SSC
BIOLOGY
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
Which of the following are true of phloem tissue?I. plasmodesmata separate each sieve elementII. companion cells contain many mitochondria for active transportIII. the lumen of sieve elements has no organelles
|
|
I and II only
|
|
|
I and III only
|
|
|
II and III only
|
|
|
I, II and III
|
Explanation:
Detailed explanation-1: –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-2: -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.
There is 1 question to complete.