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MAJOR EVENTS DURING GASTRULATION -
1. There is rearrangement of cells due to morphogenetic movement of the cells of blastoderm.
2. The three primary germ layer get differentiated.
3. The cleavage rate is slowed down.
4. Growth if any, is insignificant.
5. Oxidation becomes, intensified so oxygen consumption increased and the nature of metabolism changes.
6. Nuclei become physiologically active and control activities of embryonic cells. The influence of paternal chromo- somes on the embryo becomes evident.
7. Synthesis of new kinds of proteins begins.
Why roots of many swamp plants have a special morphology? The Swamp and The marsh plants in general present supporting roots that ramify from portions of the stem above the gro
What are the hormones secreted by the neurohypophysis? What are their respective functions? The neurohypophysis secretes oxytocin and the antidiuretic hormone (ADH). Oxytoci
Tantalum and Niobium in alloplastic implant materials Tantalum has been used successfully in needle type, screw- type and double-bladed implants. However, both are difficult
how to explain an example from each class of vertebrate
RESPIR A TIO N IN FISHES - Respiratory organs are gills. In elasmobranchi 5-7 pairs of gills present, spiracles present. In Teleostomai 4 pairs gills present, covered
Q. What is the destination of the branchial clefts in humans? In humans the branchial clefts located in the anterior region of the pharynx also known as pharyngeal clefts are p
Explain Cancer and Inhibition of Tumorigenesis? Polyphenols appear to play a preventive role although the molecular mechanisms of action and applicability to human cancer preve
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Explain Indications for Surgery of Congenital Pulmonary Stenosis ? Interventional treatment is required for all neonates presenting with critical pulmonary valvar stenosis. Thi
Effect of pH or Nutrient Availability One of the greatest influence of pH on plant growth is through its effect on the nutrient availability. When base saturation is less than
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