Plant kingdom .....

CLASS  X1

PLANT KINGDOM

 

WORKSHEET     FILL ,IN THE BLANKS                                                                                                       

1, Father of taxonomy   is -------------------------                                                              Carolus  Linnaeus

2. Binomial nomenclature   is    put forward by -------------------------------------------- Carolus Linnaeus

3. Similar gametes are called---------------------------------------------------    isogametes

4.First stage in the lifecycle  of moss plant   is --------------------------------------- protonema

5.In  angiosperm ,  reduction division takes place in   micro and -----------------------------megasporogenesis

6.----------------is a fungus which can be used as food mushroom……………………….agaricus

 7When an organism passes through   two lifecycle (sporophytic & gametophytic) it is called as -------------alternation of generation

8.Second  gametophytic  generation in moss plant is called---------  leafy stage-

9, Classification  based on cytological information is called---------    cytotaxonomy

 10.Fusion of one large non motile  female gamete and one small motile gamete is called ----     oogamy

--11-………………..is a motile unicellular alga                                      Chlamydomonas

12. Agar is obtained from ………………..Gelidium

       13………….. is   the   classification using computers based on all observable characters.           Numerical taxonomy     

 

PLANT KINGDOM

Worksheet-1mark   questions

Answer the following   questions

 

1.Name a unicellular  organism

             which can be used  as  food  ,-yeast-

Ans,--because for their fertilization water is essential

2,Bryophytes are called as  amphibians, of the world,Why?

3.What are the two    words in scientific name           -genus&species

4,What is the differences between zoospores and gametes -z oospores are asexual spores  produced by lower organism like algae and fungi  and gametes are sexual motile spores.

5,Why bryophytes produce more number of male gametes?---chances to reach male gamete is less &

 water is not their  it will drying up

6.What are the names of the sexual reproductive organs of bryophyte

Ans.Antheridia  &  archegonia

7,Which  type of lifecycle pattern is present   in algae---haplontic

  .8,.,.Which group  plants are called precursor of seed habit?----Pteridophytes

9.On what basis we can classify angeosperms?-----based on the number of cotyledons  in the seed

10Why is double fertilization    takes place in angeosperms 

Ans.One pollengrain produces two male gametes ,one fuses with egg and second one with polar nuclei.so

12,Wh at is haplo-diplontic     lifecycle pattern----    An intermediate lifecycle pattern which is present in bryophytes

13What are the cells present in in an egg apparatus---  egg cell& two  synergids

14.WhyLinneus classification is called artificial system of classification---It  is based  on vegetative charecters  only

16,What is gametophyte----Plants which produce  gametes or sexual reproduction

17.What is sporophyte-----Pla nts which produce   spores or  undergoes asexual reproduction

18.How can we classify   algae—chlorophyceae,-Phaophyceae,Rhodophyceae

19.On what basis algae are classified ?

based on photosynthetic pigments,stored food,nature of cellwall

20,Write a major difference between   gymnosperm    & angiosperm----In angiosperm seeds are covered(within fruit)where as gymnosperms are  naked(not cover