BIOLOGY
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 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. 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 considered correct

Question#1

• Malpighian tubules remove nitrogenous wastes from
  
  (A) Lymph
  (B) Haemocoel
  (C) Haemolymph
  (D) Haemoglobin
  
  
• Animals whose excretory system is associated with digestive tract
  
  (A) Sharks
  (B) Cockroaches
  (C) Frogs
  (D) Lizards
  
  
• Which one is a disease of children
  
  (A) Rickets|
  (B) Arthritis
  (C) Parkinson's disease
  (D) Arteriosclerosis
  
  
• Outer most layer of exoskeleton is
  
  (A) Endocuticle
  (B) Exocuticle
  (C) Procuticle
  (D) Epicuticle
  
  
• Hormone , antagonistic to parathormone is
  
  (A) Oxytocin
  (B) Thyroxine
  (C) Calcitonin
  (D) Cortisone
  
  
• Learning associated with indifferent situation without reward
  
  (A) Insight learning
  (B) Latent learning
  (C) Imprinting
  (D) Habitation
  
  
• Males of honey bee are
  
  (A) Haploids
  (B) Diploids
  (C) Triploids
  (D) Polyploids
  
  
• During night , plants contain more phytochromes in the form of
  
  (A) P600
  (B) P660
  (C) P700
  (D) P730
  
  
• Light enhances cell division in plants
  
  (A) Yellow
  (B) Green
  (C) Red
  (D) Blue
  
  
• Number of chromosomes in penicillium fungus are
  
  (A) 1
  (B) 2
  (C) 6
  (D) 32
  
  
• Phase of extensive metabolic activities in cell cycle , is
  
  (A) GI
  (B) G2
  (C) S
  (D) M
  
  
• Example of sex limited trait in man is
  
  (A) Colour blindness
  (B) Baldness
  (C) Beard
  (D) Long hair
  
  
• DNA polymerase enzyme is extracted from
  
  (A) Viruses
  (B) Fungi
  (C) Animals
  (D) Bacteria
  
  
• Ultimate source of evolution is
  
  (A) Migration
  (B) Mutation
  (C) Random mating
  (D) Selection
  
  
• Relationship between Rimoras and Sharks , is an example of
  
  (A) commensalisms
  (B) Mutualism
  (C) Predation
  (D) Parasitism
  
  
• Most fragile of all biomes , is
  
  (A) Grassland
  (B) Desert
  (C) Tundra
  (D) Forest
  
  
• Upper layer of earth's crust , is
  
  (A) Dust
  (B) Sand
  (C) Soil erosion
  (D) Soil

BIOLOGY
TIME: 2.40 hours
MARKS: 68
SUBJECTIVE

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

• What is adrenal cortex , give its hormone as well ?
• How shivering thermogenesis is caused ?
• What do you know about renal failure ?
• Differentiate collenchyma from parenchyma
• How Epinasty leads to the opening of buds ?
• State the role of skeletal system in mineral homeostasin
• Define diurnal rhythms with example
• Explain briefly haptonastic movements with example
• What is cartilage and when is it found?
• Give path of nerve impulse through synapse
• Describe alternation of generation briefly
• Which type of events occur during after birth

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

• Explain MODY
• What are sex influenced traits?
• Define nullo gamete
• Define endosymbiont hypothesis
• Write about vestigial organs
• Write down two measures to preserve endangered species
• What are biogeochemical cycle?
• Write down briefly about r root nodules
• Define biosphere
• How nutrient cycle is upset
• Explain briefly fossil fuels
• Differentiate between A forestation and Reforestation

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

• Diffenciate inhibitory and compensatory effect on growth
• Give any for key events in animal development
• How nucleosome is formed?
• What is okazaki fragment? 
• How do mutagens cause mutation?
• How cancer cells are different from normal cells? 
• What do you mean by Totipotent?
• Differentiate between Alpine and Boreal coniferous forest
• Differentiate between climate and weather

SECTION-II

Note: Attempt any Three questions from this section (8x3=24)
Question#5
(a) Write a note of synapse 4
(b) Write a note on endangered species 4

Question#6
(a) What is the function of placenta during pregnancy ? 4
(b) How Morgan experimentally proved the theory of Heredity 4

Question#7
(a) Discuss the thermoregulatory stratagies in mammals including humans 4
(b) Describe meiotic errors (non-disjunction) with examples 4

Question#8
(a) How Birds adapted for flight 4
(b) What is concluded by Meselson and Stabl exper4iment 

Question#9
(a) Give the importance of Mitosis 4
(b)Write note on wild-life 4