The cluster of leaves arised from short underground pineapple stems are known as

Solution (By Examveda Team)

The cluster of leaves that arise from short underground pineapple stems is known as Radicle.
Radicles are the specific form of leaves in a cluster directly emerging from the short stem that is underground like a crown for example in pineapples.
It has 30 or more, narrow, fleshy, trough-shaped leaves that are 30 to 100 long, surrounding a thick stem; the leaves have sharp spines along the margins. In the first year of growth, the axis lengthens and thickens, bearing numerous leaves in close spirals. After 12 to 20 months, the stem grows into a spike-like inflorescence up to 15 cm long with over 100 spirally arranged, trimerous flowers, each subtended by a bract.