From evolutionary point of view, tracheids and sieve cells are more primitive than tracheae and sieve tubes respectively. The angiosperms have

Question

From evolutionary point of view, tracheids and sieve cells are more primitive than tracheae and sieve tubes respectively. The angiosperms have (A) tracheae and sieve tubes (B) tracheids, tracheae and sieve tubes (C) tracheae, sieve cells and sieve tubes (D) tracheids, tracheae and sieve cells

Tardigrade Admin · Accepted Answer

In angiosperms, xylem consists tracheids , vessel or tracheae, xylem fibres and xylem parenchyma. Tracheae are absent in ptendophytes and gymnosperms. In angiospermic phloem, sieve elements are sieve tubes, while in gymnosperms and pteridophytes sieve cells are found.

Q. From evolutionary point of view, tracheids and sieve cells are more primitive than tracheae and sieve tubes respectively. The angiosperms have

tracheae and sieve tubes

tracheids, tracheae and sieve tubes

tracheae, sieve cells and sieve tubes

tracheids, tracheae and sieve cells

In angiosperms, xylem consists tracheids , vessel or tracheae, xylem fibres and xylem parenchyma. Tracheae are absent in ptendophytes and gymnosperms. In angiospermic phloem, sieve elements are sieve tubes, while in gymnosperms and pteridophytes sieve cells are found.