MODEL EXAMINATION JANUARY-2014
BOTANY
STD:XI
Max.Mark:30
Time:1 HR
I.
By observing the given pair and answer the questions.
(a) RibosomesProtein Synthesis
Peroxisomes……………………..
(b) RhodophyceaePhycoerythrin
Phaeophyceae-………………………
score-1
II.
Fill the missing word.
a. Banyan tree:---------root::Sugarcane:stilt root.
b. Citrus:------------::Cucumber:tendril
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III.
In Eubacteria, some of the organism have specialized cells to fix Nitrogen. Name
the structure with example.
Score-1
IV.
Which is the asexual reproductive structure in Liverworts and how its sporophyte
differentiated?
Score-2
V.
The floral formula of a family is %0K(5)C1+2+(2)A(9)+1G-1
a. Identify the family
b. Write the features of both Androecium and Gynoecium.
Score-2
VI.
i. Name the organelle where protein synthesis, synthesis of lipid and secretions
occur.
ii. Mention the function of Golgi apparatus.
Score-2
VII. Find out what do the terms algal bloom and red tides signify?
Score-2
VIII.
IX.
Give reason.
a. Both gymnosperm and angiosperm bear seeds, then why are they classified
separately.
b. Why pteridophytes considered as a precursor of seed habit.
Score-3
X.
Given below is the ground plan of a stem.
a. Explain the feature of vascular bundle in the given figure.
b. Differentiate between the vascular bundle of both the types of stem.
X.
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a. Identify the structure.
b. What type of arrangement is the figure posses ?
c. What are basal bodies?
XI. Name the stage of cell division the following take place,
a. Chromosome moved to spindle equator.
b. Centromere split and chromatids separate.
c. Pairing between homologous chromosome take place.
XII. Define the following with examples.
a. Parthenocarpic fruit
b. Coleorhiza
c. Apocarpous
Score-3
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Score-3
XIII. In living organisms at gamete formation meiosis takes place. So the gametes
produced are Haploid
(a ) In which stage of meiosis chromosome number will be reduced to half ?
(b) What is Synapsis?
(c ) In which Stage crossing over takes place?
(d) What is crossing over
score-4