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Biology XI

Mrs.SARALA  N

HOME WORK NO.1

Date of submission-30.6.10

Q.1.What is binomial nomenclature? Who put forward it? What are the guidelines for naming an organism?

Q.2.What is taxonomic hierarchy? Illustrate with an example.

Q.3.Differentiate between Herbarium & botanical garden.

Q.4.Write any five plants or animals & write their scientific names.

 

HOME WORK NO.2

Date of submission 8.7.10

Q.1.Who put forward Five kingdom classification? What are the criteria for this classification? What are the five kingdoms? Explain each one,.

Q.2.What are the drawbacks of two kingdom classification?

Q.3. Differentiate  between  (a)mycorrhyza  & mycoplasma

                (b) isogamy  & anisogamy

                ©  plasmogamy &karyogamy

                (d) phycobiont & mycobiont

Q.4.What is a  dikaryon?

 

HOMEWORK NO..3

Date of submission 17.7.10

Q.1.Differentiate between    (a)chemotaxonomy &  cytotaxonomy

                                              (b)bryophyte & pteridophyta

                 © gymnosperm & angiosperm.

Q.2.What is double fertilization? Explain.

Q.3.What is holdfast?

Q.4. Compare rhodophyceae , phaeophyceae  & chlorophyceae

Q.5.Explain haplontic , diplontoc & haplo diplontic  life cycle with the help of schematic diagram.

 

HOME WORK NO.4

Date of submission-26.4.10

Q1.Differentiate between   (a)radial symmetry & bilateral symmetry

           (b)coelomate & pseudocoelomate

           © oviparous & viviparous

            (d) hoemocoel & spongocoel

            (e)diploblastic  & triploblastic

Q.2.What are the common characters of phylum chordata’

 

HOME WORK NO.5.

Date of submission-2.8.10

Solve the question paper of unit test  1  and submit

 

HOMEWORK NO.6.

Date of submission-10.8.10

Q.1.Differentiate between(a) tap root system & adventitious root system

            (b) prop root & stilt root.

             ©  cymose inflorescence & racemose inflorescence 

Q.2.What is phyllotaxy? What are the different types? Give example.

Q3.With the help of diagram explain hypogynous, epigynous  & perigynous flowers

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