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Functions of Synergids
Ultra structurally the structure and concentration of cell organelles reveals that synergids are metabolically active. The following Wee functions are attributed to synergids.
1. Directing of pollen tube growth by secreting some chemotropically active substances.
2. The degenerating synergids form the site for pollen tube discharge in the embryo sac.
3. The filiform apparatus may aid in the absorption and transportation of materials into the embryo sac from the nucellus.
List a few shortcomings of native starches which make it unacceptable in certain food applications. Lack of free-flowing properties of water repellence of the starch granules,
Q. How Time affecting taste quality? Time- Time is another factor which affects sensation. Salt on tongue is sensed in a fraction of a second; whereas, bitter things may requir
What is Kingdom Monera? The eubacteria, archaebacteria, and blue-green bacteria (or cyanobacteria) which form Kingdom Monera lack the cellular organization that all other livin
The method of recombination or crossing-over Which of the following is a false statement regarding the method of recombination or crossing-over? A. Crossing-over takes place
Concept of Production - Ecosystems The ecosystems are unable to function, unless there is a constant input of energy from an external source that is sun. Solar energy enters t
What are pentoses? To what organic group do pentoses belong? Are nucleotides formed of only one type of pentose? Pentoses are carbohydrates made of five carbons. Deoxyribose is
The type of gene interaction in which effects of one gene override or mask the effects of other entirely different genes is known as: a) Mutation b) Linkage c) Pleitropy
In the above sections we discussed in detail the fossil record of primates in general and more particularly those of apes and the humans. Despite the fact that in recent years a nu
You wish to use PCR to sequence a particular gene that you have isolated. The sequencing protocol suggests that you use 3.2pmole (pico moles) of your primer in a 2 micro liter volu
Class of Mollusca - Aplacophora Worm-like, no shell, head or excretory organs mantle with chitinous cuticle or scales or spicules mantle cavity posterior. Aplacophorans are a
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