Quantrex Quantrex AcademyJEE · NEET · NDA PYQs with solutions Open app
JIPMER 2019
Exam
JIPMER
Year
2019
Subject
Botany
Chapter
Sexual Reproduction in Flowering Plants

JIPMER 2019 · Botany · Sexual Reproduction in Flowering Plants

Hardest substance in plant kingdom is

Hardest substance in plant kingdom is

Options

  1. Asaple
  2. Bcorolla
  3. Csporopollenin
  4. Danther

Correct answer

C. sporopollenin

Step-by-step solution

Sporopollenin is the hardest substance in plant kingdom. It is the major constituent of outer layer (exine) of pollen grains. It is the most resistant organic material that can withstand high temperature as well as strong acids and alkali. No enzyme is known which can degrade it.
Practice Sexual Reproduction in Flowering Plants on Quantrex Academy →

More from Sexual Reproduction in Flowering Plants

How many theca are present in each lobe of a typical bilobed angiosperm anther ? NEET 2026Which of the following in female gametophyte of an angiosperm helps in guiding the pollen… NEET 2026Which of the following plant produces non-albuminous seeds ? NEET 2026Arrange the following in the correct development sequence related to microsporogenesis… NEET 2026Which one of the following types of pollination brings genetically different types of… NEET 2026If the diploid chromosome number of typical angiosperm is 36 , what would be the… NEET 2026Which one of the following is a triploid cell ? NEET 2026Given below are two statements: One is labelled as Assertion (A) and the other is… NEET 2025 Full Sexual Reproduction in Flowering Plants list All JIPMER PYQs