Biology
Lahore Board 2015
Inter Part-I Group-I
Time:20 Min
Objective Type
Marks=17
Note: four possible answer  A,B,C and D to each question are given. the choice which you think is correct,fill that circle in front of that question with marker or pen ink in the answer- book.cutting or filling with two or more circles will result in zero mark in that question.

Q.1

• A large regional cimmunity primarily determined by:
  
  (a) Biomass
  (b) Biosphere
  (c) Biome
  (d) Population
  
  
• Most of cellular secretions are in nature:
  
  (a) Proteins
  (b) Lipids
  (c) Larbohydrates
  (d) Glycoproteins
  
  
• Induced fit model was proposed by:
  
  (a) Emil fischer
  (b) Koshland
  (c) Jenner
  (d) Pasteur
  
  
• The resolution of typical compound microscope is:
  
  (a) 0.04m
  (b) 2.04m
  (c) 3.04m
  (d) 4.04m
  
  
• Organelle of symbotic origin is:
  
  (a) Cell wall
  (b) Cell membrane
  (c) Mitochondria
  (d) Vacuole
  
  
• Pili are made of special protein called:
  
  (a) Pillin
  (b) Flagellin
  (c) Tubulin
  (d) Myosin
  
  
• The causative agent of African sleeping sickness is:
  
  (a) Tsetse fly
  (b) Mosquito
  (c) Trypanosoma
  (d) Trichonympha
  
  
• The most common rust fungi are:
  
  (a) Ustilago
  (b) Puccinia
  (c) Penicillium
  (d) Yeast
  
  
• Pulse producing plants are peloning to thev family:
  
  (a) Rosaceae
  (b) Solanaceae
  (c) Fabaceae
  (d) Poaceae
  
  
• Blood of arthropods is:
  
  (a) Green color
  (b) Red color
  (c) Brown color
  (d) Colorless
  
  
• Ancylostoma duodenale is biological name of:
  
  (a) Flatworm
  (b) Tapeworm
  (c) Roundworm
  (d) Fluke
  
  
• In respiratory chain NADHis oxidized by:
  
  (a) Co-factor
  (b) Co-enzyme
  (c) Cytochrome “b”
  (d) Cytochrome “c”
  
  
• The number of chloroplast in each mesophyll cell is about :
  
  (a) 10__100
  (b) 10__200
  (c) 20__100
  (d) 20__200
  
  
• Certain types of whales are also:
  
  (a) Detritivores
  (b) Fluid feeders
  (c) Omnivores
  (d) Filters feeders
  
  
• How much air lungs can hold when they are fully inflated:
  
  (a) 5 litres
  (b) 4 litres
  (c) 4.5 litres
  (d) 3.5 litres
  
  
• Casparian strips are present incells of root:
  
  (a) Cortex
  (b) Epidermis
  (c) Endodermis
  (d) Phloem
  
  
• The cells which supply ATP and proteins to sieve tubs are:
  
  (a) Companion
  (b) Epidermal
  (c) Tracheids
  (d) Vessels

Biology
Lahore Board 2015
Inter Part-I
Group-I
Time:3.10 hrs
Essay Type
Marks=83

SECTION – I

2. Write short answers to any eight questions :( 16)

• What is phyletic lineage?
• Define theory. Give important features of a good theory?
• Sketch structures of ribofuranose and glucopyranose?
• Differentiate between apoenzyme and holoenzyme?
• Define enzyme inhibitors.give its two types?
• What ois induce fit model of enzyme?
• Sketch and label diagram of becteriophage?
• What isa periplasmic space?in which bacteria it is present?
• Define lichens. Give their significance?
• Differentiate between plasmogamy and karyogamy?
• Give common name of adiantum?
• Define double fertilization in angiosperms?
  

3. Write short answers to any eight questions :( 16)

• What are storage diseases?give an example?
• Give important function of cytoplasm?
• What are red tides?
• What is importance of trochonymphas?
• What was the infamous role played by the phytophathora infestants in human history?
• How algae differ from plants?
• What are accessory pigments?give their one importance?
• Define photosynthesis with the help of equation?
• What is polymorphism?give example.
• Differentiate between sac-like and tube-like digestive systems?
• What are cnidocytes?
• What is metamorphosis?

4. Write short answers to any SIX questions :( 12)

• What is chlorosis?name two elements.
• Whose deficiency cause chlorosis?
• What is filter feeding?
• What is photorespiration?
• Differentiate between pulmonary resp[iration and cutaneous respiration?
• What are parabronchi?
• What is respiratory distress syndrome?
• What is pressure potential?
• What are blue babies?

SECTION – II

Note: Attempt any three questions.

Question#5
(a) Explain any three steps in biological mehod .(4)
(b) Explain taxonomic status of fungi.(4)

Question#6
(a) Write a note on glyoxysomes. (4)
(b) Describe the detail cyclic photophosphorylation. (4)

Question#7
(a) Discuss the life cycle of phage inside bacterial cells. (4)
(b) Explain the processes of digestion in amoeba. (4)

Question#8
(a) Describe importance of H2O in living organisms. (4)
(b) What is alternation of generations?give its sig nificance. (4)

Question#9
(a) Discuss growth and reproduction in bacteria? (4)
(b) Give functions of lymphatic system? (4)

SECTION – III (practical part)

Note: Attempt any three questions.

A.(i) You are provided with a solution and solution of iodine.write down biochemical test for the substance present in it.(3)
(ii) What are monosaccharides?give an example.(2)
B.(i) You are provided with the flower “lathyrus odoratus”.describe in technical terms.
(a) calyx  (b) corolla   (c) gynoecium   (3)
(ii) Differentiate between perfect and imperfect flower.(2)
C. Sketch and labelthe diagestive system of frog.(5)
D.(i) Write down the procedure for investigating the effect of temperature of enzyme activity.(pepsin) (3)
(ii) What is optimum temperature of enzyme activity?(2)
E.(i) You are provided following specimens.give one reason to identify each:
(i) Pinus male cone (ii) chlorella    (iii) volvox   (iv) euglena   (v) T.S of dicot stem  (5)

Biology
Lahore Board 2015
Inter Part-I
Group-II
Time:20 Min
Objective Type
Marks=17
Note: four possible answer  A,B,C and D to each question are given.the choice which you think is correct,fill that circle in front of that question with marker or pen ink in the answer- book.cutting or filling with two or more cilrcles will result in zero mark in that question.

Q.1

• In 1997 ,scientists inscotland succeeded in cloning a ;
  
  (a) Sheep
  (b) Horse
  (c) Goat
  (d) Cow
  
  
• Phosphatidylcholine is one of the common:
  
  (a) Phospholipids
  (b) Sphingolipid
  (c) Glycolipid
  (d) Terpenoid
  
  
• According to lock andkey model,thev active site is :
  (a) Soft structure
  (b) Flexible structure
  (c) Attractive structure
  (d) Rigid structure
  
  
• A group of ribosomes attached to mRNA are known as :
  
  (a) Lysosomes
  (b) Polysomes
  (c) Glyoxisomes
  (a) Peroxisomes
  
  
• Mad cow disease is caused by:
  
  (a) Virus
  (b) Bacteria
  (c) Prions
  (d) Fungus
  
  
• A bacteria with single polar flagellum is called:
  
  (a) Atrichous
  (b) Monotrichous
  (c) Lophotrichous
  (d) Amphitrichous
  
  
• An outer flexible coveriong of ciliates is :
  
  (a) Sheath
  (b) Cuticle
  (c) Cell wall
  (d) Pellicle
  
  
• Poisonous mushrooms are called:
  
  (a) Truffles
  (b) Morels
  (c) Toad stools
  (d) Agericus
  
  
• Double fertilization is a characteristics of :
  
  (a) Bryophytes
  (b) Gymnosperms
  (c) Masses
  (d) Angiosperms
  
  
• Marsupium is the characteristic feature of :
  
  (a) Opossum
  (b) Echnida
  (c) Dolphin
  (d) Duck bill platypus
  
  
• Polymorphism is the characteristic of members of phylum:
  
  (a) Porifera
  (b) Cnidaria
  (c) Annelida
  (d) Arthropoda
  
  
• Qualitative study of energy relationship in biological system is called:
  
  (a) Bioenergetics
  (b) Biosynthesis
  (c) Biodegradation
  (d) Biotechnology
  
  
• Important source of atmosphericoxygen released during photosynthesis is:
  
  (a) Glucose
  (b) Nitrates
  (c) Water
  (d) Carbon dioxide
  
  
• A neurotic disorder is slightly older girl is :
  
  (a) Anorexia nervosa
  (b) Bulimia nervosa
  (c) Dyspepsia
  (d) Dobesity
  
  
• Lungs of birds have thin walled ducts called:
  
  (a) Alveoli
  (b) Trachea
  (c) Bronchi
  (d) Parabronchi
  
  
• The renal vein brings the impure blood from:
  
  (a) Brain
  (b) Kidney
  (c) Lungs
  (d) Liver
  
  
• The uncontrolled production of white blood cells result in:
  
  (a) Leuceamia
  (b) Thalassaemia
  (c) Oedema
  (d) Asthma

Biology
Lahore Board 2015
Inter Part-I
Group-II
Time:3.10 hrs
Essay Type
Marks=83

SECTION – I

2. Write short answers to any eight questions :( 16)

• Define population,give its two example?
• What is detuctive reasoning ?give one example.
• Give difference between saturated and unsaturared fatty acid?
• Give difference between prosthetic group and activator?
• What is optimum pH?give one example.
• Define inhibitor of enzyme..give example?
• State lock and key model?
• Define species and virology?
• Name three general shapes of bacteria and explain only one?
• What are septate and non septate hyphae?
• What do you mean by budding and parasexuality?
• Why pryophyte are called amphibious plants?

3. Write short answers to any eight questions :( 16)

• What are piroxisomes?
• What are chromoplasts?give function.
• What are apicomplexans?give one example.
• Write down the two characteristics of ciliates?
• What are choanoflagellates?
• What are diatoms?
• Give two characteristics of deuterostomes?
• Define polymorphism.give example?
• Name two hemichordates?
• Differentiate between radial and bilateral symmetry?
• What is fermentation?give its two types.
• What are accessory pigments in plants?give their functions.

4. Write short answers to any SIX questions :( 12)

• State pressure flow theory.who proposed it first?
• Differentiate between single and double circuit heart?
• What is rubisco?give its function.
• How exhalation and inhalation do occur in cockroach?
• What are alveoli?give their function.
• Define respiratory surface.give their properties?
• What are insectivorous plants? How they get their carbohydrates?
• Give name of hormones secreted by digestive system(Gut) ?
  
• What is detritus feeding?give example.
  

SECTION – II

Note: Attempt any three questions.

Question#5
(a) Describe the biological organization at organelles and cell level.(4)
(b) Explain economic losses due to fungi. (4)

Question#6
(a) Write a note on ribosomes. (4)
(b) Briefly the describe steps involved in the non-cyclic phosphorylation? (4)

Question#7
(a) What is AIDS?how is it transmitted? (4)
(b) Describe the role of large intestine? (4)

Question#8
(a) Describe any four properties of water? (4)
(b) Write main steps of evolution of megaphyll leaf? (4)

Question#9
(a) Describe indetail nutrition of bacreria? (4)
(b) Why transpirationis necessary evil? (4)

SECTION – III (practical part)

Note: Attempt any three questions.

A.(i) Give procedures,observations and results during sudan III test?(3)
(ii) What are saturated and unsaturated fats?(2)
B.(i) Write down technical terms for flower or rose (3)
(a) Inflorescence   (b) Androecium      (c) Gynoecium
(ii) What is a complete flower?give an example.(2)
C.Draw a labelled diagram to show the digestive system of frog?(5)
D.  (i) Write procedure,observations and results in experiment to show the effect of temperature on the activity of pepsin.(3)
(ii) What conditions are necessary for digestion of egg white in experiment?(2)
E.Give reasons of identification for the following specimens:                (5)
(i) Volvox  
(ii) Nostoc  
(iii) Chlorella
(iv) Fern prothallus  
(v) T.S of bifacial leaf