Biology
(Objective)
Paper(11) 
Time Allowed: 20 minutes 
PAPER CODE 4461 
Maximum Marks:- 17
Note:- You have four choices 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. Attempt as many questions as given in objective type question paper and leave others blank. Use of ink remover or while correcting fluid is not allowed.

Question#1

• Which of the followings is the structural adaptation of animals for thermoregulation?
  
  (A) Pelage 
  (B) Activation of sweat 
  (C) Plumage fluffing 
  (D.) Urination glands
  
  
• Which one is least toxic among the followings
  
  (A) Urea
  (B) Uric acid 
  (C) Ammonia 
  (D)Both A and C
  
  
• Which one of the followings is not an unpaired bone
  
  (A) Mandible
  (B) Vomer. 
  (C) Sphenoid 
  (D) Nasal
  
  
• Which of the foIlowings has/have hydrostatic skeleton.
  
  (A) Mollusck
  (B) Human 
  (C) Jelly Fish
  (D) Both A and C
  
  
• Which one of the followings sometimes substitutes for red light
  
  (A) Auxin
  (B) Gibberellins
  (C) Cylokinins 
  (D) Ethene
  
  
• How many types of receptors are present in skin?
  
  (A) Three types 
  (B) Six types
  (C) Five types 
  (D) Two types
  
  
• Which one of the followings is a day neutral plant.
  
  (A) Cotton 
  (B) Cabbage 
  (C) Snapdragon 
  (D) Strawberry
  
  
• Unhooking of plumule is promoted by
  
  (A) Red light 
  (B) Bluelight 
  (C) Ultraviolet rays
  (D) Both A and C
  
  
• Cleavage results in a structural called
  
  (A) Blastula
  (B) Blastoderm 
  (C) Morula
  (D) Gostrula
  
  
• The stop signal GC series of base pairs is the part of
  
  (A) DNA 
  (B) mRNA 
  (C) t RNA
  (D) rRNA
  
  
• the longest stage of prophase I is
  
  (A) Leptotene
  (B) Zygotene 
  (C) Pachytene 
  (D)Diplotene
  
  
• when different allcles of a gene are both esxpressed in heterozygous condition. It is called
  
  (A) Dominance 
  (B) Codominance
  (C) Overdominance 
  (D) Epistasis
  
  
• Which of the following is produced by transgenic plants as well as transgenic bacteria
  
  (A) Antibodies 
  (B) Hepatitis B vaccine
  (C) Insulin 
  (D) Human growth hormone
  
  
• The first person who argued with evidences that species have undergone evolution and were not specially created in their present form, was
  
  (A) Aristotle
  (B) Darwin
  (C) Linnaeus
  (D) Lamarck
  
  
• Once nitrate enters the plant cell it is reduced as
  
  (A) Nitrite
  (B) Ammonium
  (C) Protein
  (D) Carbohydrate
  
  
• Phyto planktons are
  
  (A) Drifting plants 
  (B) Rooted plants
  (C) Fixed plants 
  (D) Submerged plants
  
  
• What is not true about ozone?
  
  (A) It filters most of UV radiation 
  (B) It protects us from UV rays
  (C) It contains ozone 
  (D) It extends from 8-9 kilometers above earth

(Inter Part - II) 
(Session 2010-12 &2011-13) 
Biology 
(Subjective) 
Paper (II)
Time Allowed: 2.40 hours
Maximum Marks: 68
Section -I

2. Answer briefly any Eight parts from the' followings:- 8x2=16

• Define homeostasis. Give its one importance.
• Define Poikilotherm. Give its two examples.
• Differentiate between shivering thermo-genesis and non-shivering thermogenesis.
• Define turgor pressure. What is its importance.
• Define moulting (ecdysis). Give its one importance.
• What are plantigrade? Give its example
• Give some commercial application of gibberellins.
• What are neurotransmitters. Give their two examples.
• Define endosymbiont hypothesis.
• What are vestigial organs? Give two examples.
• Define autecology and community ecology.
• Define parasitism.Give its importance.

3. Answer briefly any Eight parts from the followings:- 8x2=16

• Define parthenogenesis? How does it differ from apomixis?
• What is seed dormancy? Why is it essential for plants.
• Write down diploid parthenogenesis with an example.
• What is open growth? Explain it briefly in plants.
• What is gray crescent? Give its role?
• What is regeneration? How does it occur in star fish?
• Define Karyotype? What does indicate?
• What is phosphodiester bond? How is it formed?
• Mention layering in grassland eco system.(x) Write down the human impact on tundra ecosystem.
• What are renewable resources? Give examples (xii)Write down the role of forests on the climate?

4. Answer briefly any Six parts from the followings:- 6 x2=12

• Give the changes which occur during anaphase of mitosis.
• Give symptoms of Klinefelter's syndrome.
• Define meiosis.
• Define recombination frequency. How it can be calculated?
• Give the importance of test cross by giving example.
• Give the concept of genes and alleles.
• Give cause and treatment of cystic fibrosis patients.
• Give the process of coronary artery angioplasty.
• Give the use of cell suspension culture technique.

Section-II

Note: Attempt any three questions. (8 x 3 = 24)
Question#5 
(a) Describe the urinary system of human.
(b) Explain the Watson and Crick's Model of DNA.

Question#6 
(a) Describe about the Disc. Slip.
(b) Explain the events of Apoptosis and Necrosis.

Question#7
(a) Describe Crossing over briefly.
(b) Give detail of various factors involved in changing resting membrane potential.

Question#8
(a) What are non-renewable resources? Explain with examples.
(b) Discuss the process of birth in human female.

Question#9
(a) Discuss the external factors that effect the growth rate in plants.
(b) Explain briefly two different zones in fresh water lake Ecosystem.