TIME ALLOWED: THREE HOURS MAXIMUM MARKS: 100
NOTE: (i) Attempt ONLY FIVE questions in all, including QUESTION NO.8, which is COMPULSORY. All questions carry EQUAL marks.
(ii) Extra attempt of any question or any part of the attempted question will not be considered.
(iii) Candidate must draw two straight lines ( ============= ) at the end to separate each
question attempted in Answer Books.

Q.1. (a) What is the structure and role of Nucleolus in the cell. (9)
(b) Explain Polymorphism in Lysosomes. (11)

Q.2. (a) Describe various steps involved in Translation. (10)
(b) What are various functions of Endoplasmic recticulum. (10)

Q.3. (a) How CO2 is transported tin higher animals? Explain various methods. (11)
(b) What is the relationship between availability of water and the nitrogenous waste products produced in animals? (9)

Q.4. (a) Explain law of Independent assortment by taking examples from animals. (10)
(b) Discuss various chromosomal aberrations along with their role. (10)

Q.5. (a) Prove the role of Natural Selection in Darwinian Evolution by examples. (10)
(b) What is a specie, how they were evolved, discuss various ideas. (10)

Q.6. (a) Explain Biogeochemical cycle, with the help of Nitrogen cycle. (12)
(b) Name various zones of a deep freshwater pond. What type of life is present in each zone. (8)

Q.7. Write notes on the following: (5 each)
(a) Transcriptional bubble
(b) Nerve Impulse
(c) Pituitary
(d) Green House effect

Q.8. Write only the correct answer in the Answer Book. Do not reproduce the question.

(1) Chemical composition of Ribosomes is:
(a) DNA
(b) RNA
(c) DNA & Protein
(d) RNA & Protein

(2) Electron Transport chain is located in:
(a) cytoplasm
(b) mitochondria
(c) lysosmes
(d) Nucleus

(3) Transcription involve the synthesis of:
(a) Mrna
(b) rRNA
(c) tRNA
(d) All of these

(4) XXY individual in Drosophila (Fruit fly) is:
(a) male
(b) female
(c) sterile
(d) All of these

(5) Ecological niche is of an individual:
(a) address
(b) profession
(c) Both (a) and (b)
(d) None of these

(6) Crossing over involve the formation of:
(a) desmonstomata
(b) chromonemata
(c) chiasmata
(d) All of these

(7) Attachment of O2 with hemoglobin to form oxyhemoglobin is a change:
(a) Physical
(b) Chemical
(c) Both (a) and (b)
(d) None of these

(8) Acetylcholine is a:
(a) chemical transmitter
(b) electrical transmitter
(c) physical transmitter
(d) None of these

(9) In Blood groups gene IA and IB are:
(a) Co-dominant
(b) Co-recessive
(c) Dominant recessive
(d) Incomplete Dominant

(10) The idea of Lamarack on evolution is based upon:
(a) Use & Disuse of organs
(b) Acquired character
(c) Both (a) and (b)
(d) None of these

(11) Ammonia is the excretory nitrogenous waste:
(a) Primary
(b) Secondary
(c) Tertiary
(d) None of these

(12) Special functions of smooth Endoplasmic reticulum is:
(a) Lipid synthesis
(b) Glycogenolysis
(c) Detoxification
(d) All of these

(13) In birds sex is determined by the type of:
(a) Sperms
(b) Eggs
(c) Both (a) and (b)
(d) None of these

(14) The Pre-Historic atmosphere of earth had:
(a) methane
(b) ammonia
(c) hydrogen sulphide
(d) All of these

(15) C. Linneous proposed the method of naming organisms:
(a) uninominal
(b) binomial
(c) trinomial
(d) None of these

(16) Trypsin is protease secreted in:
(a) Bile
(b) Saliva
(c) Gastric juice
(d) Pancreatic juice

(17) Cerebellum is the part of brain:
(a) Forebrain
(b) Mid-brain
(c) Hind-brain
(d) Spinal cord

(18) The constriction of centromere is called as:
(a) Primary
(b) Secondary
(c) Tertiary
(d) All of these

(19) Gene for Haemophilia in man is located on:
(a) autosome
(b) X-chromosome
(c) Y-chromosome
(d) All of these

(20) DNA duplicate during:
(a) Prophase
(b) Metaphase
(c) Telophase
(d) Interphase

__________________
~Miss zoologist~