RAWALPINDI BOARD 2014
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.

• Quantitative study of energy relationship in biological system is called:

(a) Bioenergetics
(b) Biosynthesis
(c) Biodegradation
(d) Biotechnology

• Oxygen released during photosynthesis comes from:

(a) CO₂
(b) Glucose
(c) Water
(d) CaCO₃

• Sites of digestion in the digestive system of man are:

(a) 1
(b) 2
(c) 3
(d) 4

• The lungs are covered by double layered thin membranous sacs called:

(a) Pleura
(b) Air sacs
(c) Larynx
(d) Diaphragm

• The volume of dry seeds may increase up to 200 times after absorbing water by:

(a) Diffusion
(b) Lmbibition
(c) Osmosis
(d) Active transport

• The heart is enclosed in a double membranous sac, the:

(a) Pleural cavity
(b) Abdominal cavity
(c) Thoracic cavity
(d) Pericardial cavity

• The tentative explanation of observation is called:

(a) Hypothesis
(b) Deduction
(c) Law
(d) Theory

• The Covalent bond between two mono-saccharides is called:

(a) Peptide bond
(b) Glycosidic bond
(c) Hydrogen bond
(d) Ester bond

• The optimum pH of salivary amylase is:

(a) 2.80
(b) 4.80
(c) 6.80
(d) 8.80

• Taysachs disease results due to accumulation, in brain cells, of:

(a) Mg⁺ ions
(b) Glucose
(c) Proteins
(d) Lipids

• Paramyxo-viruses cause he disease.

(a) Influenza
(b) Polio
(c) Mumps and measles
(d) Herpes simplex

• Which one of the following is an aerobic bacteria. .

(a) E.Coli
(b) Spirochete
(c) Campylobacter
(d) Pseudomonas

• An outer flexible covering of ciliates is:

(a) Cell wall
(b) Pellicle
(c) Sheath
(d) Cell membrane

• Lovastatin is used for lowering blood:

(a) Pressure
(b) Chlolestrol
(c) Glucose
(d) Uric Acid

• Tracheophyta is further s-lb divided into:

(a) 2-Subdivisions
(b) 3-Subdivisions
(c) 4-Subdivisions
(d) 7-Subdivisions

• Aquatic arthropods respire through:

(a) Lungs
(b) Skin
(c) Gills
(d) Spiracles

• A free swimming trochophore larva is produced during the life cycle of:

(a) Coelenterata
(b) Porifera
(c) Annelida
(d) Arthropods

Time: 3:10 Hours
(Subjective Part)
Marks: 83
Section-I

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

• Define Physiology.
  
• Define biome.
  
• Define biochemistry.
  
• Define apoenzyme.
  
• What is optimum temperature for enzyme?
  
• Define inhibitors of enzyme.
  
• What is Coelom?
  
• Differentiate between diploblastic and triploblastic animals,
  
• Define regeneration.
  
• Define polymorprism.
  
• What are blue babies?
  
• What is stroke?

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

• Write down any two characteristics of cyanobacteria.
  
• Describe Physarum Polycephalum.
  
• What are Kelps?
  
• How algae differ from plants?
  
• What do you know about dinoflagellates?
  
• Write down any four characters of bryophytes.
  
• Describe Paraphyses.
  
• Define bioenergetics.
  
• What is Z-Scheme.
  
• Write down the location of stomach.
  
• Give the effects of obesity?  C0 101
  
• Write down the role of Gastrin.

4. Attempt any SIX short question              (6x2=12)

• Write down salient features of cell theory.
  
• Explain briefly endocytosis.
  
• Differentiate between lytic ad lysogenic phage.
  
• Define Nuclear mitosis.
  
• State role of fungi and algae in lichen for each other,
  
• Differentiate between diaphragm and pleura.
  
• What are Parabronchi?
  
• State names of four properties of repiratory surfaces.
  
• Define Photorespiration.

SECTION –II

Attempt any THREE questions.               (8x3=24)

5. (a) How study of biology helped mankind to improve
(b) Describe influx of re ions hypothesis to explain the opening and closing of stomata.

6. (a) Describe the importance of water for life.
(b) Describe the structure and functions of plasma membrans.

7. (a) Describe different physical and chemical methods to control bacteria,
(b) Describe land adoptations in bryophytes.

8. (a) Describe life cycle of a bacteriophage.
(b) Draw sketch and explain Krebs cycle.

9. (a) Describe absorption of digested food in small intestine.
(b) Write a note on economic losses due to fungi with reference to animals diseases only.

SECTION –II

Attempt any THREE questions.               (5x3=15)

10.(A)

• Yor are provided with egg albumin and Bluret reagent. Write down Biochemical test for compounds present in it.
  
• What are proteins?

(B)You are given the flower "Lathyrut odoratus". Describe in technical terms its following parts.

• Calyx.
  
• Androecium.
  
• Gynoecium
  
• Differentiate between complete and incomplete flower.

(C) Sketch and label digestive system to cockroach.
(D)Write down the procedure for measurement of blood pressure during rest and after exercise with B.P apparatus.
Differentiate between systolic and diastolic blood pressure.
(E)Following specimens were studied in the laboratory. Give one character of each to identify.
Euglena.
Paramecium
Yeast
Prothallus of adiantum.
Pins male cone.