In biological terms, species is the basic taxonomical rank. It can be defined as a group of similar organisms that are capable of interbreeding under natural conditions to produce fertile offsprings. Therefore, a group of similar individuals that are respectively isolated form a species.
Species can also be defined as group of individuals that share the same gene pool.
Column I | Column II | ||
a. | Herbarium | i. | It is a place having a collection of preserved plants and animals. |
b. | Key | ii. | A list that enumerates methodically all the species found in an area with brief description aiding identification. |
c. | Museum | iii. | Is a place where dried and pressed plant specimens mounted on sheets are kept. |
d. | Catalogue | iv. | A booklet containing a list of characters and their alternates which are helpful in identification of various taxa. |
Figures 9.20(a) and (b) refer to the steady flow of a (non-viscous) liquid. Which of the two figures is incorrect ? Why ?