CBSE/NCERT/Exercises/Class_11_Biology
Created by Titas Mallick
Biology Teacher • M.Sc. Botany • B.Ed. • CTET (CBSE) • CISCE Examiner
BioNotesBioNotesCreated by Titas Mallick
Biology Teacher • M.Sc. Botany • B.Ed. • CTET (CBSE) • CISCE Examiner
Online
Exercises and Questions on Biological Classification - NCERT Class 11 Biology
Subject: Biology
Class: 11
Topic: Biological Classification
The main criterion for the five kingdom classification was NOT: a) Cell structure b) Mode of nutrition c) Phylogenetic relationships d) Geographical location
Which kingdom includes all prokaryotic organisms? a) Monera b) Protista c) Fungi d) Animalia
'Diatomaceous earth' is formed by the cell wall deposits of: a) Dinoflagellates b) Chrysophytes c) Euglenoids d) Slime moulds
Red tides are caused by: a) Amoeba b) Gonyaulax c) Euglena d) Plasmodium
The cell wall of fungi is composed of: a) Cellulose b) Chitin c) Pectin d) Silica
Which group of fungi is commonly known as 'imperfect fungi'? a) Phycomycetes b) Ascomycetes c) Basidiomycetes d) Deuteromycetes
Viruses contain: a) Only DNA b) Only RNA c) Either DNA or RNA d) Both DNA and RNA
Who discovered viroids? a) Dmitri Ivanowsky b) M.W. Beijerinck c) W.M. Stanley d) T.O. Diener
Lichens are symbiotic associations between: a) Algae and Bacteria b) Algae and Fungi c) Fungi and Roots d) Bacteria and Viruses
Prions consist of: a) Genetic material only b) Abnormally folded proteins c) Protein-rich layer d) RNA only
1. Discuss how classification systems have undergone several changes over a period of time?
2. State two economically important uses of: (a) heterotrophic bacteria (b) archaebacteria
3. What is the nature of cell-walls in diatoms?
4. Find out what do the terms ‘algal bloom’ and ‘red-tides’ signify.
5. How are viroids different from viruses?
6. Describe briefly the four major groups of Protozoa.
7. Plants are autotrophic. Can you think of some plants that are partially heterotrophic?
8. What do the terms phycobiont and mycobiont signify?
9. Give a comparative account of the classes of Kingdom Fungi under (i) nutrition (ii) reproduction.
10. What are the characteristic features of Euglenoids?
11. Give a brief account of viruses with respect to their structure and nature of genetic material. Also name four common viral diseases.
12. Are viruses living or non-living?