Inter (Part-II)
Lahore Board 2012
Biology Paper 11
(Objective Type)
Time Allowed: 20 Minutes
Max. Marks: 17
(GROUP-1)
Note; Four answer are given against each question in columns A, B,C and D.Select the right answer and on the separate Answer Sheet, fill the circle A,B,C or D with pen or marker in front of that question number.

Question#1

• It is applied to Rubber plant to stimulate flow of Latex:
  
  (A) Abscisic acid
  (B) Gibberellin
  (C) Ethene
  (D) Auxin
  
  
• Polyhydroxy butyrate is called:
  
  (A) Antithrombin III
  (B) Nutraa Sweet
  (C) Biodegradable plastic
  (D) Luciferin
  
  
• Which one produced in excess then leads to abnormal development called acrornegaly:
  
  (A) TSH
  (B) ACTH
  (C) MSH
  (D) STH
  
  
• Individtial with Klinefelter's syndrome have sex chromosome as following:
  
  (A) XO
  (B) XXO
  (C) XXY
  (D) XXXY
  
  
• Major homeostatic function of liver is storage of:
  
  (A) Bile
  (B) Cholesterol
  (C) Urea
  (D) Iron
  
  
• Someites are formed and organized by:
  
  (A) Ectoderm
  (B) Mesoderm
  (C) Endoderm
  (D) Blastoderm
  
  
• it is not fossilized:
  
  (A) Lignite
  (B) Peat
  (C) Natural gas
  (D) Oil
  
  
• Essay of the principle of population was published by:
  
  (A) Darwin
  (B) Wallace
  (C) Linnaeus
  (D) Malthus
  
  
• Crustacean with a spiny projection on these planktonic creatures help to keep them from sinking:
  
  (A) Porpoise
  (B) Whale
  (C) Copepod
  (D) Bobcat
  
  
• Bat do not regulate body, temperature in narrow range is:
  
  (A) Endotherm
  (B) Hoeotherm
  (C) Heterotherm
  (D)Poikilotherm.
  
  
• Ovoviviparity is shown by:
  
  (A) Reptile
  (B) Bird
  (C) Duck bill platypus
  (D) Human
  
  
• A succulent plant have water stored in tissue:, n
  
  (A) Cacti
  (B) Moss
  (C) Yarrow
  (D) Spruce
  
  
• A gene starts with initiation codon, which encodes the amino acid methionine:_.
  
  (A) UAA
  (B) UAG
  (C) AUG
  (D) UGG
  
  
• Bobbed gene in Drosophila is present on:
  
  (A) X chromosome
  (B) Y chromosome
  (C) Both on X& Y
  (D) Autosome
  
  
• A bone which connects scapula with sternum:
  
  (A) Humerus
  (B) Ischium
  (C) Pubis
  (D) Clavicli
  
  
• Which one secretes liquid to protect and nourish sperm cells:
  
  (A) Corpus luteum
  (B) Sertoli cells
  (C) Placenta
  (D)Epididymis
  
  
• Action of Venus fly trap is an example of:
  
  (A) Nyctinasty
  (B) Haptonasty
  (C) Hyponasty
  (D)Photonasty

Inter (Part-II)
Lahore Board 2012
Biology Paper II (Essay Type)
Time Allowed: 2.40 Hours
Max. Marks: 68
(GROUP-1)
SECTION-I

2. Write short answers to any EIGHT (8) questions. 16

• Write structural formulae of area and uric acid.
• Differentiate between - xerophytes and mesophytes plants.
• What are poikilotherrrs? Give one example.
• Characterize collenchyrna cells.
• What is axial skeleton?-
• Define the process of ecdysis.
• What is difference between CNS and PNS?
• Explain imprinting.
• What is cpllepsy?
• How oestrous cycle is different from mentraul cycle.
• Define vernalisation.
• What are oviparous? give an example.

3. Write short answers to any EIGHT (8) questions. 16

• Define recombination frequency. Give its importance.
• Define linkage groups by giving example.
• How does ABO mcopatibality protect the developing baby against Rh-incompability?
• Give the concept of fixed alleles.
• Define genetic drift.
• Define homologous prgank by giving example.
• Define biogeochemical cycles.
• Give the significance of predation.
• Write brief note secondary succession.
• Give main causes of water pollution.
• Give importance of solid wastes.
• Describe abuses of land.

4. Write short answers to any SIX (6) questions I 2

• Differentiate between somatic and splanchnic mesoderm.
• State role of grey vegetal and grey equatorial cytoplasm.
• Enlist different shapes of chromosomes.
• What is the importance of a bivalent formation?
• State point mutation with example.
• Entist non-sense colons and their function.
• Give three possible-ways to get the gene of interest.
• Describe animal life Of grass land ecosystem.
• What is composition of air of terresirial ecosystem?

(SECTION - II)

Write Three Answers (8x3=24)
Question#5
(a) What are joints? Describe their types. 4
(b) Write a note on evolution from prokaryotes to eukaryotes. 4

Question#6
(a) Write down the structure of a nephron. 4
(b) What is incomplete dominance? Explain it with an example.4

Question#7
(a) Give a comprehensive comparison between asexual reproduction, 4
(b) Write a note on ozone layer depletion. 4

Question#8
(a) Describe the role of auxins. 4
(b) Write about necrosis and apoptosis.

Question#9
(a) Discuss the genetics of ABO blood group system. 4
(b) Give uses and Misuses of agrochemicals. 4