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How different are pteridophytes from bryophytes regarding substance transport?
Pteridophytes are tracheophyte (vascular) plants, i.e., they have tissues specialized in conduction of water and nutrients. Bryophytes are nonvascular plants. In pteridophytes thus the substance transport is done by vessels and in bryophytes that transport happens by diffusion.
Why is pH regulation important for living beings? How do mineral salts participate in this regulation? The potential of hydrogen (pH) is a measure of the amount of hydrogen ion
Types of Osmotic Exchanges The osmotic exchanges that take place between an animal and its environment are of two different types: Obligatory exchanges and Regulated
Q. Arthropod identity card. How are arthropods characterized according to examples of representing beings, basic morphology, type of symmetry, germ layers and coelom, digestive sys
Q. What are the cells with a delimited nucleus called and what are the major elements of the nucleus? Cells with delimited nucleus are known eukaryotic cells. Organisms compose
Organogenesis - Plant Tissue and Organ Culture Organogenesis refers to the differentiation of organs such as roots, shoots or flowers. Shoot bud differentiation may occur dire
Loading and Unloading of Sieve Tubes In order to understand the loading of food from manufacturing leaf cells to sieve tubes we must examine the anatomy of a minor vein shown
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Define Principle of fehling test - reduction tests? Sugars that possess a free or potentially free (those that can be converted to free) aldehyde or ketonic group have a proper
MN blood group in humans is under the control of two co-dominant alleles M and N. Blood typing results of a population having of 1349 individuals showed that: - 363 persons h
Explain the Primary Root Growth? Primary Growth in Roots : Roots grow down and through the soil by adding new cells at the tip of the root (called the root tip). There is a
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