(12^th CLASS - 2015)
BIOLOGY
(ACADEMIC SESSION : 2012 -2014 and 2013 -2015) GROUP FIRST
TIME :20 MINUTES MARKS: 17
OBJECTIVE
NOTE: You have four choices for each objective type question as A, B, C and D The choice which you think 3 correct , fill that circle in front of that question number. Use marker or pen to 511 the circles. Cutting or filling two or more circles will result in zero mark in that question.

Question#1

• The mechanism of evaporative cooling in respiratory tact of dog is known as
  
  (A) Panting
  (B) Shivering thermogenesis
  (C) Thermoregulation
  (D) Vasodilation
  
  
• Which of the following is an Endotherm?
  
  (A) Humming Bird
  (B) Reptiles (Lizard)
  (C) Birds
  (D) Bat
  
  
• The word tropic is derived from Greek word “Tropos” meaning
  
  (A) Sticky
  (B) Turn
  (C) Attractive
  (D) Growth
  
  
• All of the following bones are associated with coxal bone, except
  
  (A) Iluim
  (B) Isehium
  (C) Pubis
  (D) Clavicle
  
  
• In neurons the message is transmitted across synapse in the form of chemical messenger called
  
  (A) Neurotransmitters
  (B) Communication
  (C) Nerve impulse
  (D) Synaptic vesicle
  
  
• Fruit ripening is often accompanied by burst of respiratory activity called
  
  (A) Apomixes
  (B) Climatric
  (C) Photoperiodism
  (D) Endosperm
  
  
• Between the seminiferous tubules are interstitial calls , which secrete
  
  (A) Sperinatozoa
  (B) Estrogen
  (C) Testosterone
  (D) Corpus luteum
  
  
• Which one of the following sex chromosomal abnormalities leads to tallness, aggressiveness and antisocial behavior ?
  
  (A) XYY
  (B) XXY
  (C) XO
  (D) XXXY
  
  
• The particular array of chromosomes that an individual possesses is called its
  
  (A) Genome
  (B) Karyotype
  (C) Gene pool
  (D) DNA-duplex
  
  
• Which one sub-stage of Prophase-I of Meiosis-I lasts for days, weeks or even years ?
  
  (A) Zygotene
  (B) leptotene
  (C) Pachytene
  (D) Diplotene
  
  
• (The Syndrome in which individual has short stature, webbed neck, with -out ovaries and complete absence of germ cells is
  
  (A) Mongolism
  (B) Kline fetter syndrome
  (C) Down's syndrome
  (D) Turner's syndrome
  
  
• Different alleles of a gene that are both expressed in a heterozygous condition are called
  
  (A) Co-dominate
  (B) Dominate
  (C) Over dominance
  (D) incomplete dominance
  
  
• Cystic fibrosis patients lack a gene that codes for trans-membrane carrier of the
  
  (A) Sodium ions
  (B) Chloride ions
  (C) Calcium ions
  (D) Potassium ions
  
  
• Tubes that connect the middle ear with the throat in humans are called
  
  (A) Eustachian tube
  (B) Neural tube
  (C) Fallopion tube
  (D) Nephridial tube
  
  
• The process it which micro-organisms use the proteins and amino acids and release ammonia or ammonium ions is known as
  
  (A) Nitrification
  (B) Ammonification
  (C) Denitrification
  (D) Assimilation
  
  
• Ecosystem present on Land or Soil is called
  
  (A) Terrestrial
  (B) Atmosphere
  (C) Lithosphere
  (D) Both A and C
  
  
• Establishment of new forests where no forests existed previously is called
  
  (A) A - forestation
  (B) Reforestation
  (C)Deforemation
  (D) Forestation

(12^th CLASS - 2015)
BIOLOGY
(ACADEMIC SESSION : 2012 -2014 and 2013 -2015)
GROUP FIRST
TIME: 3.10 Hours
Marks: 83
2. Write short answers of any Eight (8) questions of the following 16

• What do you Snow about excretephore(1) Differentiate between osmoregulation and thermoregulation
• Give the special features of Malpigaian tabulus.
• What is T-system?
• Write down the difference between Tetany and Tetanus.
• Compare effective and recovery stroke in paramecium.
• Enlist the key events in animal’s development.
• Compare epiblast and hypoblast in Gastrulation nage of Development.
• What is kinetochore ?
• What do you know about Turner's syndrome ?
• Give the role of migration en affecting gene frequency.
• Give the steps involved in membrane invagination hypothesis.

3. Write short answers of any Eight (8) questions of the following 16

• How instinctive behaviour differs for learned behaviour"
• Give any two similarities between nervous and chemical coordination?
• Anterior lobe of pituitary gland is called master gland. Discuss.
• How external fertilization differs from internal fertilization?
• Give two advantages of cloning.
• Write a brief note on tissue culture.
• Define genomic library.
• What me restriction enzymes?
• Differentiate between alpine and boreal forests.
• Differentiate between Savanna and prairies.
• Rat is difference between aforestation and reforestation.
• What is stone cancer ? Give it cause.

4.Write short answers of any Six (6) questions of the following 12

• Define semi conservative replication.
• Compare template strand with coding strand.
• Define Transformation
• Differentiate between sex chromosomes and autosomes
• Define Y-linked trait with one example.
• What id MODY?
• Describe effect of moderate grazing.
• What do you know about commensalism?
• Differentiate between pioneers and climax community.

SECTION-II

Question#5
(a) Explain thermogulation in mammals 4
(b) Define and explain green house effect 4

Question#6
(a) Explain membrane invagination theory for the evolution of eukaryotic cells 4
(b) Give an account of skull bones 4

Question#7
(a) Describe feedback mechanism with example 4
(b) Describe biotic components of an ecosystem 4

Question#8
(a) What is parthenocarpy? How fruits ripened? 4
(b) Discuss what in Genetic code 4

Question#9
(a) Write a note on Growth correlations 4
(b) Describe Epistasis with the help of an sample 4

SECTION - III (PRACTICAL PART)
Question#10
Attempt my three parts from A, B, C and E (5x3=15)

(A) Sketch and label female urinogenital system of Frog. 5
(B) Sketch and label Hind limbs of frog. 5
(C) Write down the procedure to investigate polytene chromosome of Drosophila. 5
(D) Write down the procedure of ford chain and food web of Pond Ecosystem. 5
(E) Answer the following parts. 5
(i) Define Ecosystem
(ii) What is muscle twitch?
(iii) What is kymograph ?
(iv) What is die fate of Mesoderm
(v) Define zone of function

(12^th CLASS - 2015)
BIOLOGY
(ACADEMIC SESSION : 2012 -2014 and 2013 -2015) GROUP SECOND
TIME :20 MINUTES MARKS: 17
OBJECTIVE
NOTE: You have four choices for each objective type question as A, B, C and D The choice which you think 3 correct , fill that circle in front of that question number. Use marker or pen to 511 the circles. Cutting or filling two or more circles will result in zero mark in that question.

Question#1

• Saliva and cone are used for evaporating cooling by
  
  (A) Dat
  (B) Dogs
  (C) Birds
  (D) Seals
  
  
• The homeostatic thermostat is prose in
  
  (A) Pituatory
  (B) Hypthalmus
  (C) Pancrease
  (D) Kidney
  
  
• The incidence of din oxalate type of kidney stones is
  
  (A) 10 %
  (B) 15 %
  (C) 70 %
  (D) 80 %
  
  
• Positive gravitopism of root is due to
  
  (A) Auxin
  (B) Gibberellin
  (C)Abscisic acid
  (D) Ethene
  
  
• The number of spinal nerve in man is
  
  (A) 24
  (B) 62
  (C) 12
  (D) 31
  
  
• Rapid aging and law resistance to environmental stress and diseases are limitations of
  
  (A) Parthenocarpy
  (B) Vernalization
  (C) Cloning
  (D) Photo tropism
  
  
• Evolution of pollen tube is parallel to the evolution of
  
  (A) Stem
  (B) Leaves
  (C) Flower
  (D) Seed
  
  
• The shell of chick egg is secreted as egg passes through
  
  (A) Oviduct
  (B) Uterus
  (C) Ovary
  (D) Fallopian tube
  
  
• RNA polymerase II synthesize
  
  (A) mRNA
  (B) TRNA
  (C) ΩRNA
  (D) CDNA
  
  
• The pairing ofbecaologus chromosomes occurs during
  
  (A) Leptotene
  (B) Zygotene
  (C) Pachytene
  (D) Diplotene
  
  
• The stage of prophase that last for days, weak or even year is
  
  (A) Leptotene
  (B) Zygotene
  (C) Pachytene
  (D) Diplotene
  
  
• The gene for blue opsin is present on autosome
  
  (A) 7
  (B) 11
  (C) 19
  (D) 21
  
  
• Adult transgenic tobacco plants glowed when sprayed with the substrate
  
  (A) Luciferin
  (B) Myoglobin
  (C) Haemoglobin
  (D) Methionine
  
  
• In human eustachin tubes connect middle ear with
  
  (A) Nose
  (B) Eye
  (C) Throat
  (D) Brain
  
  
• An association between two organisms by which both are benefitted is called
  
  (A) Parasitism
  (B) Commensalism
  (C) Predation
  (D) Mutalism
  
  
• Northern coniferous forest are called
  
  (A) Alpine
  (B) Boreal
  (C) Taiga
  (D) Praries
  
  
• A chemical which kills weed plants is called
  
  (A) Pesticide
  (B) Insecticide
  (C) Fungicide
  (D) Herbicide

(12^th CLASS - 2015)
BIOLOGY
(ACADEMIC SESSION : 2012 -2014 and 2013 -2015)
GROUP SECOND
TIME: 3.10 Hours Marks: 83
2. Write short answers of any Eight (8) questions of the following 16

• Differentiate between osmocor formers and osmoregulator.
• Differentiate between endotherms and ectotherms.
• Define anhydrobiosis, give an example.
• Differentiate between epinaoy and hyponasz.
• What are floating ribs'?
• What are hinge joints, give an example.
• What are lateral meristems and what is their role?
• What is apical dominance?
• What is mitotic apparatus and what is is role during cell division?
• Define crossing over.
• What is endosymbiont hypothesis?
• Differentiate between endangered and threatened species.

3. Write short answer; any Eight (8) questions of the following 16

• Give two factors which influence life on land.
• Differentiate between climate and weather.
• Give two goals of human ganome project.
• How can you get a gene?
• Differentiate between Lactation and gestation.
• Define climacteric.
• Define Apomixis.
• Give types of innate behavior.
• Define feed bank mechanism.
• Differentiate between sympathetic and parasympathetic system.
• Define Entrophication
• Give effects of Mismanaged agiculture Ecosystem.

4. Write short answer of any SiX (6) questions of the following 12

• Differentiate between heterochromatin & and Euchromatin
• What do you know about Okazaki Fragment?
• What is Central Dogma?
• What is Hemophilia?
• What are Opsins?
• What is Hypophosphatemic Rickets?
• What is meant by Biogeochemical Cycle?
• Differentiate between Synecology and Autecology.
• What is Assimilation?

Note: Attempt any Three questions from this section (8x3=24)

Question#5
(a) Discuss the liver as as excretory organ 4
(b) Write down detailed note on Green house effect 4

Question#6
(a) What is bone fracture? Explain the repair process of a simple fracture. 4
(b) Describe various factors affecting gene frequency. 4

Question#7
(a) Discuss hormones of anterior lobe of pituitary gland. 4
(b) Explain stafe of xerosere. 4

Question#8
(a) Write a note on tissue culturing. 4
(b) Define mutation. Describe point mutations with the help of example.

Question#9
(a) Explain abnormal development.
(b) Define and explain Mendel's law of Independent assortment.

Question#10
Attempt my three parts from A, B, C, D and E (5x3=15)

(A) Sketch and label nervous system of cockroch. 5
(B) Sketch and label pelvic girdle of frog. 5
(C) Write down procedure, to study mitosis in onion roots tips. 5
(D) Investigate the food chain and food web of an aquatic / pond ecosystem. 5