Past Papers

Biology 2012

 

BAHAWALPUR Board 2012
Biology
(New Marks Scheme)
Inter Part I
Paper Objective Type
Time: 20 Minute
Max. Marks:17
Note: Four possible choices A, B, C, and D to each question are given. Which choice is correct; fill that circle in front of that question number. Use marker or pen to fill the circle, cutting two or more will result in zero in that question.

Question#1

  • A number of spices identify so far:(a) 4.5 Million
    (b) 3.5 Million
    (c) 2.5 Million
    (d) 1.5 Million
  • Cyclosis and amoeboid movements are because of:(a) Microtubules
    (b) Microfilaments
    (c) Intermediate Filaments
    (d) Macrotubles
  • The catalytic activity of enzyme is restricted to a small portion of enzyme known as:(a) Active Site
    (b) Catalytic Site
    (c) Binding Site
    (d) Reacting Site
  • The amount of heat absorbed by a liquid when into gas is called:(a) Heat capacity
    (b) Heat of vaporization
    (c) Specific Heat
    (d) Absorbed Heat
  • Family includes related:(a) Individuals
    (b) Species
    (c) Genera
    (d) Orders
  • Ustilago species is most common:(a) Rust Fungi
    (b) Yeast
    (c) Mold
    (d) Smut Fungi
  • Most ciliates are capable of sexual process called:(a) OOgamy
    (b) Mating
    (c) Conjugation
    (d) Plasmogamy
  • Some bacteria are microphilic like:
    (a) Compylobacter
    (b) Pseudomonas
    (c) E.Coli
    (d) spirochacic
  • The biological name of sweat pea is:(a) Lathyrus Adoratus
    (b) Arachis Hypogea
    (c) Solanum Nigrum
    (d) Lycoperisicum excluentum
  • Syrinx is oxygen of voice in:(a) Birds
    (b) Reptiles
    (c) Mammals
    (d) Amphibians
  • In Annelids the organ for excretion are:(a) Flame Cells
    (b) Protonephrida
    (c) Nephridia
    (d) Nephrums
  • First complete seeds appeared approximately 365 million year during late:(a) Silurian Time
    (b) Cambrain time
    (c) Ordovician Time
    (d) Devonian Time
  • Glycolysis occurs is:(a) Mitochondria
    (b) Ribosomes
    (c) Chloroplast
    (d) Cytosol
  • Casparion strips are presented in:(a) Cortex
    (b) Endodermis
    (c) Pericycle
    (d) Epidermis
  • A serum containing antibodies is called:(a) Antigen
    (b) Antibiotic
    (c) Lymph
    (d) Antiserum
  • Deficency of phosphorus cause stunted growth of:(a) Shout
    (b) Root
    (c) Leaf
    (d) Flower
  • Respiratory pigment present in muscles is called:(a) Heamoglobin
    (b) Hacmocyanim
    (c) Myoglubin
    (d) Gloubin


Paper Subjective Type
Time: 2:40 Hours
Max. Marks:68
Note
: Section I is compulsory. Attempt ant three (3) questions from Section II and any three (3) parts Section-I from Section III.

2. Write eight short answers:

  • What are Glycosidic Bonds?
  • Differentiate between Amylose and Amylopectin.
  • Define Pinnocytosis.
  • What is murcin?
  • What are Kelps?
  • Write two differences between fungus like protists and true fungi.
  • What is Absorption Spectrum?
  • Define stomata.
  • Define non-cyclic Phosphorylation.
  • What do you know about Radula?
  • Define pyrosis.
  • What are zymogen cells?

3. Write eight short answers:

  • What is gene therapy?
  • What is biological control.
  • Differentiate between retrovirus and bacteriophage.
  • How has small pox been eliminated from the world?
  • What is Aspergillosis?
  • What are Mycorrhizae?
  • Why Bryophytes are called amphibians of the plants?
  • What are Gymnosperms?
  • What is Cicinate Vernation?
  • What is the importance of Archacopteryx?
  • How coral Reefs are formed?
  • What are the functions of Placcenta?

4. Write Six short answers:

  • Define Apoenzyme.
  • What are giant amoeba?
  • Define thallus.
  • What is the functions of swinbladder?
  • Define mammals.
  • Define placenta.
  • Why do plaants appear green?
  • Define bioenergetics.
  • What are thylakoids?

PART-II

Question#5
(a) What is Clonning? Describe process of cloning. Also write down its Importance. 4
(b) Write a note on Inhabitors. 4

Question#6
(a) What are the effect of pH and temperature on the efficiency of an Enzyme Action. 4
(b) Write a note on Zooflagellates. 4

Question#7
(a) Differentiate between Prokaryotes and Eukaryotes. 4
(b) Write a note on Sphenopsida. 4

Question#8
Define Transpiration. What are different factors affecting the rate of Transpiration 8

Question#9
Describe process of Glycoysis. 8

 

 

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