Create a dichotomous key to identify specimens A-H: Hibiscus, Fern Plant, Maize Plant, Groundnut Plant, Earthworm, Sea Anemone, Euglena, Spirogyra.

Here is a dichotomous key for the given specimens A-H:

Specimens:
A: Hibiscus
B: Fern Plant
C: Maize Plant
D: Groundnut Plant
E: Earthworm
F: Sea Anemone
G: Euglena
H: Spirogyra

Dichotomous Key:

1a. Organism is unicellular. Go to 2
1b. Organism is multicellular. Go to 3

2a. Unicellular organism has a flagellum and chloroplasts. $\boxed{\text{G: Euglena}}$
2b. Unicellular organism is filamentous and photosynthetic. $\boxed{\text{H: Spirogyra}}$

3a. Multicellular organism is a plant (autotrophic, has cell walls). Go to 4
3b. Multicellular organism is an animal (heterotrophic, no cell walls). Go to 7

4a. Plant reproduces by spores; no flowers or seeds. $\boxed{\text{B: Fern Plant}}$
4b. Plant produces flowers and seeds. Go to 5

5a. Plant has parallel venation in leaves and fibrous roots (monocot). $\boxed{\text{C: Maize Plant}}$
5b. Plant has net venation in leaves and a taproot (dicot). Go to 6

6a. Plant is a shrub with large, showy flowers. $\boxed{\text{A: Hibiscus}}$
6b. Plant is a herb that produces pods underground. $\boxed{\text{D: Groundnut Plant}}$

7a. Animal has bilateral symmetry and a segmented body. $\boxed{\text{E: Earthworm}}$
7b. Animal has radial symmetry and is sessile. $\boxed{\text{F: Sea Anemone}}$