CBSE Class 11 Biology Revision Assignment

1. Who introduced Binomial nomenclature?

2. Write the following scientific name correctly – man, leopard, housefly, potato, tiger, lion and wheat.

3. How are taxonomic studies useful for human being?

4. Name two famous botanical garden of India.

5. Differentiate between-

(a) herbarium and botanical garden

(b) museum and zoological parks.

6. How is a key helpful in the identification and classification of an organism?

7. Write five characteristics of living organisms.

8. Illustrate the taxonomical hierarchy with suitable of a plant and an animal.

9. What is biological classification? How is it done?

10. Arrange the following in correct sequence- class, family, genus, kingdom,species, order,and phylum/division.

11.Why was two kingdom classification found inadequate to classify living organisms? Give three reasons.

12. a) Name three groups of organisms which are acellular.

b) Why did Whittakar not put viruses in five kingdom classification?

13.Distinguish between:

1. How is dicot stem different from monocot stem anatomically?

2. Does secondary growth occur in dicot root? If yes, then diagrammatically depict the same.

3. Describe the internal structure of a dorsiventral leaf, with the help of labelled diagram.

4. Explain the process of occurrence of secondary growth in the stems of woody angiosperms with the help of schematic diagrams.

5. What is periderm? How does periderm formation take place in dicot stems?

6. State the location and function of different types of meristematic tissues in plants.

7. Take one flower each of the families of Fabaceae and write its semi-technical definitions along with floral formula. Also draw their floral diagram.

8. Take one flower each of the families of Liliaceae and write its semi-technical definitions along with floral formula. Also draw their floral diagram.

9. Take one flower each of the families of Solanaceae and write its semi-technical definitions along with floral formula. Also draw their floral diagram.

10. What is phyllotaxy? How is a pinnately compound leaf different from a palmately compound leaf?

11. Draw and describe the different types of aestivation found in flowering plants along with diagrams.

12. How are leaves modified to perform additional functions, explain with suitable example.

13. a) What is heartwood and sapwood?

b) Write the features of autumn wood and spring wood.

Que A :Fill in the blanks using suitable words:

1. In the flower of Brinjal the Ovary is_______ .

2. Chlamydomonas is a _________ algae.

3. Floral formula of Brassicaceae is___________________.

4. _________ tissue provides flexibility to the petiole.

5. Modification of stem in Opuntia for the purpose of photosynthesis is known as ____________.

Que B: Answer the following questions in brief:

1. What are mycorrhizae?

2. What are polysomes?

3. What is coleoptiles?

4. What is meant by endarch xylem?

Que C: Give scientific reasons for the following:

1. Lysosomes are called as suicidal bag of a cell.

2. Tapeworm (Taenia solium) do not possess digestive system.

3. Earthworm (being Hermaprodite )do not show self fertization.

1. How is valvate aestivation different from twisted aestivation? 

2. Give one evidence to show that viruses are smaller than bacteria. 

3. Which plant part has transformed into the following different modifications?

(i) Thorn of citrus (ii) Tendril of pea 

4. How do you represent by symbols the following in a floral formula? (i) Zygomorphic (ii) Adhesion between Corolla and Androecium 

5. What are botanical gardens? Name two botanical gardens of India 

6. Define order. Give example. 

7. What is meant by ‘ Contagium Vivum Fluidum’ ? Who gave this idea? 

8. What the terms ‘algal bloom’ and ‘red tides’ signify? 

9. What is the structural difference between tendril of pumpkin and pea? 

10. Write floral formula of family- Solanaceae 

11. How are Ascomycetes different from Basidiomycetes? 

12. How systematic is different from taxonomy? 

13. Differentiate between axile and free central aestivation. Draw diagram. 

14. How basidiomycetes is different from ascomycetes? 

15. Differentiate between hypogynous and epigynous flower with an example of each.

16. How is key helpful in the identification and classification of an organism? 

17. How are archaebacteria able to live in extreme environmental conditions? Mention two such conditions in which they live. 

18. Differentiate between phototrophic and chemotrophic bacteria. 

19. How are mycoplasma different from other prokaryotes? Name two diseases they cause in animals.

20. Name the fungus called as ‘Drosophila’ of this kingdom. Why? 

21. Mention the modified function performed by: 

a. Underground stem of potato

b. Axillary bud of Citrus

22. How would you differentiate the leaflets of a compound leaf from simple leaves on a branch? Give an example of a plant with bipinnate leaves? 

23. What are bracteates and ebracteate flowers? 

24. When are stamens described as epipetalous? Give an example. 

25. Name two medicinal plants of Solanaceae.

26. Differentiate between androecium of Fabaceae and Solanaceae. 

27. Distinguish between simple epithelium and compound epithelium. 

28. Distinguish between dense regular and dense irregular connective tissue.

29. What are mosaic vision? Name the animal that has mosaic vision. 

30. What is meant by Km value in enzyme reaction? What does in indicate?

31. Bring out the differences between ligase and lyases. 

32. Write how herbarium and museums can be used as taxonomical aids?

33. Explain the modes of nutrition in Eubacteria. 

34. Describe the classification of flowers on the basis of position of ovary. Draw diagram.

35. Write about any two types of protozoa with examples of each. 

36. Describe with the help of diagram the different regions of a root. 

37. (a) Why are cyanobacteria used as biofertilizers?
(b) What do the terms phycobiont and mycobiont signify?
(c) How are mycoplasma different from other prokaryotes? 

38. Name the three basic tissue systems in the flowering plants. Give the tissue names under each system. 

39. Name the three permanent tissues found in flowering plants. Write one function for each. 

40. What is meant by (i) open and (ii) closed vascular bundles 

41. Differentiate between the anatomy of a dorsiventral leaf and that of an isobilateral leaf. 

42. Both lysosomes and vacuoles are endomembrane structures, yet they differ in terms of their functions. Comment. 

43. Bring out the differences between primary and secondary metabolities. Name as example for each of them. 

44. Illustrate a glycosidic, a peptide and phosphodiester bond. 

45. Name the three substages of interphase and enumerate the events in each of them. 

46. Describe Prophase I in detail. 

47. Describe the events that occur in Anaphase I along with a diagram. 

48. Describe the structure of a cilium/flagellum as seen under electron microscope. Bring out the differences between cilium and centriole. 

49. (a) What are the advantages of giving scientific names of the organism?
What is the correct way of writing a scientific name? Illustrate with example.
(b) Define family. Name two genera included in the family felidae.

1. Name the element which is required for keeping two sub-units of ribosomes together.

2. Define Coenocyte, Syncytium.

3. Name the non-living components of a cell.

4. What are plasmids? Describe their significance.

5. Write a short note on plastids. Are different types of plastids interchangeable? If yes, give examples.

6. Draw well labelled diagram of organelles which are semiautonomous and also give reason. Why are they called so?

7. Match the items of List I and List II.

         I                                                  II

1. Microbodies                 contain digestive enzymes

2. Air Vacuoles                 store & concentrate mineral salts and nutrients.

3. Food vacuoles              osmoregulation

4. Contractile vacuoles     enzyme for Peroxide Metabolism

5. Sap vacuole                 store metabolic gases.

8. What are different types of Chromosomes on the basis of position of Centromere.