EPP 2, Class- 11 chapter 2, biology classification by bk sir

 URMILA SCIENCE ACADEMY 

BY - B.k. sir

Class 11 – Biology

Chapter 2 – Biological Classification

Important Questions with Answers

PART – A : Objective Type Questions

1. Fill in the Blanks

1. The five kingdom classification was given by R.H. Whittaker (1969).

2. The two kingdom classification was proposed by Carolus Linnaeus.

3. Cyanobacteria are also called blue-green algae.

4. The cell wall of fungi is made up of chitin.

5. Viruses are made up of nucleic acid and protein coat.

6. Methanogens are found in the rumen of cattle.

7. Lichens are symbiotic association of algae and fungi.

8. Viroids were discovered by Theodore O. Diener.

2. Multiple Choice Questions (MCQs)

1. Viruses are:

a) Prokaryotes

b) Eukaryotes

c) Both

d) Neither

✅ Answer: d) Neither

2. Five kingdom classification was proposed by:

a) Haeckel

b) Whittaker

c) Linnaeus

d) Aristotle

✅ Answer: b) Whittaker

3. The cell wall of bacteria contains:

a) Cellulose

b) Peptidoglycan

c) Chitin

d) Lignin

✅ Answer: b) Peptidoglycan

4. Euglena is a connecting link between:

a) Plants and Algae

b) Animals and Bacteria

c) Plants and Animals

d) Fungi and Animals

✅ Answer: c) Plants and Animals

5. Halophiles belong to:

a) Eubacteria

b) Archaebacteria

c) Cyanobacteria

d) Protista

✅ Answer: b) Archaebacteria

3. True / False

1. Mycoplasma lack a cell wall. — ✅ True

2. Nostoc is a cyanobacterium. — ✅ True

3. Viruses are obligate parasites. — ✅ True

4. Fungi are autotrophic. — ❌ False

5. Euglena is always autotrophic. — ❌ False

5. Assertion–Reason

1. Assertion (A): Fungi are heterotrophic.

Reason (R): They lack chlorophyll.

✅ Both A and R are true, and R explains A.

2. Assertion (A): Cyanobacteria are prokaryotic.

Reason (R): They lack a true nucleus.

✅ Both A and R are true, and R explains A.

PART – B : One Liner Questions

1. Who is called “Father of Taxonomy”? → Linnaeus

2. What is the study of fungi called? → Mycology

3. Give one example of Archaebacteria. → Methanogens

4. Which organisms cause red tides? → Dinoflagellates

5. Name the smallest living cell. → Mycoplasma

PART – C : Very Short Answer (1 Mark)

1. Define lichen. → Symbiotic association of algae and fungi.

2. What is genetic material in retroviruses? → RNA

3. Name any two unicellular eukaryotes. → Euglena, Amoeba

4. Write one feature of Archaebacteria. → They survive in extreme environments.

5. What is the composition of fungal cell wall? → Chitin and polysaccharides

PART – D : Short Answer (2–3 Marks)

1. Differentiate between Monera and Protista.

Monera: Prokaryotic, no nucleus, e.g. Bacteria.

Protista: Eukaryotic, true nucleus, e.g. Amoeba.

2. What are slime moulds? → They are saprophytic protists, body is a plasmodium, form spores in unfavorable conditions.

3. Write two uses of methanogens. →

Produce methane gas (biogas).

Help in digestion in cattle.

4. Differentiate between Viruses and Viroids.

Viruses: Nucleic acid + protein coat.

Viroids: Only RNA without protein coat.

5. Why is mycoplasma called “Joker of Plant Kingdom”? → It lacks cell wall, can survive without oxygen, and has unusual features.

PART – E : Long Answer (4–5 Marks)

1. Explain the five kingdom classification.

Proposed by R.H. Whittaker (1969).

Basis: Cell structure, body organization, mode of nutrition, reproduction, phylogeny.

Kingdoms: Monera, Protista, Fungi, Plantae, Animalia.

2. Groups of fungi with examples:

Phycomycetes → Mucor

Ascomycetes → Yeast

Basidiomycetes → Mushroom

Deuteromycetes → Alternaria

3. General features of Protista:

Unicellular eukaryotes.

Motile with cilia/flagella.

Examples: Amoeba, Paramecium, Euglena.

PART – F : Very Long Answer (6–8 Marks)

1. Describe Kingdom Monera in detail.

Prokaryotic, unicellular, no nucleus, cell wall with peptidoglycan.

Includes bacteria, archaebacteria, cyanobacteria.

Modes: autotrophic, heterotrophic, saprophytic.

2. Essay on Viruses, Viroids and Prions.

Virus: Nucleic acid + protein coat, obligate parasite.

Viroid: RNA without protein coat, e.g. Potato spindle tuber disease.

Prion: Proteinaceous infectious particles, e.g. Mad cow disease.

3. Fungi – ecological & economic importance:

Decomposers, symbionts (lichens/mycorrhiza), used in medicine (antibiotics), food industry (alcohol, bread).

PART – G : Diagram Based Questions

1. Draw and label:

Bacteriophage

Shapes of bacteria (Coccus, Bacillus, Spirillum, Vibrio)

Euglena / Amoeba / Paramecium 

BY - B.K. SAMOTYA SIR 

( Omnibiora.blogspot.com )

Youtube channel - URMILA SCIENCE ACADEMY 

(  @biologybybk  )