Living world ....

WORKSHEET – CLASS XI

THE LIVING WORLD

Q.1 Mention distinctive characters of  living organisms

    Growth, reproduction , ability to sense environment , metabolism ,

Q.2 Mention  two  characteristics of growth.

     Increase in mass and increase in number.

Q.3 What is the difference in growth seen in plants and in animals present on earth.?

       In plants growth is continuous throughout their life span  but in animals it is upto certain stage.

Q.4  What  is the difference in growth of living and non – living?

       In non-living, growth is by accumulation of material but in living, it is from inside.

Q.5   What does the term  Reproduction refer to in multicellular organisms ?

     Production of progeny.

Q.6 Name the group of organisms which multiply by fragmentation .

       Fungi& filamentous algae.

Q.7 Name two unicellular organisms  in which reproduction itself is synonymous with growth.

       Amoeba, Chlamydomonas

Q.8 What are metabolic reactions ?

       Chemical reactions occurring  in our body.

Q.9 Define metabolism.

     Sum total of all chemical reactions in body.in our body..

Q.10  How do properties of tissues arise ,though they are not present in the cells?

        By interaction of  living cells.

Q. 11 Define biodiversity.

         Number and types of organisms  present on earth .

Q.13 Define  nomenclature  process.

        Standardised naming of all living organisms.

Q.14 What is identification ?

        Describing of organisms and naming it..

Q.15 Expand  (i) ICBN,   (ii)  ICZN.

       International code of Botanical Nomenclature.

       International code of Zoological  Nomenclature.

Q.16 Mention  two advantages of scientific names.

        1. Ensures that each organism has one name .

        2.Such a name is not used for any other known and identified organism.

Q.17. Define classification.

         The process by which anything is grouped into convenient categories based on some easily observable characters.

Q. 18 What is taxonomy?

       Process of classification  of living organisms in various  taxa.

Q.19 Name  four processes  basic to taxonomy.

       A) Characterisation  B)Identification C) Classiffication  D) Nomenclature.

Q.20. Define systematics.

       Study of relationship among different organisms.

Q.21 Define family.

       A group of related Genera.

Q.22 Define Order.

      Assemblage of families which exhibit a few similar characteristics.

Q.23. What are botanical gardens?

     Specialised gardens having collections of living plants which are labelled with scientific name and its family.

Q.24 What are Zoological parks?

      Places where wild animals are kept in protected environment under human care  which enables us to learn about their food habits and behaviour.

FILL IN THE BLANKS

a) ----------------------- of the body is the defining feature of life forms.      

  A- Cellular organisation.

b)Human being is the only organism  with ------------------A-.   Self –consciousness.

c) Living beings respond to----------------- which can be physical, chemical, or biological .

  A-  External stimuli.

d) All living organisms are------------------, evolving, and self – regulating interactive systems cabable of responding to ---------------

A-  Self – replicating , external stimuli.

e) All living organisms –present, past and future, are linked to one another by sharing of the common ------------------------------------ , but to varying degrees.

     A-  Genetic material.

f)  Scientific name has two components  the ------------------------- name and the ---------------------------epithet.

A-   Generic , specific.

e) ---------------------------------------------is providing a name with two components.

 A-  Binomial Nomenclature.

f) --------------------gave scientific naming of organisms.

A-  Carolus Linneaus.

g) Scientific name of mango is ----------------------  ----------------.

h) Scientific name of  potato is--------------------------  ----------------

i) ) Scientific name of  lion is-----------------------  -----------------

j)  Scientific name of  human being  is --------------------------  ----------------

k) Scientific name of   wheat is ----------------------------------------

l)  Scientific name of house fly is --------------------------  ----------------

A-Mangifera indica, Solanum tuberosum,, Panthera tigris, Homo sapiens, Triticum aestivum,  Musca domestica.

m) First word in a biological name represents the -------------- while second  denotes the -------------epithet.

A- Genus , specific.

n) Both the words in biological name are separately underlined or printed in italics to indicate their --------------------- origin.

 A-  Latin

o)The title of publication of Linneaus is ------------------------------------- (   Systema nature)

p) potato and ginger belong to genus ----------------- (   Solanum)

q) Lion, leopard , and tiger belong to ----------------------------- genus. (Panthera)

r) ) Lion, leopard , and tiger belong to ----------------------------- family. (  Canidae.)

s) Cat and dog belong to --------------------------------- family. (   Canidae.)

t) --------------------- is a store house of collected plant specimens that are dried , pressed , and preserved, on sheets. (Herbarium.)

u) ----------------------------------is a collection of preserved plants and animals. (   Museum)

v) --------------------  is based on contrasting character generally in a pair called couplet. (   Key)

w)  ------------------------  contains the actual account of habitat and distribution of plants in a given area. (    Flora.)

MCQs

1.Which type of organisms reproduce or multiply by cell division

a) unicellular   b)multicellular  c) prokaryotic   d) eukaryotic            -       (a)

2 Fungi  reproduces by  a) egg  b) sperm   c) gemmules   d) spores.    -     ( d)

3.   .Yeast and Hydra reproduce by   a) conidia  b) budding  c) spores  d) fragmentation.      -        (b0

4      Planaria reproduces by    a) spores   b) budding   c) regeneration     d) conidia            -       (c)

5. Biological names are written in    a)English     b) german   c) French   d) latin             -        (d)

6 .Each category  in classification is termed as    

 a)  genus   b) species c) taxon   d) class         -     (c)

7. Lowest category of classification is       a) species   b) order  c) genus d) class              -         (a)