BAHAWALPUR Board 2012
Inter Part II
Paper Objective Type
Time: 20 Minute
Max. Marks:17
Note: Four possible choices A, B, C, and D to each question are given. Which choice is correct; fill that circle in front of that question number. Use marker or pen to fill the circle, cutting two or more will result in zero in that question.

Question#1

1. The removal of Nitrogenous wastes that requires less amount of water is:
   
   (a) Urea
   (b) Ammonia
   (c) Uric Acid
   (d) Lactic Acid

2. One of these detect changes in the environment of the animal:
   
   (a) Effectors
   (b) Receptors
   (c) Neurons
   (d) Muscies

3. The incidence of Calcium oxlate stones in kidney are:
   
   (a) 50%
   (b) 70%
   (c) 89%
   (d) 90%

4. The stomata are located on the upper surface only in:
   
   (a) Xerophytes
   (b) Hydrophytes
   (c) Mesophytes
   (d) Epiphytes

5. It delays riopening and improve storage life of fruits:
   
   (a) Gibberellins
   (b) Cytokinins
   (c) Ethene
   (d) Abscisic Acid

6. Gonorrhoa is caused by a:
   
   (a) Neisseria
   (b) Pallidum
   (c) Herpes simplex
   (d) Clostridum

7. Tomato and cucumber are examples of:
   
   (a) Short Day Plants
   (b) long day Plants
   (c) Day Neutral
   (d) None of these

8. The growth movements are of:
   
   (a) Two types
   (b) Three types
   (c) Four types
   (d) Five types

9. The optimum temperature for maximum growth of plants is:
   
   (a) 20-25⁰C
   (b) 25-30⁰C
   (c) 30-35⁰C
   (d) 35-40⁰C

10. The spindle fibers are composed of R.N.A and a protien:
    
    (a) Actin
    (b) Myosin
    (c) Tubulin
    (d) Insuline

11. The total chromosomal complement of a cell and a protien:
    
    (a) Pheno type
    (b) Karyo type
    (c) Eistasis
    (d) Metastasis

12. Henbane and cabbage are the examples of :
    
    (a) Short day
    (b) Long day
    (c) Day neutral plants
    (d) Ever green

13. The sex chromosomes were discovered by :
    
    (a) Sutton
    (b) Morgan
    (c) jordan
    (d) Correns

14. The whole of the worlds land is called :
    
    (a) Ecosphere
    (b) Lithosphere
    (c) Biosphere
    (d) Hygrosphere

15. Limnetic phytoplankton includes the:
    
    (a) Bacteria
    (b) Algae
    (c) Mosses
    (d) Cyanobacteria

16. Cystic fibours patients lack a gene that codes for transmembrane carrier of:
    
    (a) Sulphate lons
    (b) Carbonate lons
    (c) Chloride lons
    (d) Bromide lons

17. The vermiform appendix is a vestigial organ in:
    
    (a) Carnivores
    (b) Frugivores
    (c) Herbivores
    (d) Omnivores

BAHAWALPUR Board 2012
Paper Subjective Type
Time: 2:40 Hours
Max. Marks:68
Note: Section I is compulsory. Attempt ant three (3) questions from Section II and any three (3) parts Section-I from Section III.

2. Write Eight short answers:

• Differentiate between osmoconformers and osmoregulators.
• Define urea cycle.
• Explain briefly glomerular filtrate.
• Write down the function of heartwood.
• Write down the mechanism of rapid movement of Leaflets.
• What are the different types of cartilage?
• Define salutatory impulse.
• Write down the actions of glueagon.
• Give two characteristic of hormones.
• Define seed dormancy.
• Why seeds plants are predominantly present all round us?
• Define labour pain.

3. Write Eight short answers:

• Differentiate between Homozygous and Heterozygous.
• Define sex influence trait.
• Define Allele and multiple allele.
• Define with examples homologous and analogous organs.
• Define species.
• Define hardy Weinberg theorem.
• Differentiate between synccology and autccology.
• Define biosphere.
• Define predation. What is its significance?
• Define eutrophication (Algae Bloom).
• Define three important of forest.
• Define green house effect.

4. Answers Six questions.

• Define blastocoel and neurocoel.
• Define grey crescent. Give its significance also.
• Define beading strand and lagging strand.
• What is the genetic cause of alkaptoonuria?
• Define transcription and translation.
• What do you mean by metastasis?
• Define P.C.R.
• What is the significance of copepod.
• Name four major ecosystem in Pakistan.

PART-II

Question#5
(a) Describe Locomotion in Paramecium. 4
(b) Explain Lamarck’s Theory of Evolution. 4

Question#6
(a) Discuss Excretion in plants. 4
(b) Describe inheritance of Haemophilia. 4

Question#7
(a) What is parthenogenesis? Describe its types. 4
(b) What are cause and effects of Acid Rain? 4

Question#8
(a) Write a note on thyroid gland. 4
(b) Compare Mitosis with Meiosis. Describe the importance of Mitosis. 4

Question#9
(a) How would you prove that D.N.A replicates by Semi conservative method. 4
(b) Describe the flow of energy in an ecosystem. 4