. Aspergillus niger
Study the relationship between the first two words and fill the blank space with a suitable word.
Pneumonia – Streptococcus pneumoniae Typhoid …….
Answer any 9 of the following. Each carries 2 scores.
From an infertility clinic, a doctor advised a childless couple to undergo GIFT.
- Expand GIFT
- Mention the steps involved in this procedure.
Vasectomy and tubectomy are said to be effective and irreversible contraceptive methods.
Differentiate between these two methods.
Construct a monohybrid cross between homozygous violet and white colored flowers of a pea plant.
How can one determine whether the F1 progenies are homozygous or heterozygous?
From a clinical laboratory, Ramu’s blood group was identified as ‘AB’ group. But his father has ‘A’ blood group and mother has ‘B’ blood group.
a. Is Ramu’s blood group identification correct?
b. Substantiate your answer using co dominance principle.
Identify the syndromes ‘A’ and ‘B’.
Complete the flowchart of Southern blot hybridization.
c. Mention two uses of DNA finger printing.
Read the following statements and answer the following questions.
1. A genetic material should be able to generate its replica.
2. A genetic material should not provide scope for mutation.
3. A genetic material should be able to express itself in the form of mendelian char Rewrite the wrong statement to correct one.
Observe the given diagram and answer the following questions.
- Identify the above process.
- Name the enzyme required to polymerise the DNA strand.
- Name the enzyme required to join the discontinuous strand.
- In eukaryotes replication of DNA occurs at………… phase of cell cycle.
Diagrammatic representation of Miler experiment is given below. Answer the following questions.
- Name ‘A’ and ‘B’
- From those given below choose the new molecules obtained by other scientists from similar experiments.
(Amino acid, Protein, Sugar, Fat, Alkaloid, pigments, flavanoid)
A collection of months made in England during 1850, supported evolution by natural selection. Write a note on the process of natural selection on month influenced by industrialization.
1. Name the yeast used for the commercial production of ethanol.
2. Name the yeast used for the production of statins
Answer any 3 of the following. Each carries 3 scores.
Arrange the following names in ascending order of evolution. Homo sapiens, Ramapithecus, Australopithecines, Homo habilis, Neanderthal, Homo erectus
Prepare a hand out to educate students about the symptoms of the dreaded disease cancer, its detection, and treatment.
“The accelerated rates of species extinction that the world is facing today is largely due to human activities”.
Do you agree with this statement? Justify your answer.
1. Name ‘A’ and ‘B’ from the above diagram.
2. Describe the following term
1. Gamete Intrafallopian transfer
2. a. Collect egg from a donor
b. Transfer the egg into the fallopian tube of another female who cannot produce one, but can provide suitable environ¬ment for fertilization and further development.
a. sterilisation procedure in the male
b. Here a small part of the vas defense is removed or tied up through a small incision on the scrotum.
a. Sterilisation procedure in the Female
b. a small part of the fallopian tube is removed or tied up through a small incision in the abdomen or through the vagina.
3 violet : 3 white
b. Test cross
b. The genotype of Ramu’s father and mother are either IAIA or lAi and IBIB or IBi respectively. The genotype of the AB blood group is IAIB. AB blood group is heterozygous but here both alleles express their own type of sugar, It an example for codominance, It is a deviation from Mendelian principle.
a. Down’s Syndrome
b. Turner’s Syndrome
A – Digestion of DNA by restriction endonucleases.
B-Transferring (blotting) of the separated DNA fragment to synthetic membranes, such as nitrocellulose or nylon.
C-Any 2 uses of DNA Fingerprinting such as
- Test of paternity.
- Identify the criminals (Rape murder etc)
- Population diversity determination.
- Determination of genetic diversity.
a. 1- A Genetic material should be able to generate its replica
3- A genetic material should be able to express itself in the form of Mendelian Characters.
b. A genetic material should provide the scope for slow changes (mutation) that are required for evolution
1. DNA Replication
2. DNA dependent DNA polymerase
2. Sugar, Fat, Pigments
Before industrialization set in (1850, thick growth of almost white – colored lichen covered the trees – in that background the white-winged moth survived but the dark-colored moth were picked out by predators, the lichen can be used as industrial pollution indicators they will not grow in areas that are polluted. Hence, moths that were able to camouflage themselves, i.e., Hide in the background, survived.
During post industrialization period (1920), the tree trunks became dark due to industrial smoke did not survive due to predators, dark-winged or melanizedmoth survived.
This showed that in a mixed population, those that can better-adapt, survive(Natural selection) and an increase in population size
1. Brewer’s Yeast (Saccharomyces cerevisiae)
Ramapithecus → Australopithecus → Homo Habits → Homoerectus → Neanderthal man → Homo sapiens
Symptoms of cancer: Uncontrolled growth of a cell, Metastasis etc
Detection: Biopsy and histopathological studies, CT scan, MRI scan, Antibodies against cancer-specific antigens etc.
Treatment: Surgery, radiation therapy, and immunotherapy.
Write an account on Habitat loss and fragmentation, Over exploitation, Alien species invasion, Co Extinction
B- RNA Polymerase
2. a. Capping: In Eukaryotes an unusual nucleotides mGPPP (menthyl guanosine triphosphate) is added to the 5’- end of hnRNA
b. Tailing: In tailing, adenylate residues (200-300) are added at 3’-end of Mma in a template independent manner.
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