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Q. What is embryonic sac? Which are the cells that form the embryonic sac? What are their ploidies?
The embryonic sac is female gametophyte of angiosperms.
The embryonic sac is collected of three cells that remain next to the micropyle, two lateral synergids and the central oosphere (egg); one binucleated cell, the polar nuclei, is placed in the central region; three antipodal cells stay in the opposite side to the micropyle. Ever since all these cells come by mitosis from the functional megaspore they are haploid (n).
Use of biotechnology in characterization of animal biodiversity. Genetic uniqueness of populations is measured by the relative genetic distances of such populations from each o
Q. What are the protective structures of the central nervous system present in vertebrates? In vertebrates the brain and the spinal cord are protected by membranes, the meninge
Explain the primary function of blood? The primary function of the blood to transport oxygen from the lungs to body tissues for interior respiration. The blood helps in maintai
The organisms that live in hostile environments that cannot support other forms of life are members of what kingdom?
Butane and 2-methyl-propane are: Select one: a. Alcohols b. geometric isomers c. structural isomers d. Stereoisomers e. All of the above
What are proteins? How can the protein diversity of living beings be explained? Proteins are molecules made of sequences of amino acids bound by a peptide bond. The genetic
What do you mean by branchial basket? In ascidian adults the pharynx is enlarged to form branchial basket. Pharyngeal openings in wall of the basket allow water to pass through
Rigs Pattern: The nursing unit has been divided into small cubicles for 1,2,4 and 6 beds. The beds are arranged parallel to the longitudinal wall. The pattern was first bu
Q. Assets and capital stock accounts? At the present extend the liabilities, assets and capital stock accounts in the Adjusted Trial Balance columns to the Balance Sheet column
what is glycolysis?
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