Herbarium and Botanical Gardens — Revision Notes

⚡ 30-Second Revision

Herbarium: — Dried, pressed, preserved plant specimens.
Purpose: — Reference for identification, documentation, taxonomic research.
Process: — Collection $ightarrow$ Pressing $ightarrow$ Drying $ightarrow$ Mounting $ightarrow$ Labeling.
Label Info: — Scientific name, family, locality, date, collector.
Botanical Gardens: — Living plant collections.
Purpose: — Scientific study, ex-situ conservation, education, aesthetics.
Key Examples: — Royal Botanic Gardens, Kew; NBRI, Lucknow; Indian Botanical Garden, Howrah.

2-Minute Revision

Herbaria and botanical gardens are vital taxonomical aids. A herbarium is a collection of dried, pressed, and preserved plant specimens, mounted on standard sheets and systematically arranged. Its main purpose is to serve as a permanent reference for identifying unknown plants, documenting flora, and supporting taxonomic research.

Each sheet carries a detailed label with the plant's scientific name, family, collection details, and collector's information. The preparation involves collection, pressing, drying, mounting, and labeling.

In contrast, botanical gardens maintain living plant collections. Their functions include scientific study, crucial ex-situ conservation of endangered species (growing them outside natural habitats), public education about plant diversity, and horticultural display.

Key examples include Kew and NBRI. Understanding their distinct nature – herbaria with dead specimens for reference, botanical gardens with living specimens for conservation and study – is fundamental for NEET.

5-Minute Revision

Let's quickly review Herbaria and Botanical Gardens, two indispensable taxonomical aids. A herbarium is essentially a 'library' of preserved plant specimens. These specimens are collected from the field, then meticulously pressed and dried to remove moisture and prevent decay.

Once dry, they are carefully mounted onto standard-sized sheets. The most critical part is the labeling, which includes the plant's scientific name, family, common name, collection locality, date, and the collector's name.

These sheets are then systematically arranged, making them invaluable for identifying unknown plants, documenting regional flora, and providing historical data for taxonomic and ecological research. They are a permanent, verifiable record of plant diversity.

Botanical gardens, on the other hand, are specialized gardens that maintain living plant collections. Their roles are multifaceted: they serve as centers for scientific study (providing live material for research), crucial sites for ex-situ conservation (protecting endangered species outside their natural habitats), platforms for public education (teaching about plant diversity and conservation), and often beautiful horticultural displays.

Unlike herbaria, which deal with dead specimens, botanical gardens allow for the study of plants in their living form, observing their growth, development, and ecological interactions. Famous examples include the Royal Botanic Gardens, Kew (UK), and the National Botanical Research Institute (NBRI) in Lucknow, India.

The key distinction for NEET is 'dead, preserved reference' for herbaria versus 'living collection for study and conservation' for botanical gardens.

Prelims Revision Notes

Herbarium & Botanical Gardens: NEET Quick Facts

I. Herbarium:

Definition: — Collection of dried, pressed, and preserved plant specimens, systematically arranged.
Nature of Specimens: — Dead, preserved.
Primary Purpose:

* Reference system for identification of unknown plants. * Documentation of flora (plant diversity) of a region/world. * Material for taxonomic research. * Historical record of plant distribution.

Process of Preparation (CPDML):

1. Collection: Representative parts (flower, fruit, leaf, stem). 2. Pressing: Flattening between absorbent papers in a plant press. 3. Drying: Removing moisture to prevent decay. 4. Mounting: Affixing onto standard herbarium sheets ($41.

5 imes 29, ext{cm}$). 5. Labeling: Crucial step. Label includes: * Scientific name (Genus, species, author) * Family * Common name (if any) * Locality (place of collection) * Date of collection * Collector's name * Habitat description, field notes (e.

g., flower color).

Storage: — In specialized cabinets, often fumigated to prevent pests.
Significance: — Type specimens are housed here, vital for nomenclature.
Example: — Central National Herbarium (CAL), Botanical Survey of India, Howrah.

II. Botanical Gardens:

Definition: — Specialized gardens maintaining living plant collections.
Nature of Specimens: — Living plants.
Primary Purposes:

* Scientific Study & Research: Provide living material. * Ex-situ Conservation: Crucial for protecting endangered species outside natural habitats. * Public Education: Inform about plant diversity, ecology, conservation. * Horticultural Display: Aesthetic value, public appreciation.

Key Features:

* Plants are accurately labeled with scientific name, family, and origin. * Often arranged systematically, ecologically, or geographically. * Require extensive land and specialized horticultural care.

Examples (NCERT-specified):

* Royal Botanic Gardens, Kew (England) - Largest. * National Botanical Research Institute (NBRI), Lucknow (India). * Indian Botanical Garden (now Acharya Jagadish Chandra Bose Indian Botanic Garden), Howrah (India).

III. Key Differences (Herbarium vs. Botanical Garden):

Specimens: — Dead vs. Living.
Space: — Less vs. More.
Conservation: — Indirect (data) vs. Direct (active cultivation).
Primary Focus: — Reference/Documentation vs. Study/Conservation/Education.

Vyyuha Quick Recall

Can Plants Dry More Longer? (For Herbarium Steps)

Collection
Pressing
Drying
Mounting
Labeling