Phloem
Trending Questions
Q.
Phloem is also called as
Q. All the following statements regarding sieve tube elements are true except
- Their end walls have perforated sieve plates which become impregnated with lignin at maturity
- They posses peripheral cytoplasm
- Distinct proteinaceous inclusions, the P-proteins are seen evenly distributed throughout the lumen
- Long, slender, tube-like structures arranged in longitudinal series
- They are devoid of nucleus at maturity
Q. What is the direction of movement of sugars in phloem?
- Bi-directional
- Non-multidirectional
- Upward
- Downward
Q.
Which among the following includes the components in phloem of angiosperms?
Sieve cells, parenchyma and sclerenchyma
Sieve tubes, companion cells, phloem parenchyma and phloem fibers
Sieve tubes, collenchyma and sclerenchyma
Sieve cells, vessels, parenchyma and sclerenchyma