Biology
part II 
Paper 1
Note: you have four choices for each objective type 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 circle. As given in objective type question paper and leave other blank. Write the letter A, B, C or D in the column (write correct option) against each question .if there is a contradiction in the bubble and hand written answer, bubble option will be consider correct

Question#1

• A Y-linked trait SRY on Y-chromosome, determines:
  
  A. Femaleness
  B. Baldness
  C. Maleness
  D. Deafness
  
  
• Adult transgenic tobacco plants glowed when sprayed with the substrate:
  
  A. Luciferon
  B. Luciferin
  C. Luciferol
  D. Luciferase
  
  
• A species which is in imminent danger of extinction throughout its range is called:
  
  A. Scarce species
  B. Threatened species
  C. Rare species
  D. Endangered species
  
  
• Succession ends with a divers and relatively stable:
  
  A. Xerosere
  B. Climax community
  C. Derosere
  D. Hydro sere
  
  
• The rate of primary production is about 700-1500 g/m² annually in:
  
  A. Desert
  B. Tundra
  C. Tropical grassland
  D. Temperate
  
  
• As chlorofluoro carbon rise to the atmosphere, the ultraviolet rays release:
  
  A. Fluorine
  B. Chlorine
  C. Carbon
  D. Hydrogen
  
  
• Lizard bark in sun to gain:
  
  A. Heat
  B. Cold
  C. Air
  D. Moisture
  
  
• During infection pyrogens are produced in the human body by:
  
  A. RBCs
  B. WBCs
  C. Platelets
  D. Blood Plasma
  
  
• Opening of flower bud follows:
  
  A. Phtonasty
  B. Eoinasty
  C. Hyponasty
  D. Hyponasty
  
  
• In terrestrial plants the major mechanical stress is imposed by:
  
  A. Gravity
  B. Temperature
  C. Wind
  D. Soil
  
  
• The main transmitter for synapses that lie outside the central nervous system is:
  
  A. Adrenaline
  B. Serotonin
  C. Dopamine
  D. Acetylcholine
  
  
• Beneath the cranium , the brain and spinal cord are protected by triple layer of:
  
  A. Meninges
  B. Skin
  C. Muscles
  D. CSF
  
  
• Corpus lutcum, after its development, starts secreting a hormone called:
  
  A. Oestrogen
  B. Testosterone
  C. Progesterone
  D. Oxytocin
  
  
• Form beginning of 3rd month of pregnancy, the human embryo is referred to as the:
  
  A. Kid
  B. Kitten
  C. Baby
  D. Foetus
  
  
• Clear cytoplasm in an ascidian zygote produces:
  
  A. Muscle cells
  B. Larval Landsteiner
  C. Walter Sutton
  D. Walther Fleming
  
  
• The individuals have additional sex chromosomes in:
  
  A. Turner ‘s Syndrome
  B. Down’s syndrome
  C. Edward’s syndrome
  D. Klinefelter;s syndrome
  
  
• A central role for chromosomes in heredity was first suggested by:
  
  A. Karl Correns
  B. Karl landseteriner
  C. Walter Sutton
  D. Walther Fleming

BIOLOGY
Paper -1
Time Allowed 2:40 Hours
Maximum MARKS: 68
Subjective
Note: write same question number and part number on answer book, as given in the question paper

2. Attempt any eight question 8x2=16

• What are Mwsophytes
• How Malpighian tubule take part in excretion?
• What are effect of ADH and Aldosterone on work of Nephorn?
• What is callus and its role?
• Give two function of Skeleton
• Differentiate between Hyaline and Fibro Cariage
• What is circannual Rhythm?
• How brain is protected with various cover?
• Give the names of structural components of Limbic System
• Differentiate between Oviparity and Viv parity
• What is after Birth?
• What are leg like Babies?

3. Attempt any six parts. 6x2=12

• Differentiate between area opaca and area pellucida
• How does temperature influence on plant growth?
• Briefly describe replication of Lagging Stand of DNA
• Write note on Alkaptonuria
• Differentiate between Heterochromatin and Euchromatin
• Give cause and symptoms of Down’s syndrome
• What is palindromic Sequence?
• What type of animal life is found in Tundra?
• Give the characteristics of Limnetic Zone of fresh water ecosystem

Section II

Note: Attempt any three questions.
Question#5
(a) Give sensory Receptor and their functions in detail
(b) Describe symbiosis by giving two example

Question#6
(a) what is the role of Phytochrome in flowering
(b) How are prokaryotes evolved into Eukaryotes?

Question#7
(a) Describe Necrosis and Apoptosis in detail
(b) Account the Excretory System in Earthworm

Question#8
(a) Explain Ultra structure of Myofilaments of Skeletal muscle fibers.
(b) Write note on Genetic Code.

Question#9
(a) Explain sex Determination in plants.
(b) Write a note on Algal Bloom.