Jainism ke anusar, “dandak” yaani ki reedh ki haddi (vertebral column) ke aadhaar par jeevon ka vibhajan kiya jaata hai. Bina dandak ke jeev ko “ekendriya” ya ekindriya (one-sensed beings) kehte hain. Inmein reedh ki haddi nahi hoti.

Jain darshan ke mutabiq bina dandak ke jeev ya ekindriya jeev panch prakaar ke hote hain:

1. Prithvikaya (mitti ke jeev)
2. Apkaya (pani ke jeev)
3. Teukaya (agni ke jeev)
4. Vayukaya (hawa ke jeev)
5. Vanaspati kaya (paudhe, vanaspati ke jeev)

In sab mein sirf sparsh indriya (touch sense) hota hai aur inmein reedh ki haddi nahi hoti.

Is prakar, bina dandak ke jeev ekindriya jeev hain, jaise mitti, pani, agni, hawa, aur paudhe.