Karnatak University 2006 Science - II (Biology) - Question Paper

PART – A
Four options are suggested to every of the subsequent ques. / incomplete
statements. select the most improper option and write the alphabet of the
chosen ans in the box given. 20 × one = 20
1. A limbless amphibian is
(A) Frog (B) Toad
(C) Salamander (D) Ichthyophis.
2. Jaggery and sugar are used as adulterants in
(A) honey (B) juice
(C) sweets (D) chocolates.
3. The organ which indicates visible response in the unit of nervous system is
(A) receptor (B) effector
(C) regulator (D) conductor.
4. The movement of a chemical substance from the reservoir pool to the exchange pool
is called
(A) recycling (B) diffusion
(C) fixation (D) chemical recombination.
5. D.N.A. fingerprint technology has obtained significant application in the field of
(A) genetics (B) forensic science
(C) agricultural science (D) physiology.
6. Sclerenchyma fibres are used in making gunny bags because they are
(A) elastic and flexible (B) thick and long
(C) irregular and short (D) short and hard.
7. The instrument used to test the density of milk is
(A) thermometer (B) hydrometer
(C) lactometer (D) barometer.
8. Phycoerythrin and phycocyanin are obtained in
(A) green algae (B) blue algae
(C) brown algae (D) red algae.
9. A person is suffering from a disease known as dropsy. The adulterant which causes
it, is
(A) mineral oil (B) argemone oil
(C) lubricant oil (D) kerosene oil.
10. The sound waves ultimately reach the organ of Corti through
(A) Endolymph (B) Perilymph
(C) Eustachian tube (D) Auditory canal.
11. The disadvantage with genetically replaced plant is
(A) absence of flowers (B) inability to produce seeds
(C) sterility of seeds (D) absence of fruits.
12. Mammals are warm blooded animals. So their body temperature
(A) varies according to seasons
(B) depends on the age
(C) according to the thickness of hair
(D) remains constant irrespective of the environment.
13. To decrease air pollution, the chimney in an industry must be altered by
(A) increasing the height (B) increasing the diameter
(C) decreasing the number (D) decreasing the diameter.
14. A ganglia is formed by several
(A) dendrites (B) nerves
(C) neurons (D) axons.
15. The skeletal system in human body provides support
(A) only externally (B) both internally and externally
(C) only internally (D) partially.
16. The hormone which helps in the development of feminine characteristics is
(A) testosterone (B) androgen
(C) progesterone (D) estradiol.
17. The shape of muscles obtained in oesophagus which helps in peristaltic movement is
(A) spindle (B) square
(C) columnar (D) circular.
18. The process of conversion of ammonium salts into nitrates and nitrites is
(A) ammonification (B) denitrification
(C) biological fixation (D) nitrification.
19. The tissue endothelium obtained in blood vessels is referred as
(A) cuboidal epithelium (B) squamous epithelium
(C) ciliated epithelium (D) stratified epithelium.
20. A boy sees a snake while playing in the garden. He shouts for help in fear. The
hormone secreted in his body at that time is
(A) cortisone (B) noradrenaline
(C) adrenaline (D) dopamine.

PART – B
i) ans the subsequent ques..
ii) Answers should be brief and to the point.
21. Write any 2 causes of water pollution. 2
22. Write 2 important characteristics of reptiles. 2
23. Name the subsequent : 2
a) A tissue obtained in all the regions in herbs and soft parts of a plant.
b) A tissue that occurs in growing regions like root tip, stem apex and buds.
24. Write any 2 differences ranging from gymnosperms and angiosperms. 2
25. a) What is the meaning of Hepatitis ?
b) Which organ is affected by Hepatitis ?
c) Name the pigment released to the blood during infection. 3
26. Draw a neat diagram of the vertical part of the human eye and tag the subsequent
parts :
i) Pupil ii) Cornea
iii) Choroid layer iv) Yellow spot ( Fovea ). 4

Earning:   Approval pending.