Biology
(Objective)
Time Allowed:20 minutes
Note:. You have four choices for each objective type question A, B, C and D. The choice which you think is correct; fill that circle is from 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 the question. Write PAPER CODE, which Is printed on this question paper, on the both sides of the Answer Sheet and fill bubbles accordingly, otherwise the Student will be responsible for the situation. Use of Ink Remover or white correcting fluid is not allowed.

Question#1

• Which of the following act as homeostatic thermostat in humans?
  
  (a) Thalamus
  (b) Hypothalamus
  (c) Hypodermis
  (d) Cerebrum
  
  
• Muscle is Connected to bone by
  
  (a) Tendon
  (b) Ligament
  (c) z- Line
  (d) Cross bridge
  
  
• Which of the following is not endotherm.
  
  (a) Bird
  (b) Amphibian
  (c) Flying insect
  (d) Mammal
  
  
• Thick filament in myofibril is made up of
  
  (a) Myosin
  (b) Actin
  (c) Tropomyosin
  (d) Troponin
  
  
• Path way of passage of impulse during reflex action is called
  
  (a) Reflex
  (b) Stimulus
  (c) Reflex arc
  (d) Membrane potential
  
  
• Study of aging is called
  
  (a) Teratology
  (b) Gerontology
  (c) Palaentology
  (d) Cell biology
  
  
• Transfer of genetic material from one cell to other that can alter the genetic makeup of recipient cell is called
  
  (a) Transformation
  (b) Translation
  (c) Transcription
  (d) Replication
  
  
• In which stage of Meiosis, crossing over occur
  
  (a) Leptotene
  (b) Zygotene
  (c) Pachytene
  (d) Anaphase
  
  
• During which stage chromosomes are doubled
  
  (a) G1 phase
  (b) S — phase
  (c) G-2 phase
  (d) G 0 phase
  
  
• Expression of a trait is termed as
  
  (a) Genotype
  (b) Karyotype
  (c) Wild type
  (d) Phenotype
  
  
• A full set of genes Of an individual is called
  
  (a) Genome
  (b) Genotype
  (c) Karyotype
  (d) Dominance
  
  
• Inheritance of acquired characteristics was proposed by
  
  (a) Darwin
  (b) Mendel
  (c) Lamarck
  (d) Malthus
  
  
• Symbiotic association of an alga living within fungus mycelium is known as
  
  (a) Mycorrhiza
  (b) Lichen
  (c) Root nodules
  (d) Parasitism
  
  
• Coniferous forests located at high latitude are called
  
  (a) Alpine
  (b) Boreal
  (c) Tundra
  (d)Deciduous
  
  
• Causative agent of Genital herpes is a
  
  (a) Virus
  (b) Bacteria
  (c) Fungi
  (d) Protozoan
  
  
• Study of human populations and the thing that affect them, is called
  
  (a) Human biology
  (b) Socio biology
  (c) Demography
  (d) Teratology
  
  
• Union of gametes is called
  
  (a) Fertilization
  (b) Gametogenesis
  (c) Spermatogenesis
  (d) Oogenesis

Biology
(Subjective)
(Session 2012-14)
Time Allowed: 3:10 hours
(inter Part - 11)
Section I

2. Answer briefly any Eight parts from the followings:. (8 x2=16)

• Differentiate ureotely from uricotely.
• What is lithotripsy? Explain.
• Explain hydrobiosis with an example.
• What is vascular cambium? Give its function
• Name components of human axial skeleton.
• Define Hing joint, Give example.
• What are intercalary meristems?
• What is the importance of mitosis?
• Whit is metastasis?
• What are vestigial organs? Give one example
• Define genetic drift and give its effects.
• Write down the measures for the preservation or endangered species.

3. Answer briefly any Eight parts from the followings:. (8 x2=16)

• What are the commercial application of Ethene?
• Differentiate between chemoreceptors and mechanoreceptors.
• Define Resting Membrane Potential?
• Differentiate between Time Culturing and cloning.
• What do you mean by menopause?
• Define Lactation.
• Define Biotechnology.
• What are transgenic organisms?
• Where the Desert Ecosystems are located in Pakistan?
• What do you mean by Taiga?
• What is Nuclear Energy?
• What do you mean by population pressure?

3. Answer briefly any Six parts from the followings:. (6 x2=12)

• Define promater.
• What is Central Dogma?
• What is Nucleosome?
• Define Law of independent Assortment.
• Explain over Dominance.
• What is Bombay phenotype?
• Differentiate between population and community.
• What arr Decomposers?
• Differentiate between Hydrosere and Xerosere.

Section –11

Note: Attempt any three questions. (8 x3=24)
Question#5
(a)Discuss kidney problems and their cures.
(b)Briefly describe sources of Energy.

Question#6
(a)Explain Sliding filament model.
(b)Write a note on endangered species.

Question#7
(a) Give an account of Grazing.
(b) Discuss role of hormones secreted by anterior lobe of pituitary gland.

Question#8
(a) Define Parthenogenesis. Explain briefly different kinds of Parthenogenesis.
(b) Explain Chemical Nature of DNA.

Question#9
(a) Explain how the growth rate is influenced by external factors.
(b) Define and explain test cross.

Section III
(Practical)

Note :Attempt any three questions. (3 x 5=15 )
(A) Sketch and label the Nervous system of cockroach.
(B) Sketch and label the diagram of pectoral girdle of Frog.
(C) Write down the procedure to study phototropism in Plants.
(D) Write an experiment to study the water contents of a given soil sample.
(i) From which side cockroach is dissected any why?
(ii) What is test cross?
(iii) What is significance of using ringer's solution?
(iv) How soil is formed.
(E) Point out the effect pf Anxins on Plant