Biology(New Marks Scheme)
BAHAWALPUR Board 2016
Inter Part II A
Time: 20 Minute
Paper Objective Type
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.

• The nuclear power station can last only for about:
  
  (A) 10 years
  (B) 20 years
  (C) 30 years
  (D) 40 years
  
  
• The average rainfall in temperate deciduous forest is between:
  
  (A) 600—1500 mm
  (B) 650—1500mm
  (C) 700—1500 mm
  (D) 750—1500 mm
  
  
• The actual location of place, where an organism lives is called its:
  
  (A) Niche
  (B) Environment
  (C) Habitat
  (D) Ecosystem
  
  
• The enzyme luciferase is produced by an insect commonly known as the:
  
  (A) House fly
  (B) Butterfly
  (C) Caddis fly
  (D) Fire fly
  
  
• The armord mammals that lives onliy in America, is the:
  
  (A) Armadillo
  (B) penguin
  (C) Echidna
  (D) porcupine
  
  
• When a gene or gene pair at one locus, interferes with or hides the effect caused by another gene or gene pair at another locus, the phenomenon is:
  
  (A) Pleiotropy
  (B) Epistasis
  (C) Codominance
  (D) Dominance
  
  
• Synapsis take place in:
  
  (A) Leptotone
  (B) Zygotene
  (C) Pachythene
  (D) Diknesis
  
  
• Chromosomal theory of inheritance was first formulated by:
  
  (A) Karl correns
  (B) T.H Morgan
  (C) Calvin bridges
  (D) W.sutton
  
  
• Branch of biology which deals with the study of abnormal development and their cause is called:
  
  (A) Teratology
  (B) Gerantology
  (C) Embryology
  (D) microbcephaly
  
  
• Cell death due to tissue damage is called:
  
  (A) Apoptosis
  (B) Metastasis
  (C) Necrosis
  (D) Suicide
  
  
• Development of an egg into embryo without fertilization is called as:
  
  (A) Partenocarpy
  (B) Parthenogenesis
  (C) Meiosis
  (D) Fragmentation
  
  
• Syphills is caused by a spirochete named as:
  
  (A) Nisseria Gonorrheae
  (B) Treponema pallidum
  (C) Escherechia coll
  (D) Hyphormicrobium
  
  
• In living things, the behavior activities accur at regular intervals which are called:
  
  (A) Diurnaal Rhythms
  (B) Circannual
  (C) Biorhythms
  (D) Orcandian
  
  
• The mammals in response who walk on tips of the toes, modified into hooves are termed as:
  
  (A) Plantigrade
  (B) Unguligrades
  (C) Digitigrades
  (D) Branchigrades
  
  
• The movement in response to stimulus of touch i-e climbing vines is called:
  
  (A) Hydrotropism
  (B) Phototropism
  (C) Thigmotropism
  (D) Geotropism
  
  
• Flame cells are part of Excretory system of:
  
  (A) Hydra
  (B) Cockroach
  (C) Planaria
  (D) Earthworm
  
  
• The incidence of calcium oxalate type stones are:
  
  (A) 75%
  (B) 15%
  (C) 10%
  (D) 70%

Biology(New Marks Scheme)
Paper Code 6461
BAHAWALPUR Board 2016
Inter Part II
Time: 2:40 Hours
Paper Subjective Type
Max. Marks:68
PART-I
Note: Section I is compulsory. Attempt ant three (3) questions from Section II and any three (3) parts Section-I from Section III.

• Differentiate between Heterochoromatin and euchromatin.
• Enlist initiation cudon and non-sense cudons.
• What are Nucleosomes?
• Differentiate between Genotype and Phenotype.
• What are jumping genes?
• What are multiple alleles? Give one example.
• What is ecological niche?
• Differentiate between population and community.
• Differentiate between autecology and synecology.

Question#3

• Which Hormones are secreted by Posterior lobe of Pitutary Gland.
• What is parasympatic Nervous system?
• Give the function of Androgens.
• Write down on the functions of Sertoli cells.
• Describe briefly vernalization.
• Names the hormones secreted by placenta.
• What is meant by Genetherapy?
• Differentiate between weather and climate.
• Define the term “Totipotent”.
• Write soil conditions of grassland ecosystem.
• What are Effluents? Giv their effects.
• Give the methods of energy conservation.

Question#4

• Differentiate between Osmoconformers and osmeregulators.
• Define Anhydrobiois with an example.
• What is renal failure?
• Name different bones of hind limb.
• What is epinasty and hyponasty?
• What is muscle fatigue? How it is produced?
• Define embryonic induction.
• How neural plate is formed.
• Define non-disjunction.
• Differentiate between necrosis and apoptosis.
• What is endosymbiont hypothesis?
• Explain the term homology with a suitable example.

PART-II

Question#5
(a) Explain aging with its cause. 4
(b) Discuss Rh Blood group system in Man. 4

Question#6
(a) Write a short note on “Photoperiodism”. 4
(b) Briefly explain One-gene/one-polypeptide hypothesis. 4

Question#7
(a) Give an account of Excretion in plants. 4
(b) Discuss importance of Forests. 4

Question#8
(a) give detail of major factors which are involved in resting potential. 4
(b) Explain nitrogen cycle. 4

Question#9
(a) Write are growth movements? Give its types. 4
(b) Explain Endosymbiont hypothesis for origin Eukaryotic cells. 4

PART-III

(A)
(a):Sketch and label male productive system of frog. 5
(b): Make the labeled diagram of hind Limb of frog. 5
(c): Write the experiment to demonstrate the geotropism plants. 5
(d): Explain and sketch to investigate mitosis in plant cells. 5
(e): Write short answers of the followings:

• Define ecosystem.
• What is role of over-grazing?
• Define biosphere.
• What is synapis?
• Define peripheral nervous system.