Question:

Eustele is present in:

Updated On: Jun 7, 2022
  • algae
  • dicots
  • bryophytes
  • pteridophytes
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The Correct Option is B

Solution and Explanation

Eustele is a type of dissected siphonostele in which vascular cylinder appears in a ring of collateral or bicollateral vascular bundles separated by medullary rays e.g., Dicot stem.
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Concepts Used:

Seed

The matured and fertilized ovule, which comprises an active embryo reserve food and protective coating, is referred to as a seed. Seeds are ripened ovules that contain an embryonic plant with sufficient reserve food for embryo development. Ovules evolve into seeds after fertilization.

Types of Seed:

  1. Monocotyledonous seeds: Seeds having only one cotyledon, called monocotyledonous seeds.
  2. Dicotyledonous seeds: Seeds with two cotyledons, called dicotyledonous seeds.
  3. Albuminous seeds: Seeds having an endosperm. These seeds have thin membrane cotyledons and endosperm that hold on and feed the seedling during its early growth.
  4. Exalbuminous seeds: Food gathers in the endosperm tissue of exalbuminous seeds early in development, but it is utilized by the growing embryo and mature seeds without endosperm.