PYQSide ExamsMy practice

Anatomy of Flowering Plants · Question 74

AIPMT 2003MCQMedium📈 Topic in 38% papers+4−1
1

Diffuse porous wood is characteristic of those plants which are growing in :

  1. Tropics
  2. Temperate climate
  3. Alpine region
  4. Cold winter regions

Answer

(1) Tropics

Solution

In diffuse porous wood the vessels are of nearly uniform size and are scattered evenly through the whole growth ring.

∵ In the tropics the climate is uniform throughout the year, the cambium stays active all the time and forms similar vessels; there is no sharp difference between spring wood and autumn wood.

In temperate, alpine and cold-winter regions, as per NCERT, the cambium is very active in spring (wide vessels, early wood) and less active in winter (narrow vessels, late wood), giving ring porous wood with distinct annual rings.

∴ Diffuse porous wood is characteristic of plants growing in the tropics.

Answer: (1)

AIPMT 2003

Keep practising — Anatomy of Flowering Plants

2

The cells of the quiescent centre are characterised by :

  1. Having light cytoplasm and small nuclei
  2. Dividing regularly to add to tunica
  3. Having dense cytoplasm and prominent nuclei
  4. Dividing regularly to add to the corpus
AIPMT 2003
3

Which of the following statements is true ?

  1. Tracheids are unicellular and with wide lumen
  2. Tracheids are multicellular and with narrow lumen
  3. Vessels are multicellular and with wide lumen
  4. Vessels are unicellular and with narrow lumen
AIPMT 2002
4

Axillary bud and terminal bud derived from the activity of : -

  1. Apical meristem
  2. Parenchyma
  3. Lateral meristem
  4. Intercalary meristem
AIPMT 2002
5

Four radial vascular bundles are found in : -

  1. Monocot stem
  2. Dicot stem
  3. Dicot root
  4. Monocot root
AIPMT 2002
6

Vessels are found in:

  1. Most of the angiosperms and a few gymnosperms
  2. All angiosperms and some gymnosperms
  3. All pteridophyta
  4. All angiosperms, all gymnosperms and some pteridophyta
AIPMT 2002
7

Main function of lenticel is

  1. transpiration
  2. guttation
  3. gaseous exchange
  4. bleeding.
Out of syllabusAIPMT 2002
8

In which of the following plants sunken stomata are found?

  1. Nerium
  2. Hydrilla
  3. Mango
  4. Guava
AIPMT 2001
9

What happens in plants during vascularisation?

  1. Formation of procambium, primary phloem and xylem simultaneously
  2. Differentiation of procambium followed by the formation of secondary xylem
  3. Differentiation of procambium, formation of primary phloem followed by formation of primary xylem
  4. Differentiation of procambium followed by the formation of primary phloem and xylem simultaneously
AIPMT 2000

All Anatomy of Flowering Plants PYQs →

PDFDownload Anatomy of Flowering 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)