AHLCON PUBLIC SCHOOL, MAYUR VIHAR – I, DELHI – 110091.
BIOLOGY ASSIGNMENT- CLASS – XI (2016- 2017)
UNIT – 1 CHAPTER – 1
THE LIVING WORLD
Q.1 What is a lead? 1
Q.2 What are taxonomic keys? 1
Q.3 Why scientific names are written in italics? 1
Q.4 Botanical gardens are living herbaria. Comment? 2
Q.5 Mention the characteristics of “New systematics”. 2
Q.6 What is trinomial nomenclature? 1
Q.7 Why people give common vernacular names to organisms?
Q.8 Taxonomy for a long time was considered as descriptive science. Why? 2
Q.9 What do you understand by herbarium? Explain the various steps envolved in preparing a specimen. 2
Q.10 Explain the advantages of binomial nomenclature? 2
Q 11 explain various steps involved in preparing the herbarium specimens. 2
Q 12 Describe three important characteristics of development? 2
UNIT – 1 CHAPTER – 2
BIOLOGICAL CLASSIFICATION
Q.1 Compare a basidium with an ascus. 1
Q.2 What are myoplasma?
1
Q.3 What are archaebacteria? 1
Q.4 Why are some fungi grouped under “fungi imperfecti”? 2
Q.5 Who discovered bacteria? What is their definition and where they are found. 2
Q.6 What are cellular slime – moulds? 2
Q.7 In which group are the following found? Conidia, zygospore, ascosporic, sporangiophore. 2
Q.8 Write in brief the demerits of five kingdom classification? 2
Q.9 Write salient feature of viruses. 2
Q.10 What are insectivorous plants? Name few. 2
Q.11 What do you mean by alternation of generation? 2
Q.12 Name the causal organism – 1 ´ 10 = 10
a) Soft rot
b) Bacterial rot
c) Blight of rice
d) Wilt of potato
e) Red rot of sugarcane
f) Citrus canker
g) Black rust of wheat
h) Loose smut of wheat
i) Athlete foot
j) Ringworm
Q 13. Name one gymnosperm with each of the following characteristics.
a. Stem is unbranched
b. Pinnately compound leaves
c. Stem is dichotomously branched
Q 14. What are rhizoids ? Mention their important functions.
Q 15. What are phycocolloids ? What advantage do they confer in algae?
AHLCON PUBLIC SCHOOL, MAYUR VIHAR – I, DELHI – 110091.
BIOLOGY ASSIGNMENT- CLASS – XI
PLANT KINGDOM
1. What IS Peritonium?
2. What are sporophylls?
3. What are phycocolloids?
4. Define mesophytes.
5. The h in angiosperms forms seeds with in a ______.
6. Mosses & Ferns are ______among plants.
7. The red colour of red algae is due to the pigment s phycoerythrin & ______.
8. Multicellular life arose where the sea meets the ______.
9. Write a note on economic importance of gymnosperms.’
10. Give characteristics of plant kingdom.
11. Fucoxanthin is the dominating pigment in ______.
12. In conifers the seeds are born on structures called ______.
13. The sex organs of ferns are present on ______.
14. Name the tallest & smallest angiosperm.
15. What is the basic of classification in algae?
16. Why is the angiosperm triploid in nature?
17. What is meant by anthrediophore & archegoniophore?
18. Give one example each of monoecious & dioecious angiosperms.
19. Name two free floating brown algae.
20. Define ‘alternation of generation’.
21. Differentiate between c ryptogams & phanerogams.
22. What are mycorrhiza? Name a gymnosperm that has Mycorrhiza.
23. Describe Haplontic life cycle.
24. What are homosporous ferns?
25. Represent schematically life cycle of angiosperms.
26. Why do bryophyte lives in damp & shady moist places?
27. What is the name given to sex organs of bryophytes?
28. Name the dominant phase in the life cycle of ferns.
29. When & where meiosis occurs in pteridophytes?
30. Fern prothallus is monoecious. Justifty.
31. Differentiate between Haplontic & diplontic life cycle.
32. Name one unicellular algae.
33. Name green algae which is used as protein rich food.
34. Name the structure which fixes the brown algae at substratum.
35. What is a flower?
36. Which plant is adapted to arid conditions?
37. What is the name of Pitcher plant?
38. The seed plants without flowers are ______
39. Cuscuta are ______. 1
40. Mention two economic importance of sphagnum. 2
41. Nametwoheterosporousferns.whyaretheyreferred so ? 2
42. Differentiate between the following 2 x 4
a. Red algae and brown algae
b. Liverworts and moss
c. Homosporous and heterosporous pteridophyte
d. Syngamy and triple fusion
AHLCON PUBLIC SCHOOL, MAYUR VIHAR – I, DELHI – 110091.
BIOLOGY ASSIGNMENT- CLASS – XI
ASSIGNMENT - IV
ANIMAL KINGDOM
1. What are pelagic animals? 1
2. What is the skeleton of poriferous made of? 1
3. What is bioluminescence?
4. What is meant by metamerism? Give an example of animals showing metamerism. 2
5. Differentiate between chordata & cephalochordate. 2
6. Describe canal system of sponges. 2
7. Write six characters of phylum Hemichordate
8. What is notochord? On the basis of notochord describe two major groups of animals. 2
9. Mention four diagnostic characters possessed by all the chordates. 2
10. Name three poisonous snakes. Why are they included in class reptiles? 3
11. Differentiate between cartilaginous & bony fishes giving examples of each. 3
12. Explain the following terms. 1 x 5
i) Homiothermous
ii) Sexual dimorphism
iii) Metamorphosis
iv) Notochord
v) Haemocoel.
13. Why symmetry is most common in animals? Define it. 2
14. Name two economically important insects & two insects which serves as vectors of diseases. ½ x4
15. Write scientific names of 1 x2
a) Dog fish
b) Sea Horse
16. Name them: 1 x 10
i) Portuguese men of war
ii) Sea anemone
iii) Sea fen
iv) Bath sponge
v) Sea walnuts
vi) King crab
vii) Silkworm
viii) Lac insect
ix) Apple snail
x) Squid.
AHLCON PUBLIC SCHOOL, MAYUR VIHAR – I, DELHI – 110091.
BIOLOGY ASSIGNMENT- CLASS – XI
ASSIGNMENT - V
MORPHOLOGY OF FLOWERING PLANTS.
ONE MARK questions
Q.1 Mention the type of Placentation found in pea.
Q.2 What is scutellum?
Q.3 Spines of Acacia are modified into?
Q.4 Which two sheath encloses the plumule & radical?
2 Marks Questions...
Q.1 What is the function of pulvinus? Give one example of the plant having it.
Q.2 Differentiate between runner & sucker.
Q.3 Mention the function performed by
a) Scale leaf of onion
b) Tap root of radish
Q.4 What is drupe? Give two examples.
3 mark questions.
Q.1 Differentiate between meristematic & permanent tissues.
Q.2 What are bulliform cells. Mention its important function.
Q.3 Draw labeled diagram showing L.S of phloem.
Q.4 Answer the following with reference to the anatomy of monocot stem.
a) How are vascular bundles arranged?
b) How are xylem vessels arranged in each bundle?
c) Vascular bundles are closed ones. What type of tissue is lacking in them?
5 marks questions
Q.1 Describe in detail the Lenticels.
Q.2 Differentiate between the anatomy of a dorsiventral leaf and that of an isobilateral leaf.
Q.3 a) What is venation? Give its types.
b) Describe different types of modification of leaf.
Q.4 Phylloclade & cladode are various modification of stem. Justify with example.
AHLCON PUBLIC SCHOOL, MAYUR VIHAR – I, DELHI – 110091.
BIOLOGY ASSIGNMENT- CLASS – XI
ASSIGNMENT - VI
Anatomy of Flowering Plants
Q.1 What is apical meristem? Mention its important function.
Q.2 What are root hairs? What is their function?
Q.3 What is casparion strip? What function does it?
Q.4 What is phellagen? What does it produce?
Q.5 How are exarch & endarch conditions different anatomically?
Q.6 Answer the following with reference to the anatomy of dicot stem.
i) Were exactl6 are the cambial cell located in the vascular bundle?
ii) What is the name given to such a bundle?
iii) How are xylem vessels arranged?
iv) What type of cells constitute the pith?
Q.7 What are bulliform cells? Mention its important function.
Q.8 Draw T.S. of Dicot root.
Q.9 With the help of well labeled diagram explain secondary growth in dicot stem.
Q.10 Write short notes on
i) Lenticels
ii) Bark
Q.11 Draw V.S of monocot leaf & label it.
Q.12 Draw L.S of phloem, label it & explain every labeling.
Q.13 Draw T.S of Lenticels & label it.
Q.14 Differentiate between
a) Early wood & late wood
b) Soft wood & hard wood
c) Heart wood & sap wood
d) Palisade parenchyma & spongy parenchyma.
Q.15 Why are annual rings comparatively well marked in plants growing in hilly areas then these in coastal areas?
Q.16 State the difference between fibers & sclerid in plant histology? Give one example.
Q.17 How fascicular cambium differs from inter fascicular cambium?
Q.18 Differentiate between the anatomy of a dorsiventral leaf & that of an isobilateral leaf.
Q.19 What do you understand by the term stele?
Q.20 What makes pulp pear gritty?
Q.21 Give two examples of fruits having sclerid
Q.22 What is conjunctive tissue?
Q.23 Differentiate between open & closed vascular bundles.
Q.24 Name the two types of sclerenchyma
Q.25 Draw, bicollateral, opens exarch, vascular bundle.
AHLCON PUBLIC SCHOOL,
MAYUR VIHAR – I, DELHI – 110091
STRUCTURAL ORGANISATION IN PLANTS & ANIMALS.
1. Why are flowers of mustard referred to as hypogynous?
2. Name two plants that produce rhizome.
3. What is heterophylly?
4. What is pulvinus?
5. What is a cladode?
6. Define a flower.
7. What is staminode?
8. What is meant by placenta?
9. What is hilum?
10. What is microphyle in a seed?
11. What happens to ovary & ovule after fertilization?
12. Differentiate between stolen & sucker.
13. What are nodes &internodes?
14. What are stilt roots? Give two examples.
15. What is a Perianth?
16. What are bracteate & ebracteate flowers?
17. Describe basal Placentation along with a diagram.
18. Justify the following statements –
a) Underground parts of a plant are not always roots.
b) Flower is a modified shoot.
19. Differentiate between hypogynous & eponymous flower with an example & diagrams.
20. Write 5 differences between dicot seed & maize grain...
21. Describe the different regions of a root.
22. How do various leaf modifications help plants?
23. What is phyllotaxy?
24. Draw V.S of maize grain
25. What is the function of casparian steps?
26. What is hard wood & soft wood?
27. What is economic use of phloem fibre?
28. What is bark?
29. Differentiate between shoot apex & root apex.
30. What Are lenticels? What is their function?
31. Draw T.S of dicot stem.
32. Explain the process of secondary in stem of woody angiosperm with the help of well labelled schematic diagrams. What is its significance?
33. What are tendons & ligaments.
34. Differentiate between striated & untreated muscle fibers.
35. What is prostomium in the body of pherelima.
36. T.S of mammalian bone. Draw it.
37. How can you differentiate between male & female cockroach?
38. Describe the external features of earthworm.
39. Write short notes on
a) Cletellum
b) Genital papillae
c) 10th thrum
d) Antennae
e) Cuticle
f) Axons.
40. Write notes on a) Endarch b) Exarch.
AHLCON PUBLIC SCHOOL, MAYUR VIHAR – I, DELHI – 110091
CELL
1 Mark
1. What is chemical constitution of algae cell wall?
2. What is the other name of nuclear envelope?
3. Name any two groups of organisms where gas vacuoles are present.
4. Give an example of the smallest cell.
5. Mention four types of chromosomes.
6. What is meant by interphase nucleus?
2 Marks
7. What are the three components of cell envelope in a bacterial cell?
8. What are polyribosome? Mention their functions.
9. Which are cristae? What purpose do they serve?
10. What are plasmodesmata? M Mention its functions.
11. Name the largest & longest cells found in animals.
12. What is endomembrane system? List its components. Define totipotency?
3 Marks
13. What is cell wall? Mention the functions of a plant cell wall?
14. Draw a well labeled diagram of the section of a flagellum.
15. Give significance of glycocalyx.
16. Who proposed the cell theory? Explain it.
17. Describe the structure of ribosomes.
5 Marks
18. Name the various types of plastids. Where fat soluble pigments occur?
19. Where the following structure would be found a cell?
a) Micro lobules
b) Ribosomes
c) Nucleolus
d) Thylalkoids
e) F0-F1 complex.
AHLCON PUBLIC SCHOOL, MAYUR VIHAR – I, DELHI – 110091
CELL STRUCTURE & FUNCTION
1. What is the criteria of classifying the bacteria in two groups gram+ve & gram-ve.
2. What is centrosome?
3. Differentiate between pilli & fimbriae.
4. What are lysosomes? Where are they found?
5. What are plasmids?
6. What is middle lamella? What is it made of?
7. Draw & explain chloroplast.
8. What are plastids? How are they classified on the basis of the types of pigments?
9. Define active site of an enzyme.
10. What is the function of carbonic anhydrate
11. Differentiate between DNA & RNA.
12. What are coenzymes? Give two examples
13. What is an inhibits in enzyme action? Differentiate between prosthetic group & coenzyme
14. What is a) Glycosidic bond b) peptide bond
15. What are nucleosides
16. What are the different functions affecting enzyme action
17. Describe different structural plan of pester
18. Write short notes on
a) Lipids
b) Sugar
c) Oligosaccharides
d) Apoenzyme
e) Secondary structure of poleis
f) Lipo protein
g) Fibrous protein.
19. Differentiate between ligases & lyases.
20. Name two examples for each.
a) Pigments in plants
b) Alkaloids
c) Terpenoids
d) Drugs.
21. Differentiate between cell cycle & cell division
22. What are kinetochores?
23. How metaphase I differ from metaphase II
24. What dyads?
25. What is a cell plate
26. Define a) synapses b) Bivalent
27. With the help of well labelled diagram explain prophase I
28. What is crossing over?
29. What is the significance meosis?
30. What is miter kinesis?
31. List out differences between mitosis & meosis?
32. What is Go phase?