Code No. 57/2/1
SET 1
Roll No.
INDIAN SCHOOL AL WADI AL KABIR
FINAL ASSESSMENT 2015-16
CLASS XI
Biology (044)
23.2.16
M.M:70
Time: 3 Hrs.
General Instructions
(i)
(ii)
(iii)
(iv)
(v)
All questions are compulsory
This question paper consists of six sections A, B, C, D, E and F. Section A contains
5 questions of 1 mark each, section B contains 4 questions of 2 marks each, section
C contains 11 questions of 3 marks each,section D is one VBQ of 4 marks, section
E is of 2 questions of 5 marks and section F is OTBA.
There is no overall choice. However, an internal choice is provided for section B, C
and E. A student has to attempt only one of the alternatives in such cases.
The question paper is for 60 Marks. Additional 10 marks are allotted for OTBA.
Wherever necessary neat and labeled diagrams must be drawn.
SECTION A
1. Starch and cellulose are examples for polysaccharides. But for iodine test starch gives
blue colour and cellulose does not. Justify.
2. Distinguish between skeletal muscles and smooth muscles.
3. Subjecting the growing of a biennial plant to a cold treatment stimulated its photoperiodic
flowering response. Name the process involved in this cold treatment.
4. Find out one word for the following scientific explanation.
(a) A store house of collected plant specimens that are dried, pressed and preserved on
sheets.
(b) A collection of preserved plant and animal specimens for study and reference.
5. Write any two morphological differences between male frog and female frog.
SECTION B
6. Identify the plant regulators involved in the following functions.
(a) Induce growth in axillary buds.
(b) Bolt a rosette plant.
(c) Induce rooting in a twig
(d) Delay of leaf senescence.
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7. Draw a neat diagram of myosin monomer and label any four parts.
8. Give names of any four parts of a Maize seed which are absent in a pea seed.
OR
What you mean by parthenocarpic fruit? How it is different from a normal fruit?
9. Name the type of archaebacteria which are present in the following habitats.
(a) Extreme salty areas.
(b) Hot springs.
(c) Marshy areas.
(d) Gut of ruminant animals.
SECTION C
10. Which is known as the structural and functional unit of neural system? Explain the
detailed structure of the same.
11. Describe the composition of cell membrane as suggested by Singer and Nicholson.
12. Observe the following figure and answer the questions.
(a) Identify the type of aestivation and give one example for a plant with the same
aestivation.
(b) Write the special features of the aestivation.
13. Draw a schematic representation of cyclic photophosphorylation and explain how it is
different from non-cyclic photophosphorylation.
14. (a) Schematically represent citric acid cycle.
(b)Name any two organisms that follow this cycle.
15. Describe the structure of DNA as proposed by Watson and Crick.
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16. Hari was studying the morphology of root system of a leguminous plant and he could
find certain pink coloured globular structures in the roots. What is the importance of
these structures and write the sequence of events involved in the formation of these
structures?
17. (a) Name the haploid and diploid stages present in the life cycle of a bryophyte.
(b)Give a comparative study of chordates and non-chordates.
18. Identify the endocrine glands which are associated with the following events/features.
(a) Releases hormones during emergency situations.
(b) Hormone released by this gland helps in the differentiation of T- lymphocytes.
(c) Deficiency during pregnancy leads to cretinism.
(d) Present in close contact with hypothalamus and controls other endocrine glands.
(e) Helps in maintaining the diurnal rhythms of sleep-wake cycle.
(f) A composite gland which is a part of digestive system and acts as both exocrine and
endocrine.
19. With the help of neat labelled diagrams explain any three types of chromosomes based on
the position of centromere.
20. (a) Distinguish between guttation and transpiration.
(b)Write any two special features of guard cells that help them in transpiration.
(c) Give any two differences between xylem transport and phloem transport.
OR
With the help of neat labelled diagram briefly explain the two methods of water transport
deeper into root layers in plants.
SECTION D
21. Arnav’s father was diabetic and due to this he had kidney failure. He was very
disappointed as his father was on dialysis in the hospital.Arnav is asking for a permanent
solution for this problem.
(a) What is hemodialysis?
(b) What is the role of kidney in controlling osmoregulation?
(c) Suggest any other treatment which can be a permanent solution for the problem.
SECTION E
22. (a) Give a comparative account of the anatomy of a grass stem and dicot stem.
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(b)Draw a neat diagram of a conjoint, collateral and open vascular bundle. Label the
important parts.
(c) Give an example for a simple permanent tissue and write any one special feature and
function of the same.
OR
(a) Give any two examples for primary meristem. How it is different from secondary
meristem?
(b)Draw neat labelled diagrams of vascular bundles present in root, dicot stem and
monocot stem.
23. Name and explain the five sub-stages of prophase I of meiosis.
OR
(a) Distinguish between the anaphase of mitosis and meiosis I.
(b) Cytokinesis in plants is different from that in animals. Justify.
(c) What you mean by quiescent stage? How it is different from interphase?
SECTION F
24. OTBA
25. OTBA
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