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Baroda Lions School, Alkapuri
First Terminal Examination – 2010-11
Sub.: Biology
Std.
Date
Day
: XII
: 16/09/2010
: Thursday
Marks : 100
Time : 3 hrs
Section – A
Q. 1 Multiple Choice Questions — (1 Mark Each)
1. Stomata of plants open due to :
(a) Influx of K+ ions (b)
Efflux of K+ ion (c) Influx of H+ ions (d) Influx of Ca+ ion
2. Xylem vessel contain :
(a) Pure water
(b)
Water & dissolved sugar
(c) Water & dissolved mineral
(d)
Water, mineral ion & sugar
3. The process of photosynthesis is :
(a) Reductive, exergonic, catabolic
(b)
Reductive, endergonic, catabolic
(c) Reductive, exergonic, anabolic
(d)
Reductive, endergonic, anabolic
4. Where does assimilination occurs ?
(a) In the liver (b)
In the every cell of the body (c) In small intestine (d)
In blood
5. They ingest food by mouth parts :
(a) Chordates
(b)
Protozoans
(c)
Arthropods (d)
Annelids
6. Which animal is uricotelic ?
(a) Jellyfish (b)
Octopus
(c)
Ostrich
(d)
Deer
7. Grey spots of Oat are caused by defficiency of :
(a) Zn
(b)
Cu
(c)
Mn
(d)
Fe
8. Formation of ATP in respiration is called :
(a) Photophosphorylation
(b)
Substrate phosphorylation
(c) Oxidative phosphorylation
(d)
Phosphorylation
9. Liver Secret :
(a) Acids only
(b)
Bile
(c)
Hormones
(d)
Digestive enzymes
10. Vermiform appendix is an extension of :
(a) Duodenum
(b)
Ileum (c)
Caecum
(d)
jejunum
11. Heart beat accelerated by the :
(a) no. of RBC (b) Sympathetic nerves (c)
Cranial nerves (d) Stomach peristalsis
12. The reabsorption of H2O in tubules of nephrons takes place by :
(a) Active transport (b)
Simple diffusion (c) Osmosis (d) Filteration
13. Blood pressure is controlled by :
(a) Corpus luteum (b)
Thymus
(c)
Thyroid
(d)
Adrenal
14. The internal ear is filled with :
(a) Endolymph
(b)
Perilymph
(c) Aqueous humour (d) Both (a) and (b)
15. Majority of freshwater bony fishes are :
(a) aminotelic (b)
ammonotelic (c)
ureotelic
(d)
uricotelic
16. Human urine as compared to human blood is :
(a) isotonic (b)
Hypotonic
(c)
hypertonic
(d)
all of these
Section – B
Q. 2 Short Answers Questions — (1 Mark Each)
1. Theory of cohesion proposed by ____________ to explain ___________.
2. Name the first CO2 acceptor in C4 Pathway.
3. RQ values is () infinity when _________ occurs.
4. State calorie value & physiological value of carbohydrate.
5. Which enzymes are present in Pancreatic juice which acts of proteins?
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6.
7.
8.
9.
10.
11.
12.
13.
14.
15.
16.
Mention two carbamino compounds.
What is chronic bronchitis ?
Write two aspects that affect process of osmosis.
What is reductive amination ?
Which product is considered as the connecting link between glycolysis and kreb’s cycle.
What is saprophytic nutrition. Give example.
Name the all salivary glands in human. Which enzyme is it has a germicidal activity ?
In which phyla circulatory system does not occur ?
What are osmoconfirmers ?
What is Chyme and Chyle ?
Which all substances are secreted in DCT ?
Section – C
Q. 3 Short Answers Questions — (2 Marks Each)
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1. Describe hydroponics method of growing plants.
2. Explain photolysis of water.
3. Explain pentose phosphate pathway.
4. What is pulmonary circulation ?
5. Write equations : (a) Glycolysis
(b) Anaerobic respiration
6. Draw diagram for Photorespiration.
7. Define : (a) Incipient plasmolysis (b) deplasmolysis.
8. Write absorbed form of these minerals. (a) Hydrogen (b) Sulphur (c) Copper (d) Boron
9. Explain : Insectivorous plants with example.
10. Differentiate between open and closed Circulation.
11. What is the concentration of glomerular filterate ? What will happen if this filterate is discarded as it is
from the body ?
12. Explain the phase of urine formation in which filterate becomes concentrated.
Section – D
Q. 4 Long Answers Questions — (3 Marks Each)
1. Describe kinds of transpiration. By which kind largest amount of transpiration occurs.
2. Describe in detail : (a) Amino acid synthesis (b) Active absorption of mineral nutrients.
3. Explain holozoic nutrition with their subtypes.
4. Explain activity of heart beat in humans is self inducing.
5. Difference between C3 Path & C4 Path.
6. Write a note on lymphatic system.
7. Explain with diagram plasmolysis is plant cell.
8.
Section – E
Q. 5 Long Answers Questions — (4 Marks Each)
1. Write in detail process of Nitrogen fixation.
2. Explain chloride shift and chloride back shift.
3. Explain the structure of uriniferous tubule.
4. While a note on ‘Role of Hormones in process of digestion’.
5. Draw well labeled diagram of ‘structure of uriniferous tubule’.
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