10 public questions tagged with this topic.
Tracheids are elongated, lignified cells in xylem that provide structural support and facilitate water conduction.
Ref: NCERT Class 11 Biology Chapter 6: Anatomy of Flowering Plants Secondary Growth - Dicot Stem Root and Wood
Endodermal cells contain Casparian strips, which regulate the selective movement of water and minerals into the vascular tissue.
Ref: NCERT Class 11 Biology Chapter 6: Anatomy of Flowering Plants Anatomy of Dicot and Monocot Root
Phloem transports organic nutrients such as sucrose. Sieve tube elements lack nuclei and function with the help of companion cells.
Ref: NCERT Class 11 Biology Chapter 6: Anatomy of Flowering Plants Meristematic and Permanent Tissues - Simple and Complex
Sieve tube elements in phloem lack nuclei and rely on companion cells for their functions.
Ref: NCERT Class 11 Biology Chapter 6: Anatomy of Flowering Plants Meristematic and Permanent Tissues - Simple and Complex
Phloem is responsible for the transport of organic nutrients, particularly sucrose, from the leaves to different parts of the plant.
Ref: NCERT Class 11 Biology Chapter 6: Anatomy of Flowering Plants Meristematic and Permanent Tissues - Simple and Complex
Gymnosperms primarily use tracheids for water conduction, whereas angiosperms mainly use vessels.
Ref: NCERT Class 11 Biology Chapter 3: Plant Kingdom Angiosperms and Plant Life Cycles - Alternation of Generations
Gymnosperms have vascular bundles with cambium, enabling secondary growth.
Ref: NCERT Class 11 Biology Chapter 3: Plant Kingdom Gymnosperms - Characteristics and Life Cycle
Psilotum, known as a "living fossil," has a primitive vascular system and is one of the simplest vascular plants.
Ref: NCERT Class 11 Biology Chapter 3: Plant Kingdom Pteridophytes - Structure and Life Cycle
Veins in a leaf provide mechanical support and act as channels for the transport of water, minerals, and food.
Ref: NCERT Class 11 Biology chapter - Morphology of flowering plants
The right choice is C: Xylem and phloem. In BASICS of PLANT, that matches how the process or concept actually works — the other choices mix up related ideas or use the wrong mechanism. Skip these: A) Roots; B) Leaves; D) Chlorophyll. A quick check: if an option needs energy, pumps, or the opposite direction of movement, ask whether that really applies.
Ref: Best CSIR NET Plant Physiology books: Master Unit 6 with Taiz & Zeiger and Salisbury & Ross. Crack Part C experimental questions with top textbooks.
