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Lahore board


Lahore Board (Inter Part - 1) 2013 

Subject: Biology                   (Obj. Type)                      Paper-I  
 Total Marks: 17                     Group-11       Time Allowed: 20 Min . 
 Note: Four possible answers 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. Cutting or tilling two or more circles will result in zero mark in that question.

1-1 The number of chloroplast in each mesophyll cell is about: 
      (A) 10-100 (B) 10-200 (C) 20-100 (D) 20-200 
2-  The human stomach is situated below the :
      (A) Diaphragm (B) Liver (C) Kidneys (D) Spleen 
3-  Chitin is found in the cell wall of:
      (A) Algae (B) Bacteria (C) Fungi (D) Plants 
4- The number of air sacs in birds are : 
     (A) 6 (B) 7 (C) 8 (D) 9 
5-The most common rust fungi are : 
     (A) Ustilago (B) Puccinia (C) Penicillium (D) Yeast 
 6-Guttation occurs in plants through : 
     (A) Cuticle (B) Hydathodes (C) Lenticels (D) Stomata 
7-Which one of the following require low concentration of oxygen :    (A) E.Coli             (B) Spirochete 
     (C) Pseudomonas  (D) Campylobacter 
8- Which of the following atoms do not occur in carbohydrates : 
     (A) Carbon (B) Hydrogen (C) Oxygen (D) Nitrogen 
 9-The dark reaction occurs in : 
     (A) Cytoplasm (B) Chloroplast (C) Stroma (D) Grana 
10-Metamerically segmented animals belong to : 
     (A) Annelida (B) Cridaria (C) Mollusca (D) Echinodermata 
11- Pulses producing plants belong to the family : 
     (A) Rosaceae (B) Solanaceae (C) Fabaceae (D) Poaceae 
12-The optimum pH of pancreatic lipase is : 
     (A) 6.0 (B) 7.0 (C) 8.0 (D) 9.0 
13-Sleeping sickness is spread by : 
     (A) Tsetse fly (B) Trypanosoma (C) Mosquito (D) Plasmodium 
14- Foot and mouth disease is caused by : 
     (A) Algae (B) Bacteria (C) Fungi (D) Virus 
15. Mammals have evolved from reptilian ancestor: 
     (A) Archaeopteryx (B) Cotylosaurs (C) Crocodile (D)Tuatra 
16- The volume of dry seed may increase upto 200 times by:
      (A) Diffusion (B) Osmosis (C) Imbibition (D) Active transport 
 17- The percentage of phosphorus in the human body is : 
       (A) 1%         (B) 2%       (C) 3%        (D) 4% 

 Lahore Board (Inter Part - I) 2013 

Subject: Biology                   ( Sub.type)                  Paper-I           
 Total Marks: 83                     Group-II   TimeAllowed:3:10Hrs. 
     Write short answers to any EIGHT (8) questions : 16 
(i) Define biosphere.
(ii) Define - chemotherapy. Mention its disadvantage. 
(iii) Write down general formula of amino acid. 
(iv) Define holoenzyme. 
(v) State the effect of change in pH on activity of an enzyme. 
(vi) Differentiate between prosthetic group and co-enzyme. 
(vii) Describe briefly skeleton of sponges. 
(viii) What are gemmules and give their function? 
(ix) Write two adaptations for parasitic mode of life in 
(x) Describe briefly two harmful insects. 
(xi) Define active immunity. 
(xii) State the names of two types of leucocytes. 
      Write short answers to any EIGHT (8) questions : 16 
(i) Write down functions of cell wall and flagePa in bacterial cell. (ii) Write down similarities and differences between fungi and fungus like protists. 
(iii) Write down two characteristics of apicomplexans. 
(iv) Write down two benefits each of algae and fungi. 
(v) Write down two characteristics of ciliates.  
(vi) What advance characters are found in the sporophyte of 
(vii) Enlist botanical names of four genra of family poaceae. 
(viii) Define chemiosmosis. 
(ix) Differentiate between alcoholic fermentation and lactic acid 
(x) What is dyspepsia? 
(xi) Differentiate between secretin and gastrin. 
(xii) What are ingredients of gastric juice? 4- 
       Write short answers to any SIX (6) questions : 12 
(i) Give the functional differences between Sclerenchymatous 
     and Parenchymatous cells. 
(ii) What is differentially,permeable membrane? 
(iii) What is binomial nomenclature? 
(iv) Differentiate between Lichens and Mycorrhizae. 
(v) What do you know about the term Haustoria? 
(vi) What is Operculum? 
(vii) Define the term photorespiration. 
(viii) What is cutaneous respiration? 
(ix) What do you know about diving reflex? 
                                  SECTION - II 
Note: Attempt any THREE questions. 
5- (a) Describe biological organization at organ and system
    level. (4) 
    (b) Write a note on cytoskeleton. (4)
6- (a) Explain different types of RNAs. (4) 
    (b) List functions of blood (any eight). (4 )
7- (a) Describe Linnaeus System of Binomial Nomenclature in   
         detail. (4 )
    (b) Describe -life cycle of loose smut of wheat with the help of 
         diagram. (4 )
8- (a) Discuss nutrition in bacteria. (4 )
    (b) Describe cyclic phosphorylation with the help of a 
         diagram. (4)
9- (a) Describe the role of pancreas and liver in food digestion in  
         human. (4) 
    (b) Describe different steps involved in the evolution of 
         Megaphyll. (4)  
                                   SECTION - III 
                                 (Practical Part) 
Note: Attempt any THREE questions. 
 A- (a) You are provided with egg albumen and Millon's 
           reagent. Write biochemical test for the substance which 
            egg albumen contain. (3) 
      (b) Name the reagents used to detect reducing sugars 
            and starch. 
B-   (a) You are provided with flower of solanum nigrum. 
            Describe in technical terms its parts, 
           (i) Calyx, (ii) Androecium. (iii) Gynoecium    (3) 
      (b) Differentiate between complete and incomplete flower. (2) C-   Sketch and label the diagram of digestive system of 
       cockroach. (5)
D-   (a) Write procedure to study the effect of temperature on 
          activity of enzyme (pepsin).    (3)
       (b) What is difference between enzyme and substrate? (2)
E- You are provided following specimen. Give one character 
     for each to identify : 
    (i) Chlorella. (ii) Amoeba.(iii) Male Marchantia Euglena
    (v) T.S. of Dicot Stem.    (5)

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