An important bamboo species found in Nagaland is:

Dendrocalamus strictus
Bambusa vulgaris
Melocanna baccifera
Phyllostachys edulis

The correct answer is: a) Dendrocalamus strictus.

Dendrocalamus strictus is a species of bamboo that is found in the Indian subcontinent, Southeast Asia, and China. It is a tall, fast-growing bamboo that is used for a variety of purposes, including construction, furniture making, and papermaking.

Bambusa vulgaris is another species of bamboo that is found in the Indian subcontinent, Southeast Asia, and China. It is a smaller, slower-growing bamboo that is used for a variety of purposes, including food, medicine, and handicrafts.

Melocanna baccifera is a species of bamboo that is found in India, Bangladesh, Myanmar, Thailand, Laos, Cambodia, Vietnam, Malaysia, Indonesia, and the Philippines. It is a tall, fast-growing bamboo that is used for a variety of purposes, including construction, furniture making, and papermaking.

Phyllostachys edulis is a species of bamboo that is found in China. It is a tall, fast-growing bamboo that is used for a variety of purposes, including construction, furniture making, and papermaking.

Dendrocalamus strictus is the most important bamboo species found in Nagaland. It is a tall, fast-growing bamboo that is used for a variety of purposes, including construction, furniture making, and papermaking.