September 26, 2015

Junior Inter Botany Important 2 Marks Questions of 1-4 Chapters

Q: What does ICBN stand for?
A: ICBN stands for International Code for Botanical Nomenclature.

Q: What is flora?
A: Flora is a book that contains the actual account of habitat,
distribution and systematic listing of plants of a given area.

Q: Define metabolism. What is the difference between anabolism and catabolism?
A: Metabolism is the sum total of all chemical reactions occurring in
the body of a living organism. Anabolism refers to the synthesis of
bigger molecules from small molecules during chemical reactions. In
one way it is a constructive process. Catabolism is the breakdown of
bigger molecules into smaller ones. It is a destructive or lytic
process.

Q: Which is the largest botanical garden in the world? Name a few well
known botanical gardens in India.
A: Largest botanical garden in the world - (Royal) Botanical garden or Kew
botanical garden - England.
Botanical gardens in India: Indian
Botanical garden - Howrah, National
Botanical Research Institute - Lucknow.

Q: Define the terms couplet and lead in taxonomic key.
A: A pair of contrasting characters in a key is called a couplet.
Each statement in the key is called a lead.

Q: What is the basic unit of classification? Define it.
A: Species is the basic unit of classification. Species is a group of
individual organisms with fundamental similarities.

Q: What is growth? What is the difference between the growth in living
organisms and growth in non-living objects?
A: Increase in mass and volume of an individual is called growth.
Growth in living organisms is internal which occurs by cell division.
Growth in non-living objects is external that is by accumulation of
materials outside.

Q: What is the nature of cell-walls in diatoms?
A: The cell wall in diatoms is made up of two overlapping halves
called epitheca and hypotheca which give the appearance of a soapbox.
It is made up of hard and indestructible silica.

Q: How are viroids different from viruses?
A: Viroids differ from viruses in lacking a protein coat.
Ex: Potato spindle tuber viroid. Viroid contains only nucleic acid
(RNA) whereas virus contains nucleic acid and protein coat.

Q: Give the scientific name of Mango. Identify the generic name and
specific epithet.
A: Mango - Mangifera indica
Generic name - Mangifera
Specific epithet - indica

Q: Give two examples for unicellular, colonial and filamentous algae. (2 Marks)
A: Chlamydomonas - unicellular alga.
Volvox - colonial alga
Spirogyra and Ulothrix - filamentous alga.

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