PYQSide ExamsMy practice

Transport in Plants · Question 34

AIPMT 2001MCQEasy📈 Topic in 12% papers+4−1
1

Loading of phloem is related to

  1. increase of sugar in phloem cell
  2. elongation of phloem cell
  3. separation of phloem parenchyma
  4. strengthening of phloem fiber

Answer

(1) increase of sugar in phloem cell

Solution

As per NCERT, at the source glucose is converted to sucrose, which is moved into the companion cells and then into the living phloem sieve tube cells by active transport. This is phloem loading.

It increases the concentration of sugar in the phloem cells, producing a hypertonic condition that draws in water and builds up pressure.

Answer: (1)

Out of syllabusAIPMT 2001

Keep practising — Transport in Plants

2

The movement of ions against the concentration gradient will be

  1. active transport
  2. osmosis
  3. diffusion
  4. all of the above
Out of syllabusAIPMT 2000

All Transport in Plants PYQs →

PDFDownload Transport in Plants PYQs as PDF Free, with answer key and a QR code to every solution — print it or study offline⬇
All NEET Botany chapters
Class 11The Living WorldBiological ClassificationPlant KingdomMorphology of Flowering PlantsAnatomy of Flowering PlantsCell: The Unit of LifeCell Cycle and Cell DivisionTransport in PlantsMineral NutritionPhotosynthesis in Higher PlantsRespiration in PlantsPlant Growth and Development
Class 12Reproduction in OrganismsSexual Reproduction in Flowering PlantsPrinciples of Inheritance and VariationMolecular Basis of InheritanceStrategies for Enhancement in Food ProductionMicrobes in Human WelfareOrganisms and PopulationsEcosystemBiodiversity and ConservationEnvironmental Issues
Other chaptersBiomolecules (Biology)