Smt. P.A.Sodha Sarvajanik Marathi High School & Haji Ahmedji Musaji Vhora Junior College, Navapur Tal. Navapur Dist. Nandurbar
First Semester Exam
Marks : 50
Std.: XI (Science) Subject: Biology
General Instructions:
01. All Sections are compulsory.
02. Write each section on separate page.
03. Figures to right indicate full marks.
Q. No. 01 Select and Write the correct an answer
i ) In mitochondria DNA is...........
(a) Naked (b) Double stranded (c) Circular (d) All of the above
ii) Which of the following is incorrect in case of birds?
(a) Presence of scales (b) Presence of teeth (c) Nucleated RBCs (d) Hollow bones.
iii) A characteristic of Angiosperm is.....
(a) Double vascular bundles (b) Radial vascular bundles
(c) Double fertilization (d) Seed formation
iv) In Bryophytes....................
(a) Sporophyte and gametophyte generation are independent.
(b) Gametophyte is dependent upon Sporophyte.
(c) Diplontic life cycle. (d) Sporophyte is partially dependent upon gametophyte
v) Cell wall is present in …………….
(a) plant cell (b) animal cell (c) algal call (d) prokaryotic cell
vi) ………………….. is not a property of living being .
(a) Metabolism (b) Decay (c) Growth (d) Reproduction
vii) Plasma membrane is fluid structure due to presence of............
(a) Carbohydrates (b) Glycoprotéines (c) Lipide (d) Polysaccharide
Q. No. 02. Answer the following in ONE sentence (Very Short Answer). 7.
i) Is nucleus covered by membrane?
ii) Plants have no circulatory system! Then how cells manage intercellular transport?
iii) Normal human cell consist of how many number of Chromosomes?
iv) What is Cell Cycle ? v) What are Biomolecules ?
vi) Give the scientific name of Sunflower. vii) Give any one example of Phaeophycean.
SECTION B
Attempt any EIGHT of the following
Q.No.3. Complete the following.
(a) Plant like Protista......................
Q.No.4.Draw a Well labelled diagram of Eukaryotic cell.
Q.No.5.Explain the rules of Binomial Nomenclature classification.
Q.No.6. What are proteins ? Enlist the types .
Q.No.7. What are Cryptograms ?
Q.No.8. What is the importance of carbohydrates ?
Q.No.9. Explain any two animal body plan with suitable example.
Q.No.10. Give Different features of Bryophyta, why they are called Amphibians?
Q.No.11.What is totipotency? Which cells have great medical applications for diseases.
Q.No.12. Differentiate between Mitosis and Meiosis.
Q.No.13. What is RNA? Enlist the types of RNA.
Attempt any FOUR of the following
Q.No.14. Describe the structure of cell organelle , mitochondria which is supposing the
powerhouse of cell with suitable diagram.
Q.No.15. Write a short note on Viruses.
Q.No.16. What is cell theory? Discuss the postulates of modern cell theory..
Q.No.17. Why Lichens are considered as a indicators of pollution?
Q.No.18. Differentiate between plant cell and animal cell.
Q.No.19. If double stranded DNA has 14 % C (cytosine)What percent A (adenine),T(thymine)
and G(guanine) would you expect?
Attempt any TWO of the following 8.
Q.No.20. How monocots are differ from dicots?
Q.No.21. Describe ultra structure of nucleus with suitable diagram.
Q.No.22. Write salient features of five kingdoms system of classification.
Q.No.23. Which are the basic principles of life?
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