SAILIWAL BOARD 2013
PAPER BIOLOGY PART-II
Time: 20 Min.
(Objective Part) Marks: 17
Note: You have four choice for each objective type question as A,B,C and D. The choice which you think is correct .fill that circle in front of that question number. Use marker or pen to fill the circles. Cutting or filling two or more circles will result in zero mark in that question.

Question#1

• Detection of change and signaling for effectors response to  the control system is a:
  
  (a) Negative feed web
  (b)Posjtive feed back
  (c) intercoordination
  (d) Feed back mechanism
  
  
• Aldosterone plays role in:
  
  (a) Transport of water
  (b) Uptake of sodturn in loop of henle
  (c) Transport of K+ ion into kidney
  (d) Reabsorption of water
  
  
• Generally, each and of the entire muscle is attacked to bone by bundle of collagen, non__________elastic fibres known as:
  
  (a) Tendon
  (b) Ligament
  (c) Brachialis
  (d) Origin
  
  
• Osteoarthriti$ is the most common chronic arthritis which is a degenerative joint disease also caused by:
  
  (a) Genetic defect
  (b) Hormonal defect
  (c) Nutritienal cause
  (d) Environmental cause
  
  
• The structure in human brain which control hunger is'
  
  (a) Anygdala
  (b) Hippocampus
  (c) Thalamus
  (d) Hypothalamus
  
  
• Development of Frondaty sexual characters in fetnale is used by:
  
  (a) Aldosierone
  (b) Cortisone
  (c) Oestrogen
  (d) Vasopressin
  
  
• A spirochaete., treponerna pailidum, causes:
  
  (a) Genital Herpes
  (b) Gonorrhoa
  (c) Syphilis
  (d) AIDS
  
  
• Diploid parthenogenesis occurs in:
  
  (a) Wasp
  (b) Bee
  (c) Aphid
  (d) Ant
  
  
• The abnormality in which individuals have their upper lip folded or the individuathas harelip is:
  
  (a) Microcephaly
  (b) Cleft palate 
  (c) Klinefeiter's syndrome
  (d) Brachydactyly
  
  
• Each Okazaki fragment A synthesized by:
  
  (a) RNA polymerase
  (b) DNA polymerase-I
  (c) DNA polymerase - II
  (d) DNA polymerase - III
  
  
• The spreading of tumor cells and establishment of secondary areas of growth is called:
  
  (a) Malignin
  (b) Metastasis
  (c) Metamorphosis
  (d) Benign
  
  
• The genic system for determination of sex is present in:
  
  (a) Ginkgo
  (b) Ant
  (c) Ascaris
  (d) Yeast
  
  
• Which one is not biotechnology product:
  
  (a) Hepatitis B vaccine
  (b) Tissue plasminogen activator
  (c) Human growth hormone
  (d) Haemophilia factor -I
  
  
• Emigration and immigration of members of a population, cause disturbance in the:
  
  (a) Genotype
  (b) Phenotype
  (c) Gene pooI
  (d) Genetic drift
  
  
• The distinct levels or link of food chain are called:
  
  (a) Food chain
  (b) Food web
  (c) Trophic levels
  (d) Energy pyramid
  
  
• Layering is the characteristics feature of which ecosystem:
  
  (a) Grassland
  (b) Forest
  (c) Desert
  (d) Boreal and alpine forest
  
  
• The upper weatherd layer of earth crust is:
  
  (a) Rock
  (b) Soil
  (c) Sandy
  (d) Rhizome

Time: 3:10 Hours 
(Subjective Part)
Marks: 83
Section II

2. Attempt any EIGHT short questions. (8 x2= 16)

• How do bony fishes osmo regulate in marine water?
• What is uricotely ? Give examples.
• What is hyperoxaluria? How is it caused?
• Define turgor pressure. Give its importance?
• Differentiate between epinasty and hyponasty?
• What is cartilage ? Mention its types with examples?
• Write down the commercial applicatiotis of auxins?
• 'What are effectors ? Give examples?
• What are hydrothermal vents? How did they support life?
• Describe vestigeal organs with examples?
• Write a brief note on crustose lichen stage?
• Expalin dentrification?

3. Attempt any EIGHT short questions. (8 x2 = 16)

• Differeniiate between parthenocarpy and parthenogenesis .
• Differentiate between Identical and Fraternal twins.
• Define cloning. Describe briefly coining technique in vertebrates.
• Define embryonic induction.
• What is differptiation?
• Give the role of opical dominance in plants.
• Differentiatg between Alpine and Boreal coniferous forests.
• Describe the strustual formula of a nucleotide.
• Differentiate between Heterochronnatin and Euchrornatin.
• Give scientific names of any two animals of temperate deciduous forests.
• Differentiate between Deforestation and Afforestation.
• Give the effects of ozone layer depletion.

4. Attempt any SIX short questions. (6 x 2 =12)

• What are the importance of mitosis ? (any two )
• What are the sympotoms of Down's Syndrome?
• Explain Diplotene Stage in prophase-1 of meiosis.
• What are multiple alleles?
• Differentiate between Autosome and sex-chromosme
• What is polygenic inheritance?
• What are the function of restriction endonucleases ?
• Define cloning of transgenic animals, give an example.
• What is Gene-Pharming?

Section-III

Attempt any THREE questions. (8 X 3 = 24)
Question#5
(a) Define excretion and explain it in plants.
(b) Describe about Walton and Crick model of DNA.

Question#6
(a) Describe Sliding Filament Model of muscle contraction.
(b) Discuss mitosis and its stages.

Question#7
(a) Explain the role of the hormones poduced by pancreas.
(b) Discuss sex-determination in palnts.

Question#8
(a) Define and expalin "Vemalisatino".
(b) Wrtie a note on "Green House Effect".

Question#9
(a) Describe the phases of growth in plants.
(b) Describe the Grass land ecosystem with reference to rainfall and animal life.