NCERT Solutions for Chapter: The Living World, Exercise 3: SHORT ANSWER TYPE QUESTIONS

International Code of Botanical nomenclature (ICBN) has provided a code for the classification of plants. Give hierarchy of units of classification botanists follow while classifying plants and mention different 'Suffixes' used for the units.

A plant species shows several morphological variations in response to an altitudinal gradient. When grown under similar conditions of growth, the morphological variations disappear, and all the variants have common morphology. What are these variants called?

How do you prepare your own herbarium sheets? What are the different tools you carry with you while collecting plants for the preparation of a herbarium? What information should a preserved plant material on the herbarium sheet provide for taxonomical studies?

What is the difference between flora, fauna and vegetation? Eichhornia crassipes is called as an exotic species while Rauvolfia serpentina is an endemic species in India. What do these terms exotic and endemic refer to?

A plant may have different names in different regions of the country or world. How do botanists solve this problem?

Brinjal and potato belong to the same genus Solanum, but to two different species. What defines them as separate species?

Properties of cell organelles are not always found in the molecular constituents of cell organelles. Justify.

The number and kinds of organisms are not constant. How do you explain this statement?