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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.
Determine what is dermal branchiae? External extensions of outer epidermis and peritoneum of the echinoderm body cavity. Both outer epidermis and inner peritoneum are lined wit
Isomer : Existence of different compounds having same molecular form but different structural forms.
EXCRETIO N IN ROUNDWORM - In ascaris 4 coelomoducts present, attached to each other by canaliculli in front of controling cell i.e. Rennete cell. Excretion materials are gi
Define Absorption, Storage and Elimination of Vitamin K? Dietary vitamin K, mainly phylloquinone, is absorbed chemically unchanged from the proximal intestine after solubilizat
Define Nutrition Support in Postoperative Nutritional Care? Aggressive nutritional support is important to avoid postoperative complications and mortality. Routine postoperativ
adaptation of kingdom animalia
1) The oxidative phase generates NADPH The oxidative branch of the pathway generates NADPH and pentose-5-phosphate, through the following reactions: a) Glucose-6-pho
What is the first polar body? How different is it from the oocyte II? In oogenesis the oogonium differentiates into oocyte I (2n) and this cell enters meiosis. After finishing
Active instruments -This category of instruments actively engage a restorative , enabling a specific dislodgment force to potentially lift off the prosthesis -These devices
What are the differences between vertebrates and the other chordates? Vertebrates are dissimilar because they have a spinal column (vertebral column). In these animals the noto
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