test paper

1. BIOLOGY
Class XI
Max Marks: 60
General Instructions:
1. All questions are compulsory.
2. Questions papers consist of five sections A has 5 questions of 1mark each.
Section B has 4 questions of 2 marks each. Section C has 11 questions of 3
marks each. Section D has 1 question of 4 marks and Section E has 5 marks
each has 2 questions of 5 marks each.
3. Wherever necessary, the diagrams drawn should be neat and properly
labeled.
Section A
1. Which membrane is used to bound vacuole of a plant cell?
2. Give the name of the method by which cytokinesis takes place in a plant cell?
3. Why intestinal mucosa has microvilli ?
4. What constitute cambial ring?
5. Name the plant hormone that inhibits growth of the plant?
Section B
6. Differentiate between mitosis and meiosis?
7. What is hydrophonics? Give one application of this technique?
8. “Potato is a stem and sweet potato is a root”. Justify the statement?
9. How is foctus with Rb positive blood gets affected, if his/her mother is Rb negative?
Section C
10. What is mean by symplast and apoplast pathway in plants?
11. What is aestivation? Describe its various types?
12. Explain only diagrammatically Hatch and Slack pathway or C4 pathway?
13. Draw a well labeled diagram of digestive system of cockroach?

2. 14. How many vertebrate are present in a human adult? Categorize them on the basis of
their location and give specific no in each category?
OR
How is nerve impulse conducted along non myclinated neuron?
15. Describe lock and key hypothesis of enzyme?
16. Name the hormone secreted by follicles of thyroid gland. Give two symptoms of
hypothyroidism and hyperthyroidism and name the diseases?
17. How is urine formed in human kidney?
18. Explain with ray digram the events occurs during glycolysis in a cell?
19. Where does non cyclic photo phosphoryation takes place? Describe the process?
20. What is photoperiodism. Explain types of plants on the basis of photoperiodism.
Section D
People working in certain industries especially those involved in grinding or breaking of
stones and manufacturing of cement,etc. suffer from certain respiratory disorders, though
they are provided with protective masks and nasal filters. The companies arrange for
periodic medical check up too?
a) What are such diseases called?
b) Name two such diseases?
c) What are the common symptoms?
d) What value is shown by the authorities of the industries in
providing medical check up and protective masks?
SectionE
22.How does the transport of CO2 takes place in human blood? Explain?
OR
Explain sliding filament theory of muscle contraction?
23.Explain structure of human eye with diagram?
OR
Explain internal structure of human ear?