Biological Classification | Previous Year Questions | 2010 to 2014

BIOLOGICAL CLASSIFICATION

Previous Year Questions & Answers

2010 March

1. By observing the relationship of the first pair, fill in the blanks in the second one:
a. Ascomycetes: Saccharomyces and Penicillium
b. Basidiomycetes: .................... and .................... (1)

Answer: Agaricus, Ustilago, Puccinia (Any two).

2010 September

1. Observe the relationship between the words of the first sentence and fill the second one: (1)

• Archaebacteria growing in salty areas – Halophiles
• Archaebacteria growing in hot springs – ....................
• Association of fungus with algae – Lichens
• Association of fungus with roots of plants – ....................

Answer:
1. Thermoacidophiles
2. Mycorrhiza

2011 March

1. Fill up the second part by observing the relationship of the first part: (1)
a. Monera – Prokaryote | Protista – ....................
b. Bacteria live in extreme salty areas – Halophiles
c. Bacteria live in marshy areas – ....................

Answer:
a. Eukaryote
c. Methanogens

2011 October

1. Fill in the blanks:
a. Fusion of protoplasm is called plasmogamy. Fusion of 2 nuclei is called .................... (½)
b. Nuclear membrane is present in Plantae. Nuclear membrane is absent in .................... (½)

Answer:
a. Karyogamy
b. Monera (or Prokaryotes)

2012 March

1. Evaluate the statement: (1)
"Diatoms, the chief producers in the oceans, are useful to us even after their death."

Answer: True Statement.
Explanation: The cell walls of diatoms contain silica, making them indestructible. They accumulate to form 'Diatomaceous earth,' which is used in polishing and filtration of oils and syrups.

2012 September

1. Based on the relationship fill in the blanks: (½)
Euglena: Protista | Mycoplasma: ....................

2. Suggest the correct scientific term for the following: (½)
Algal partner in lichens: ....................

Answer:
1. Monera
2. Phycobiont

2013 September

1. Observe the relationship between the first pair and fill up the blanks: (1)
a. Carolus Linnaeus – Two kingdom classification | R.H Whittaker – ....................
b. Thermoacidophiles – Extreme heat | Halophiles – ....................

Answer:
a. Five Kingdom Classification
b. Salty areas

2014 March

1. Identify the statement which is applicable to Cyanobacteria: (1)

1. Important decomposers
2. Form blooms in polluted water
3. Presence of prominent nucleus
4. Completely lack of a cell wall

Answer: (b) Form blooms in polluted water

2014 August

1. Name one word for the following: (1)
a. Symbiotic association of algae and fungi.
b. Viruses that attack bacteria.

2. How is mycorrhizal association helpful to plants? (2)

Answer:
1. a) Lichen, b) Bacteriophage

2. Benefits of Mycorrhizae:
- Absorption of phosphorus from soil.
- Resistance to root-borne pathogens.
- Tolerance to salinity and drought.