Uttarakhand Board Class 12 Question Paper 2022 for Biology

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INTERMEDIATE BIOLOGY (THEORY)
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Time:3 Hours Max.Marks:70

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The number of chambers in a typical gymnospermic anther is-
(a) 2 (b) 4 (c) 8 (d) l0
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The process of building a mature female gamete is known as-
(a) Oogenesis (b) Spermatogenesis (c) Apomixis (d) Sporogenesis
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According to Mendel, which of the following is dominant character (trait)-
(a) Dwarf stem and white flower (b) Terminal flower and green seed
(c) Violet flower and tall stem (d) Inflated pod and wrinkled seed
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Who does the work of reading the genetic code in the following-
(a) rRNA (b) mRNA
(c) IRNA (d) hnRNA
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Write the name of the father of Green Revolution in India.
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When and how was the first use ofgene therapy used ?
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Which statement best describes parasitism in the following statements ?
(a) An organism benefits.
(b) Both organism benefi ts.
(c) An organism has the advantage, the second is not affected.
(d.1 An organism has the advarrtage. the second is allected.
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What is reforestation ?

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According to theworld Healh organization, write definition of reproductive health
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In which part ofthe sperm are found mitochondrion and what is the function of it ?
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Write any two functions of placenta.
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Write any two uses of pedigree in human genetis.
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Smack, charas, cannabinoids and nicotine affect which part ofthe body directly ?
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What is Pomato and how it is produced ?
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Write any four examples of Natural Bio fertilizers.
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What is vaculoviruses and what is the use ofthem ?
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Bio-active molecule cyclosporine 'A' is produced from which fungus and where it is used ?
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Create a pyramid of energy in the ecosystem and tell what changes occure in quantities
ofenergy from
producers to the consumer level ?
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Write the names ofany four ecological variations found in India.
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Write the following word extention-
(a) CNG (b) IUCN
(c) BOD (O cFC
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What is the menstrual cycle and how many days it is repeated after a period ? What
is the effect of
menstrual cycle at the time of pregnancy 1
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What is Mendel's Law of Independent Assortment ? Describe the Law of lndependenr
Assortmenl
with the help of Punnette Squire .

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What is Nucleosome ? Draw a labeled diagram of its structure and tell which basic alkaline acids are
found in its protein ?
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Write any two main differences in the following-
(a) DNA and RNA.
(b) Dominanl and recessive.
(c) Homology and analogy.
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Explain the structure of the bivalent polynucleotide chain by creating a labelled linear diagram.
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Describe the different phases of sewage treatment . Write any two contribution of
micro-organisms in the treatment of sewage ?
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Briefly describe the following-
(a) Electrophoresis
(b) Biolistic
(c) pBR 322
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What is Bt and what is it made of bacteria ? Mention its use .
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What do you think of biotechnology ? To illustrate the use of its use in different areas, to
benefit human beings .
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What are the main components of building an ecosystem ? Establish relationships between
components found in an aquatic ecosystem .
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Define the following with the example-
(a) Predation (b) Fellowship (c) Competition

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Describe Biodiversity in India .
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what is sexual reproduction ? Describe different stages of sexual reproduction in plants.
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what is oogenesis ? Describe the oogenesis process with the necessary diagrams.
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what is genetic code ? what is the total number codons in genetic signbling method ? what
Codons are called starting codons and initiation codons ? Specify the characteristics of genetic
code .
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Describe the following-
(a) Mendeleal disorder
(b) Hardi-Venberg Theory
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What is population? Describe its key properties . Mention the basic processes, in which the density
of the population decreases and increases .
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Write notes on following-
(a) Water pollution and its control
(b) Green house effect
(c) People's involvement in forest conservation.