HORTICULTURE

Detailed explanation-1: -Hence, tracheids are not an element of phloem tissue, so the correct option is (1) Tracheids. Note: Phloem parenchyma is also a part of phloem tissue, these cells are like ordinary parenchyma and are living. They are intermingled with Sieve tubes.

Detailed explanation-2: -Sieve tube members and companion cells are connected through plasmodesmata.

Detailed explanation-3: –Option D: Sieve cells consist of sieve pores at end walls that are important for transport in many seedless vascular plants and gymnosperms. Sieve pores are absent in sieve tubes. So, option D is correct.

Detailed explanation-4: -It is a complex permanent tissue found in plants. It is the food conducting element of plants. It has four elements, namely, companion cells, sieve tubes, phloem parenchyma, and phloem fibres.