Intermediate Part-I
(Multan)
Biology Objective
Time allowed:20mint
Maximum Marks:17
Note: You have four choices for each objective type question as A,B,C,D . Fill the correct circle in front of that question number. Use marker or pen. Cutting or filing two or more circle will result in that zero marks.

Question#1

• Tentative explanation of the observation is called
  
  (a) hypothesis
  (b) deduction
  (c) theory
  (d) Law
  
  
• _______ is an unsaturated fatty acid.
  
  (a) acetic acid
  (b) butyric acid
  (c) oleic acid
  (d) palmitic acid
  
  
• The loosely attatched non protein part are.
  
  (a) activator
  (b) prosthetic group
  (c) scoenzyme
  (d) substrate
  
  
• Lysosomes were discovered by :
  
  (a) sanger
  (b) palade
  (c) de duve
  (d) brown
  
  
• Mad Cow disease is caused by :
  
  (a) virus
  (b) prion
  (c) bacteria
  (d) fungi
  
  
• Structure involved in DNA replication in Bacteria
  
  (a) ribosomes
  (b) cell membrane
  (c) plasmid
  (d) measosomes
  
  
• The shells of actinopods are made up of:
  
  (a) silica
  (b) caco₃
  (c) sponging fiber
  (d) NaHCO₃
  
  
• ________ are poisonous fungi.
  
  (a) Morels
  (b) truffles
  (c) toadstools
  (d) rust
  
  
• The first actions spectrum was obtained by:
  
  (a) calvin
  (b) krebs
  (c) van neils
  (d) t.w.Engelmann
  
  
• the pH of fesh chime in stomach is:
  
  (a) 1:00
  (b) 3:00
  (c) 4:00
  (d) 5:00
  
  
• Respiratory organs in fishes are
  
  (a) lungs
  (b) air sac
  (c) gills
  (d) trachea
  
  
• The presence of excessive fluid in the tissue is:
  
  (A) thalassaemia
  (b) oedema
  (c) leucaemia
  (d) splenomegaly
  
  
• ______ is the largest artery.
  
  (a) coronary
  (b) aorta
  (c) Iliac
  (d) vena cava
  
  
• The seed of plants used as blood purifier are:
  
  (a) Hypogea
  (b) abrus
  (c) dalbergia
  (d) clitoria
  
  
• The leaves of plants used as blood purifier are:
  
  (a) acacia nilotica
  (b) albizzia lebbek
  (c) nephiridia
  (d) nephron
  
  
• The excretory system of arthopods is composed of :
  
  (a) malpighian trubules
  (b) flame cell
  (c) nephridia
  (d) nephron
  
  
• ________ is called shiptown.
  
  (a) slug
  (b) teredo
  (c) loligo
  (d) sepia

Subjective
Time allowed:3.10 hour
Marks :83
Note: Write same question number and its part number on answer book, as given in the question paper.
Section-I

2.Attempt any eight parts.

• Define Molecular Biology
• What do you mean by Hypthesis and law ?
• What are Waxes”?
• Differentiate between competitive inhibitors and non-competitive inhibitors.
• What is cofactor and prosthetic group ?
• How does Enzyme concentration affect the rate of Enzyme action ?
• What are choanoflagellates ? Give example.
• What are water molds ?
• Give any two characters of ciliates.
• What are green algae ? Give its importance.
• What is Nuclear Mitoses ?
• Define Mycorrhizae. Give its types.

3. Attempt any eight parts.

• What are storage diseases ? give two example.
• How is the cell wall of prokaryotes different from that of Eukaryotes ?
• Differenciate between polyps and medulsae.
• Compare ostia ad Osculum.
• What is Haemocynin ? Which animal group does this possess ?
• what is marsupium ? What role it play ?
• Name accessory pigments. Give their two role
• differentiate between absorption spectrum and action spectrum.
• List the properties of respiratory surfaces in animals.
• give three major reactions of photorespiration.
• How are the lungs of birds different from that of other vertebrates ?
• Compare the concentration of Co2 in arterial and Venous blood.

4. Attempt any six parts.

• What are obligate intracellular parasites ?
• Differentiate between spores and cysts.
• What is double fertilization.
• write two significance of alteration of generation.
• Define Heart burn or pyrosis.
• How the gall stones are formed.
• What is the function of trypsin ?
• Distinguish between Osmotic potential and pressure potential.
• what is transpiration pull ?

Section-II
Note: Attempt any three questions of the following:

Question#5
(a) Describe the role of Biology in increasing food production.
(b) Describe life cycle of Adiantum.

Question#6

(a) What are proteins ? Classify them on the basis of their structure.
(b) Describe digestion in the stomach of man.

Question#7
(a) Describe the structure and function of mitochondria.
(b) What are the economis losses due to fungi ?

Question#8
(a) Describe the lysogenic cycle of bacteriophage
(b) Only sketch the krebs cycle.

Question#9
(a) Describe any eight functions of blood.
(b) Write a note on nutrition in bacteria.

Section-III
(Practical)

10. Attempt any three parts.

(A)(i) You are provided with iodine solution and sugar solution.Write biochemical test for its presence.
(ii) Write the name of two reducing sugars.
(B)(i) You are proved with (Rose) flower. Write the techinal terms to describe the following parts of the flower.
Calyx
corolla
androcium
(C) Define inflorescence.
(a) Draw the sketch and label the diagram of digestive system of frog.
(b)(i) Write the material and procedure for measuring the blood pressure during rest and after exercise.
(ii) Define blood pressure and diastolic blood pressure.
(D) Give one character of each to indentify the specimen.
(i) Ameoba
(ii) Volvox
(iii) Femal cone of pinus
(iv) Funaria male gametophyte
(v) T.s of monocot stem