Biology Class 11 Test

Chapters: 1. The Living World & 2. Biological Classification

Time: 45 Minutes

Max Marks: 25

Name: ________________________

Roll No.: ________

Date: _________

Section A: Multiple Choice Questions (15 × 1 = 15 Marks)

Instructions: Choose the single correct answer for each question.

1. The scientific name of the mango tree is Mangifera indica (L.). What does the letter 'L.' in the bracket signify?

a) The name was accepted by Linnaeus b) The name was first given by Linnaeus c) The name is in Latin d) The name is provisional

2. Which of the following is not a characteristic of living organisms?

a) Metabolism b) Consciousness c) Cellular organization d) Isolated metabolic reactions in vitro

3. The term 'systematics' refers to:

a) The study of classification systems b) The study of evolutionary relationships among organisms c) The study of diversity of organisms and their comparative and evolutionary relationships d) Naming and grouping of organisms

4. In the taxonomic hierarchy, which group is immediately below a 'Class'?

a) Order b) Family c) Genus d) Phylum (for animals) / Division (for plants)

5. The famous botanical garden 'Kew' is located in:

a) India b) USA c) England d) France

6. Which kingdom proposed by Whittaker includes unicellular, eukaryotic, photosynthetic organisms?

a) Monera b) Protista c) Fungi d) Plantae

7. Diatoms have a cell wall made up of:

a) Cellulose b) Chitin c) Silica d) Calcium carbonate

8. The structure used for locomotion in Euglenoids is:

a) Cilia b) Flagella c) Pseudopodia d) They are non-motile

9. Which of the following is a symbiotic association of fungi with algae?

a) Mycorrhiza b) Lichen c) Slime mould d) Mushroom

10. The cell wall of fungi is primarily composed of:

a) Peptidoglycan b) Cellulose c) Chitin d) Polysaccharides and amino acids

11. Which group of organisms are known as 'jokers of the plant kingdom'?

a) Dinoflagellates b) Euglenoids c) Diatoms d) Slime Moulds

12. The red colour of the Red Sea is due to the blooming of:

a) Diatoms b) Euglena c) Gonyaulax d) Noctiluca

13. Viroids differ from viruses in having:

a) DNA without a protein coat b) RNA with a protein coat c) RNA without a protein coat d) DNA with a protein coat

14. Archaebacteria that thrive in extremely salty environments are called:

a) Methanogens b) Thermoacidophiles c) Halophiles d) Cyanobacteria

15. Which of the following is a pair of viral diseases?

a) Typhoid and Tuberculosis b) Common Cold and AIDS c) Malaria and Amoebiasis d) Cholera and Tetanus

Section B: Short Answer Questions (10 × 1 = 10 Marks)

Instructions: Answer the following questions briefly.

1. Differentiate between species and taxon.

2. What is the basis of Whittaker's five-kingdom classification?

3. Why are cyanobacteria also called blue-green algae?

4. Explain the importance of botanical gardens.

5. Give two examples of viral diseases in plants.

6. What are the peculiar features of Euglenoids?

7. Differentiate between viruses and viroids.

8. Why are slime molds called fungus animals?

9. What is the function of the heterocyst in cyanobacteria?

10. Explain the process of reproduction in diatoms.