Biology
Lahore Board 2016
Inter Part-II
Group-I
Time: 20 min
Objective
Marks = 17

Q.1

• A central role for chromosomes in heredity was first suggested in 1900 by
  
  (a) Karl correns
  (b) W.S. Sutton
  (c) T.H. Morgan
  (d) F. Griffiths
  
  
• Archaebacteria can tolerate high temperatures upto
  
  (a) 120° C
  (b) 140º C
  (c) 160° C
  (d) 180° C
  
  
• Movement shown by sperms of liverworts, mosses, ferns towards archegonia is a
  
  (a) Chemotactic movement
  (b) Phototactic movement
  (c) Chemotropic movement
  (d) Phototropic movement
  
  
• In xerosere , polytrichum and tortula represent
  
  (a) Herbaceous (plant) stage
  (b) Moss stage
  (c) Foliage lichen stage
  (d) Crustose lichen stage
  
  
• The microtubules of mitotic apparatus are composed of protein tubulin and traces of
  
  (a) RNA
  (b) DNA
  (c) Fats
  (d) Glycerol
  
  
• Phytoplanktons are drifting
  
  (a) Plants
  (b) Animals
  (c) Protozoa
  (d) Crustaceons
  
  
• Effect of photoperiodism was first studied in 1920 by
  
  (a) Garner
  (b) Allard
  (c) Garner and allard
  (d) Charls lyell
  
  
• The incidence of calcium oxalate type stones are
  
  (a) 20%
  (b) 40%
  (c) 70%
  (d) 80%
  
  
• RH blood group system is named after its
  
  (a) Discoverer
  (b) Rhesus monkey
  (c) A patient
  (d) Rhinoceros
  
  
• Tap polymerase is an enzyme present in
  
  (a) Fungi
  (b) Bacteria
  (c) Algae
  (d) Virus
  
  
• Microscopic gap between the two neurons is called as
  
  (a) Synapsis
  (b) Synapse
  (c) Collapse
  (d) Preapse
  
  
• Which of the following cells have angular thickening in their primery walls
  
  (a) Collenchyma
  (b) Sclerenchyma
  (c) Fibers
  (d) 120 minutes
  
  
• Length of cell cycle in yeast cells is
  
  (a) 30 minutes
  (b) 60 minutes
  (c) 90 minutes
  (d) 120 minutes
  
  
• Parthenocarpy is sometimes artificially induced in tomato , peppers etc by adding
  
  (a) Absisic acid
  (b) Cytokinins
  (c) Auxins
  (d) Gibberellins
  
  
• The mossodermal cells do not invaginate but migrate medially and caudally  from both sides and create a midline thickening  called
  
  (a) Hensen’s node
  (b) Primitive streak
  (c) Epiblast
  (d) Hypoblast
  
  
• Alzheimer disease is
  
  (a) Physical illness
  (b) Mental illness
  (c) Renal illness
  (d) Pulmonary illness
  
  
• 1 g of ammonia nitrogen requires how much water for excretion
  
  (a) 50ml
  (b) 100ml
  (c) 250ml
  (d) 500ml

Biology
Lahore Board 2016
Inter Part-II
Group-I
Time: 3:10 hrs
Essay Type
Marks = 68

SECTION – I

2.Write short answer any Eight (8) questions: 16

• What are heat shock proteins?
• What is hypertonic environment and what changes occur in a cell in such environment?
• Differentiate afferent efferent artierioles
• Differentiate between hyaline and fibro cartilage.
• What is sciatica and its cases?
• Differentiate between effective and recovery stroke.
• Differentiate growth and development.
• What are the internal factors which effect the process of growth?
• What changes occur in a cell during apoptosis?
• Write the symptoms of Down’s Syndrome.
• Define Hardy Weinberg’s theorem.
• Hat are vestigial organs? Give two examples.

3.Write short notes on any EIGHT (8) questions: 16

• Define Apomixes.
• What is after birth?
• Differentiate between oogenesis and spermatogenesis .
• Give role of hypothalamus as endocrine gland.
• Name only type of innate behaviour ,
• Draw and label sensory neuron.
• Give three possible ways to get the gene of interest .
• Give wo goals of human genome project.
• Name four common features to aquatic ecosystem.
• Name two factors which influence life on land.
• Define soil and give its basic constituents.
• How we can save energy .

 4 .Write shoat answers to any six (6) questions: 12.

• Define euchromatin.
• What is transformation?
• Sketch phosphodiester bond.
• What is allele and gene?
• Define homozygous and heterozygous.
• What is true breeding variety?
• Define ecosystem.
• What is biosphere.
• What is MODY?

SECTION –II
Note: Attempt any THREE questions.

Question#5
(a) What is endoskeleton? Describe bone and cartilage.
(b) Write note on deforestation and afforestation.

Question#6
(a) Elaborate some major function s of the skeletal system.
(b) Explain endosymbiont hypothesis for the origin of eukaryotic cells.

Question#7
(a) Nervous system of hydra is better developed than that of planaria. Discuss.
(b) Define the following terms:
(i) Habitat
(ii) Niche
(iii) Food web
(iv) Climax community

Question#8
(a) Explain sexually transmitted diseases with the help of examples .
(b) Sketch DNA replications fork and label, (no description)

Question#9
(a) Write a note in aging.
(b) Discuss genetics of colour blindness.

SECTION –III (Practical Part)
Note: Attempt any THREE questions.

• Sketch and label nervous system of cockoach
• Draw and label forelimb of frog.
• Write down the producer to study the phototropism. Also record observations and results.
• Write down the producer to investigate about a food web
• Write the short answers of the following questions
• Define neutron
• Define muscle
• What is primitive streak?
• What is mitotic apparatus?
• What is Bivalent or Tetrad?

Biology
Lahore Board 2016
Inter Part-II
Group-II
Time: 20 min
Objective
Marks = 17

Note: Four possible answers A. B, C and D to each question are given, the choice which you think i correct, fill that circle in front of that question. With Marker or Pen ink [ri the answer-book. Cut6n.g or filling two or more c i rules will resuit in zero mark In that question.

• Contractile vacuoles are found in
  
  (A) Plants
  (B) Fresh water_ protozoal
  (C) Terrestrial animals
  (D) Marine plants
  
  
• Urine leaves the kidney through a duct called;
  
  (A) Urethra
  (B)  Pelvis
  (C) Ureter
  (D) Nlephron
  
  
• Bundle caps in. sunflower stem  are formed by :
  
  (A) Sclerenchyrra
  (B) Parenchyma
  (C) Mesenchyrna
  (D) Collenchyrina
  
  
• Which of the following is a bone of axial s.ketertori
  
  (A) Humerus
  (B) Femur
  (c) Tibia                      
  (D) Rib
  
  
• Nissl's granules are groups of:
  
  (A) Mesosomes 
  (B) Lysosornes
  (C) Ribosomes
  (D) Chromosomes the following is a type
  
  
• Which one of the following is a type of asexual reproduction
  
  (A) Fertilization      
  (B) Apomixes
  (C) Apomixes          
  (D) photoperiodism
  
  
• Towards the end progesterone level, produce the reduction in the progestin level, stimules pitutiry glad to produce.
  
  (A) Oxytocin
  (B) Androgen
  (C) Androgen          
  (D) Prolactin
  
  
• The plant hormone shoots that inhibit the growth of lateral shoot:
  
  (A) Cytokinin
  (B) Gibberellin
  (C)Auxin                    
  (D) Ethene
  
  
• Which of the following is the “start” codon:
  
  (A) AUG                     
  (B) UAA
  (C) UAG
  (D) UGA
  
  
• In which stage  of prophase-1. crossing over occurs:
  
  (A) Leptotene.
  (B) Zygotene
  (C) Pachytene
  (D) Diplotene
  
  
• For the formation of fragmoplast,  the vesicles originate from
  
  (A) Endoplasnnic reticulurns
  (B) Golgi complex
  (C) Chloroplast                      
  (D) Mitochondria
  
  
• The gene that triggers developmental process towards rnaleness, is :
  
  (A) Tmf                       
  (B) SRY
  (C) MODY               
  (D) BOB
  
  
• Thermos aquaticus is a / an :
  
  (A) Fungus       
  (B) Protozoa
  (C) Alag      .     
  (D) Bacterium
  
  
• A group of inter-breeding individuals, belonging to same species and sharing a common gen-graphic area, is called:
  
  (A) Community          
  (B) Biome
  (C) Population            
  (D) Ecosystem
  
  
• Lichens are an example of:.
  
  (A) Parasitism          
  (B) Militarism
  (C) Predation     
  (D) Commensalism
  
  
• Which of the following biomes is increased by human activities :
  
  (A) Grassland
  (B) Desert
  (C) Coniferous         
  (D) Savana
  
  
• Environmental buffer is a :
  (A) Desert               
  (B) Grassland
  (C) Communit
  (D) Forest

Biology
Lahore Board 2016
Inter Part-II  
Group-II
Time: 3:10 hrs
Essay Type
Marks = 83

SECTION-I

2 .Write short   answer any Eight (8) questions: 16

• Name the unpaired facial bones.
• Differentiate between osmoconformers and osmo-regulators.
• What is lithotripsy?
• Differentiate between photonasty and thermonasty.
• T are heat shock proteins?
• What is hematoma formation?
• What is discoidal cleavage?
• Differentiate between apical meristem and lateral meristem.
• What is mitotic apparatus ?
• What is metastasis?
• What are genetic drift?
• Name any four animals, declared extinct in Pakistan

3.Write short notes on any EIGHT (8) questions: 16

• Define diurnal rhythms. How are different form circannual rhythms?
• Write commercial applications of cytokinins
• What are effectors? Give their types.
• Describes Oestrous cycle.
• Differentiate beteen oviparous and viviparous animals.
• What is haploid parthenogenesis? Give one example.
• What are palindromic sequences? Give their significance.
• Define genomic library.
• Write down the types of living organisms foun in limnetic zone.
• Differentiate between climate and weather.
• Define renewable and non-renewable resource
• Write name of diseases caused due to nutritional deficiency.

 4. Write shoat answers to any six (6) questions: 12

• What is sickle cell anemia?
• What is heterochoromatin and auchromatin?
• What are Okazaki fragments?
• Names type of RNA.
• What is Bombay phenotype?
• What is MODY?
• What is predation? Give its significance.
• Define autecology with the helpof example .
• Define succession.

SECTION –II
Note: Attempt any THREE questions.

Question#5
(a) Discuss extraction in cockroach.
(b) Write a note in wild line.

Question#6
(a) Write note on human appendicular skeleton.
(b) Explain evolution from prokaryotes to eukaryotes.

Question#7
(a) What are receptors, describe their different types?
(b) Describe nitrogen cycle.

Question#8
(a) Write note on test tube babies and identical twins.
(b) What are chromosomes? What do you know about their types?

Question#9
(a) Write details  note on regberation.
(b) Define and explain Mendel’s Law segregation.

SECTION –III
(Practical Part)
Note: Attempt any THREE questions.

• Sketch and label nervous system of cockroach.
• Sketch and label pelvic girdle of frog. (dorsal view)
• Write down the producer to investigate soil texture.
• Draw and label the Hen’s egg.
• Write short answers of the following questions:
• What is different between positive and negative phototropism ?
• Difine muscle twitch.
• What is the role of auxins?
• What are polytene chromosomes ?
• Define peripheral nervous system.