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NEET · Biology · Class 11

Plant Growth and Development — NEET Biology MCQs

30 questions written by hand against the NCERT chapter. Every wrong option is explained, not just the right one.

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Sample questions from this chapter

A tree continues adding new shoots and roots for decades, although individual leaves and flowers are short-lived. Which feature explains this?
  1. Persistent meristems make plant growth potentially indeterminate ✓
  2. Every mature plant cell keeps dividing
  3. Flowers return to an embryonic state after pollination
  4. Secondary growth replaces photosynthesis
Answer: A. Open meristems continually generate organs, giving plants indeterminate growth at selected sites. Indeterminate does not mean that each cell or organ grows indefinitely.
Why not B: Most mature cells differentiate and stop dividing; restricted meristematic populations sustain growth.
Why not C: Flowering organs follow determinate developmental programmes rather than restarting whole-plant embryogenesis.
Why not D: Cambial activity increases girth but does not replace carbon assimilation.
A seedling's dry mass rises from 2 g to 4 g, while another rises from 20 g to 24 g in the same period. Which has the greater relative growth rate?
  1. The second, because it gains 4 g
  2. They are equal because both are seedlings
  3. The first, because it doubles from its smaller initial mass ✓
  4. Relative rate cannot use mass
Answer: C. The first gains 100% while the second gains 20%; therefore relative growth is greater in the first despite a smaller absolute gain. This separates absolute from relative growth.
Why not A: Four grams is the greater absolute increment, but it is only one-fifth of the second seedling's initial mass.
Why not B: Relative rate depends on starting size, not organism label.
Why not D: Mass, length, area and cell number can all quantify growth when used consistently.
A stem segment gains fresh mass after water uptake but its dry mass and cell number do not change. Does this alone demonstrate growth?
  1. Yes, because fresh mass is the sole growth criterion
  2. Yes, because water becomes new protoplasm immediately
  3. No; hydration can increase mass reversibly without permanent dry-matter addition ✓
  4. No; plants can grow only by increasing cell number
Answer: C. Growth is a permanent, irreversible increase; transient hydration can mimic mass gain. Dry mass, dimensions and persistence help separate expansion from mere water uptake.
Why not A: Fresh mass is confounded by reversible water status.
Why not B: Absorbed water expands cells but is not automatically synthesised cellular material.
Why not D: Plant growth can also occur through irreversible cell enlargement.

These are 3 of the 30 questions in the test. Take the full chapter test →

Read the chapter first

Every NCERT question in this chapter is solved, free: NCERT solutions — Plant Growth and Development →

Other NEET Biology chapters

The Living WorldBiological ClassificationPlant KingdomAnimal KingdomMorphology of Flowering PlantsAnatomy of Flowering Plants

All 32 chapters →

Questions

How many NEET questions are there on Plant Growth and Development?

This chapter test has 30 questions — 10 easy, 14 medium and 6 hard — all written against the NCERT Class 11 chapter.

Is this NEET Biology chapter test free?

Yes. Every chapter test is free with no login. The only paid thing on the site is the full-length 90-question Biology mock and its all-India rank.

Do the questions explain the wrong options?

Yes — every distractor carries its own explanation naming the specific misconception that makes a student pick it. That is the part most question banks skip, and it is the part that changes your next attempt.