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How plants solve the problem of transporting substances throughout their tissues?
In the bryophytes the substance transport is done by the diffusion. In the tracheophytes (pteridophytes, angiosperms and gymnosperms) there are specialized conductive vessels, the xylem that carries water and mineral salts and the phloem that conducts organic material (sugar).
What are seed gums? What are its characteristic properties? Seed gums are a group of polysaccharides with the following properties: light to dark cream colored amorphou
EXAMPLES OF NATURAL SELECTION - 1 . INDUSTRIAL MELANISM - First studied by Fischer & Ford (1845) on pepperd moth (Biston betularia) of two types : grey moth (B.
Draw a diagram of transverse section of mammalian bone and label the following parts in it: (i) Haversian canal (ii) Lacuna containing osteocytes (iii) Canaliculi
Larval forms - Porifera In the majority of sponges the larval stage develops in the body of the parent. The larva is generally at the blastula stage of development. Figure dis
What is the significance of the -R group (variable radical) in an amino acid molecule? The -R group, also known as a lateral chain, is the variable part of the amino acid molec
The next step in the nitrogen cycle is the assimilation of inorganic nitrogen in the type of ammonia into organic nitrogen-having compounds. Total organisms assimilate ammonia by
In tomatoes, two alleles of one locus determine the character difference of purple versus green stems (alleles are P and p with P being completely dominatn and coding for purple st
Explain the Food Applications of Gum Arabic A major use for gum Arabic is in the confectionery industry where it has two important functions; to retard or to prevent crysta
Q Do beings of the class Reptilia have indirect or direct development? In beings of the class Reptilia the embryonic development is direct. So there is no larval stage. Q.
what is the protozoa?
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