FAISALABAD BOARD 2013
PAPER BIOLOGY PART-II
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

• The cells provide liquid medium for protection and nourishment to sperms:
  
  (a) Placenta
  (b) Epididymis
  (c) Sertoli
  (d) Vasdeference
  
  
• The maximum speed of nerve impulse in human being recorded is:
  
  (a) 100 m/sec 
  (b) 120 m/sec
  (c) 40 m/sec
  (d) 160 m/sec
  
  
• The structures which respond by the impulse coming from the motor neurons are called:
  
  (a) Receptors
  (b) Sensory neurons
  (c) Motor neurons
  (d) Effectors
  
  
• The vertebral column of human consists of vertebrae:
  
  (a) 31
  (b) 32
  (c) 33 
  (d) 34
  
  
• This type of wood is most resistant to decay and insect attack: ,
  
  (a) Callus
  (b) Hardwood 
  (c) Heat wood 
  (d) Sapwood
  
  
• The animals that generate their own body heat through heat production as by product during metabolism are called:
  
  (a) Endotherm 
  (b) Ectotherrn 
  (c) Heterotherm
  (d) All of these
  
  
• The major homeostatic function of liver is to synthesize:
  
  (a) Iron 
  (b) Glycogen
  (c) Bile
  (d) Red blood cells
  
  
• The earth surface is covered with water about:
  
  (a) 50% 
  (b) 60%
  (c) 70% 
  (d) 80%
  
  
• Which scientist believed in divine creation?
  
  (a) Linnaeus
  (b) Darwin 
  (c) Lyell 
  (d) Cuvier
  
  
• In dams, the power used to drive generators to produce electricity is called:
  
  (a) Wind power
  (b) Nuclear power
  (c) Hydroelectric power
  (d) Tidal power
  
  
• The light in this zone is insufficient to support photosynthesis
  
  (a) Limnetic 
  (b) Profundal
  (c) Littoral
  (d) All of these
  
  
• Who defined the niche as the species occupation?
  
  (a) Charles Eton
  (b) Charles Lyell
  (c) Cuvier
  (d) Sutton
  
  
• This cross finds out the homozygous or heterozygous nature of the genotipe:
  
  (a) Self cross 
  (b) Back cross 
  (c) Test cross
  (d) Dihydride cross
  
  
• Meiosis generally takes place in plants during formation of
  
  (a) Gametes 
  (b) Spores
  (c) Zygote
  (d) Embryo
  
  
• In eukaryotes, the number of nucleotides in Okazaki fragments are about:
  
  (a) 1000 - 2000
  (b) 100 - 200
  (c) 300 - 400 
  (d) 400 - 500
  
  
• Blastomere are formed during:
  
  (a) Cleavage 
  (b) Gastrulation
  (c) Growth 
  (d) Fertilization
  
  
• The total gestation period in human female is about:
  
  (a) 28 days 
  (b) 120 days 
  (c) 180 days 
  (d) 280 days

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

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

• Distinguish between hypotonic and hypertonic environment.
• What is meant by shivering and non-shivering Thermogenesis?
• Differentiate between osmoconformers and osmoregulators.
• Flow does tendon differs from ligament?
• Differentiate between sapwood and heartwood.
• What are disadvantages of exoskeleton?
• Write four similarities of nervous and chemical coordination.
• What is Epilepsy?
• Differentiate between endanagered and threatened species.
• What are hydrothermal vents?
• Define autecology and synecology.
• Differentiate between primary and secondary succession.

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

• Define haploid parthenogenesis.
• What are ovoviviparous?
• Give two disadvantages of cloning.
• Define teratology.
• What is primitive streak?
• What are intercalary meristems?
• Define phenylketonuria.
• What are nucleosomes?
• Define desertification.
• Differentiate between weather and climate.
• Define renewable resources. Give two examples.
• What is ozone?

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

• How cytokinesis occurs in plants?
• What do you know about Turner's syndrome?
• What events occur in anaphase of mitosis?
• What is type II diabetes or NIDDM?
• Differentiate between homogametic and heterogametic organisms.
• What is the product rule?
• What do you know about particle gun?
• How gene therapy has been used for the treatment of coronary artery angioplasty?
• What plant cells are said to be totipotent?

Section-III

Attempt any THREE questions. (8 x 3 = 24)
Question#5
(a) Explain the structure of nephron by drawing a labeled diagram.
(b) Describe the function of DNA polymerise III in the process of replication.

Question#6
(a) Discuss method of locomotion in paramecium.
(b) Define cell cycle. Name its two phases. Explain interphase in detail.

Question#7
(a) What are receptors? Describe various types of receptors found in humans.
(b) Describe law of segregation with an example.

Question#8
(a) Explain the role of phytochromes in phtoperiodism.
(b) Write note on wildlife.

Question#9
(a) Describe the role of nucleus in the development by giving example of acetabularia (unicellular alga).
(b) Write note on Tundra Ecosystem.