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