RAWALPINDI BOARD 2016
PAPER BIOLOGY PART-I
Time: 20 Min.
(Objective Part)
Marks: 17
Note: You have four choice for each objective type question as A, B, C and D. The choice which you think is correct; fill that circle in front of that question number. Use marker or pen to fill the circles. Cutting or filling two or more circles will result in zero mark in that question.

Question#1

• Acetic and on entering the mitochandrian unites with co-enzyme-A to form:
  
  (a) Active acetate
  (b) Pyrunic acid
  (c) Fumarate
  (d) A-ketoglutarate
  
  
• The phenomenon associated with root pressure is:
  
  (a) Inhibition
  (b) Cohesion
  (c) Guttation
  (d) Tension
  
  
• The percentage of potassium in the human body is:
  
  (a) 0.15 %
  (b) 0.05 %
  (c) 0.35 %
  (d) 0.25 %
  
  
• The covalent bond between two monosaccharides is called:
  
  (a) Ionic bond
  (b) Glycosidic bond
  (c) Peptide bond
  (d) Hydrogen bond
  
  
• In an enzyme molecule, if the non-protein part is covalently bonded, it is called:
  
  (a) Co-enzyme
  (b) Apo-enzyme
  (c) Holo-enzyme
  (d) Prosthetic group
  
  
• When cross-section of centriole is observed it shows as it consists of:
  
  (a) 9-microtubules
  (b) 3-microtubules
  (c) 11-microtubules
  (d) 6-microtubules
  
  
• The process in which the phage is called a prophage is termed as:
  
  (a) Induction
  (b) Lysogeny
  (c) Deduction
  (d) Peneteration
  
  
• The bacteria which can grow either in the presence or absence of oxygen are called: (a) Facultative bacteria
  

  (a) Facultative bacteria
  (b) Aerobic bacteria
  (c) Microaerophilic bacteria
  (d) Anaerobic bacteria

• Diatoms belong to phylum:
  
  (a) Rhodophyta
  (b) Phaeophyt
  (c) Chrysophyta
  (d) Pyrrophyta
  
  
• The fungi which obtain their food from organic matter are called:
  
  (a) Saprotrophs
  (b) Autotrophs
  (c) Heterotrophs
  (d) Parasites
  
  
• Zeamays is the biological name of:
  
  (a) Rice
  (b) Barley
  (c) Rye
  (d) Corn
  
  
• The animals without a body cavity are called:
  
  (a) Eumetayoa
  (b) Pseudocelomata
  (c) Coelomata
  (d) Acoelomata
  
  
• Haeme portion of haemoglobin is same to porphyrin ring with a difference of:
  
  (a) Carbon atom
  (b) Hydrogen atom
  (c) Iron atom
  (d) Oxygen atom
  
  
• The animals which ingest food in liquid form are called:
  
  (a) Carnivores
  (b) Filter feeders
  (c) Macrophageus feeders
  (d) Fluid feeders
  
  
• Oxygen contents of fresh air are:
  
  (a) 200 ml/litre
  (b) 100 ml/liter
  (c) 10 ml/litre
  (d) 150ml/liter
  
  
• Blood provide immunity by:
  
  (a) Leukocytes
  (b) Platelets
  (c) RBC
  (d) Lymphocytes
  
  
• Garden snail belongs to class:
  
  (a) Gastropoda
  (b) Cephalopoda
  (c) Pelecypoda
  (d) Arthropoda

Time: 2:40 Hours
(Subjective Part)
Marks: 68
Section I

 
2.Attempt any EIGHT short questions. (8x2=16)

•  What are Lichens?
• Define population and give its two attributes.
• Draw structural formula of Glucopyranose.
• Differentiate between co-factor and activator.
• How irreversible inhibitors inhibit enzyme activity?
• How extreme changes in pH affect enzyme?
• How are foraminiferans source of lime stone?
• What are kelps? Give its parts.
• Give two examples of unicellular green algae.
• How ciliates differ from other protozoans?
• Differentiate between chemo therapy and radio therapy.
• Name, methods of asexual reproduction in Fungi.

3.Attempt any EIGHT short questions. (8x2=16)

• Write down the salient features of cell theory.
• How microtubule differ from microfilament?
• Differentiate between thylakoid and granum.
• What are Aerobic and Anaerobic respiration?
• What is syrnix? Give function.
• Write any two basic characters of chordate.
• Define the term protandrous and gemmule.
• Differentiate between Glottis and Epiglottis.
• Give two properties of respiratory surface.
• What is photorespiration? Name organelles involved in it.
• Differentiate between proterostome and Deutrostome with two points.
• How Pulmonary respiration differs from cutenous respiration?

4.Attempt any SIX short questions. (6 x 2 = 12)

• What are retroviruses? Give its causes?
• What are measomes in bacteria? Give also function.
• Define seed and fruit.
• What is chyme?
• Differentiate between diarrhoea and constipation.
• Differentiate between the plasmolysis and deplasmolysis.
• What is the earliest group of vascular plants? Quote only two examples of its extinct plants.
• What is the advantage of digestive tract as compared with a digestive cavity?
• What are Hydathodes?

SECTIN-II

Attempt any THREE questions.(8x3=24)

Question#5
(a)What is cloning? Describe its procedure.
(b)What is megaphyll? Describe various steps of evolution of Megaphyll.

Question#6
(a) Describe function of proteins.
(b) Explain digestion in cockroach with diagram.

Question#7
(a) Describe the fluid mosaic model of plasma membrane.
(b)Explain sexual reproduction in fungi.

Question#8
(a) Write a note on structure of virus.
(b) Sketch non cyclic photo phosphorylation.

Question#9
(a) Give the characteristics of cyanobacteria.
(b)Describe cohesion tension theory about ascent of sap.