Tools which help the scientists in studying about plants and animal species are called taxonomical aids. Taxonomical aids include either live species of plants or animals or preserved remains. In case of animals; museum specimens are kept under proper preservation. In case of plants, herbariums are used for the keeping preserved specimens. 

Importance of Herbarium: Herbarium works as a repository of specimens for future reference. This also includes detail information about classification of a particular specimen. In many cases, herbarium serves as a quick referral system while studying about a particular species or about a higher taxonomical level. Herbarium is convenient to make and easier to maintain. It is also easy to transport a herbarium. Importance of Museums: Museums have much wider collection of plants and animal specimen. Museums may also have skeletons of many extinct animals. Thus, a museum offers more options of finding rich information while studying about a plant or animal.

Museums are usually maintained by educational institutions and thus they serve as important tool of study for students as well as for the scientists’ community. Role of Botanical and Zoological Parks in Conserving Biodiversity: Botanical and Zoological Parks serve the very important purpose of conserving the biodiversity. A botanical or zoological park is probably the most secure place for plants and animals to  live in their natural habitat. Especially trained personnel take good care of plants and animal species. They also carry out selective breeding of various plants and animals to
maintain the continuity of a particular species. Moreover, proper treatment is available in case some disease afflicts the plants and animals in such parks. Thus, it can be said that botanical and zoological parks play important role in conserving biodiversity.