BIOLOGY TIME: 20 MINUTES
 GROUP FIRST
MARKS: 17
OBJECTIVE
Time: 25 min
NOTE: you have four choices 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

• Largest consumer of electricity
  
  (A) Air conditioners
  (B) Industry
  (C) Refrigerators
  (D) Computer
  
  
• Most fragile of all biomes is
  
  (A) Grass land
  (B) Forest
  (C) Desert
  (D) Tundra
  
  
• Which one of the folio is a
  
  (A) Peat
  (B) Air
  (C) Natural Gas
  (D) Oil
  
  
• Ancestor of all life forms
  
  (A)Algae
  (B)Virus
  (C) Prokaryotes
  (D) Fungi
  
  
• Taq polymerase was isolated from
  
  (A) Viruses
  (B) Bacteria
  (C) Plants
  (D) Algae
  
  
• Genes for albinism is located on
  
  (A) X-chromosome
  (B) Y-chromosome
  (C) Chromosome no.11
  (D) Chromosome no.22
  
  
• Spore formation in plants is the product of
  
  (A) Zygote
  (B) Gametogenesis
  (C) Mitosis
  (D)Meiosis
  
  
• Basic structure of nucleic acids , was determined by
  
  (A) P.A Levene
  (B) Watson and crick
  (C) Wilkins
  (D) Ingram
  
  
• Which one is responsible for apical dominance
  
  (A) Water
  (B) Auxins
  (C) Ethene
  (D) Light
  
  
• Plant hormone , florigen is produced in
  
  (A) Flowers
  (B) Roots
  (C) Leaves
  (D) Stem
  
  
• The cells which nourish the sperm cells
  
  (A) Interstitial
  (B) Sertoli
  (C) Epidermis
  (D) Zygote
  
  
• Kohlar used chimpanzee to prove
  
  (A) Habituation
  (B) Imprinting
  (C) Insight learning
  (D) Latent learning
  
  
• Hormone inhibits hydrolysis of Glycogen in liver and muscles
  
  (A) Insulin
  (B) Glucagon
  (C) Cortisol
  (D) Secretin
  
  
• Outermost layer of exoskeleton Is
  
  (A) Procuticle
  (B) Epicuticle
  (C) Endocudcle
  (D) Exocuticle
  
  
• Structure formed by the fusion of posterior four vertebrae of the pelvic region
  
  (A) Coccyx
  (B) Sacrum
  (C) Pubis
  (D)Ischium
  
  
• Uric acid is produced from
  
  (A) Nitrates
  (B) Creatine
  (C) Nucleic acids
  (D) Amino acids
  
  
• Hag fishes are
  
  (A) Osmoregulators
  (B) Isotonic
  (C) Hydrophytes
  (D) Chondrocytes

BIOLOGY
GROUP FIRST
SUBJECTIVE
MARKS: 68
SECTION-II

2. Write short answers any Eight questions of the following 16

• Give measures to protect endangered species?
• Differentiate between Horne logous and Analogous organs ?
• Differentiate between food chain and food web
• What is mutual ism 7 Give i s examples
• Give commercial application is of Gibberellins
• What is imprinting?
• Differentiate between smooth and cardiac muscles
• What is rickets? Give its causes and cure
• Explain process of ecdysis
• Draw a metabolic pathway n urea cycle
• Differentiate osmoregulation front thermoregulation
• What do you know about pyrexia ?

3. Write short answers any Eight questions of the following 16

• What are test tube Babies?
• Differentiate between Oviparous and Viviparous animals
• Write down causes and symptoms of Gonorrhoa
• How does light influence the growth of plants?
• What is the role of cytokinins in apical dominance?
• What is gray crescent?
• What is karyotype? Give its role
• Define chromosomal theory of inheritance
• What are the adaptations of desert animals to conserve water?
• Give amount of rainfall in Gross land and Desert Ecosystems
• What is the importance of Ozone layer?
• Enlist the effects of Acid rain

4. Write short answers any Sin questions of the following 12

• State briefly the importance of mitosis
• Characterize heptotene stage of meiosis
• What do you know about mongolism?
• Define phenotype with example
• State co-dominance with example
• What is Rh factor? Why it s named so, also mention its discoverer
• What is the main role of me lecular carrier M Biotechnology?
• Define gene therapy?
• What is the role of a vector?

SECTION-II

Note: Attempt any Three questions from this section (8X3 =24)
Question#5
(a) Describe briefly the structure and function of human Nephron 4
(b) Describe experiment performed by vleselson and Stahl to evaluate Hypothesis of DNA replication 4

Question#6
(a) Define and explain the significance of secondary growth in plants 4
(b) Define chromosome. Explain briefly the composition of chromosome 4

Question#7
(a) Define neuron. Describe the structure of a neuron in detail 4
(b) Write a note on Bombay phenotype and Pleiotropy 4

Question#8
(a) What is Asexual reproduction. Explain with reference to parthenogenesis with its types and advantages 4
(b) What are non-renewable resources. Explain the types, uses and consecration of fossil fuels. Also discuss wind power as source energy 4

Question#9 
(a) Discuss the role of nucleus in development 4
(b) Describe any two different zone in the fresh water lake ecosystem 4

BIOLOGY GROUP SECOND
TIME: 20 MINUTES
MARKS: 17
OBJECTIVE
NOTE: You have four choices for each objective type question as A , B , C and D . The choice which you think is correct, fill that circle in 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 that question.

Question#1

• The major homeostatic function of liver is storage of
  (A) Bile
  (B) Glycogen
  (C) Urea
  (D) Albumin
  
  
• The protonephriduim is the excretory organ of
  
  (A) Amoeba
  (B) Hydra
  (C) Planaria
  (D) Earthworm
  
  
• The axial skeleton includes
  
  (A) Vertebrae
  (B) Pelvic girdle
  (C) Pectoral girdle
  (D) Limbs
  
  
• Rickets is caused by deficiency of
  
  (A) Vitamin A
  (B) Vitamin B
  (C) Vitamin C
  (D) Vitamin D
  
  
• The normal speed of nerve impulse in human is
  
  (A) 100 m/sec
  (B) 110 m/sec
  (C) 120 m/sec
  (D) 130 m/sec
  
  
• Which one of the following promotes fruit ripening
  
  (A) Auxins
  (B) Cytokinins
  (C) Gibberellins
  (D) Ehene
  
  
• Which of the following plant is day-neutral
  
  (A) Henbane
  (B) Cockle bur
  (C) Cabbage
  (D) Tomato
  
  
• The average loss of blood during and after birth is
  
  (A) 250 Cm³
  (B) 300 Cm³
  (C) 350 Cm³
  (D) 400 Cm³
  
  
• The germ layers are formed during
  
  (A) cleavage
  (B) Gastrulation
  (C) Organogenesis
  (D) Growth
  
  
• Highly Condensed portions of the chromation are called
  
  (A) Nucleosome
  (B) Hetero chromation
  (C) Euchromation
  (D) Polysome
  
  
• It is thelperiod of extensive metabolic activity
  
  (A) GI
  (B) S phase
  (C) G2 phase
  (D) GO phase
  
  
• ABO blood group system was discovered by
  
  (A) Mendel
  (B) K Landsteiner
  (C) Suton
  (D) Correns
  
  
• Aspartame is a
  
  (A) Monopeptide
  (B) Dipeptide
  (C) Tripeptide
  (D) Polypeptide
  
  
• Who published the essay on the " Principle of population"
  
  (A) Wallace
  (B) Lamarck
  (C) Malthus
  (D) Lyell
  
  
• They release chemicals elements as ions
  
  (A) Producers
  (B) Consumers
  (C) Decomposers
  (D) Carnivores
  
  
• Average rainfall in Desert ecosystem is
  
  (A) 10-20 inches
  (B) 30-40 inches
  (C) 50-60 inches
  (D) 70-80 inches
  
  
• The upper layer of earth's crust is called
  
  (A) Ecology
  (B) Topography
  (C) Soil
  (D) Synecology

MARKS 68
SUBJECTIVE
SECTION-I

2. Write short answers any Eight questions of the following 16

• Differentiate between cortical Nephron and Juxtarnedullary nephron
• Why leaves are called excretophores ?
• What are the Pyrogens ? Give their function
• Differentiate between photocactic and phototropic movement
• What is Cramp ? Give its causes
• What are disadvantages of exoskeleton ?
• Differentiate between etiolation and Chlorosis
• What are the commercial application of Auxins ?
• Define succession ? Name its types
• Differentiate between macronutrients from micro nutrients
• What do you mean by endosymbiont hypothesis?? Give example
• What are vestigial organs ? Give example

3. Write short answers any Eight questions of the following 16

• What are viviparous Animals ?
• Define ," Ovulation."
• (3) What is , " Genital Herpes ' "
• (4) Define ," Apical Dominance"
• (5) Differentiate between inhibitory and compensatory effects
• What is " Regeneration "
• Define ," Karyotype "
• Differentiate between Heterochromation and Euchromation
• Give four names of major Terrestrial Ecosystem in Pakistan
• What is Taiga?
• Define ," Biodiversity"
• Define " Eutrophication "

4. Write short answers any Six questions of the following

• What changes occur in dividing cell during zygotene ?
• Write about metastasis
• Give only cause of Down's syndrome and Kline felter syndrome
• Define pleiotropy. Give two examples
• Differentiate between genotype and phenotype
• What is test cross? Give its significance
• Give three possible ways to get the gene of interest
• How transgenic animals are developed?
• What are Palindromic sequences ?

SECTION-II

Note: Attempt any Three questions from this section (8 x 3=24)
Question#5
(a) Draw a labeled diagram and explain the thermostat function of hypothalamus in human Thermoregulation 4
(b) Explain the experiment of Hershey and Chase to prove DNA as hereditary material 4

Question#6
(a) Explain the process of repair of broken bones 4
(b) Describe necrosis and apoptosis in detail 4

Question#7
(a) What are biological clocks? How are they caused? Give their types 4
(b) What is Rh-factor? Describe its role in pregnancy and blood transfusion 4

Question#8
(a) Describe human female reproductive cycle 4
(b) Describe uses and misuses of agrochemicals 4

Question#9
(a) Define Aging ; Explain this process 4
(b) Describe three different zones in the Fresh water Lake ecosystem 4