Question

Word meaning
immature
Sir meaning of undifferentiated
Retain power of division
Unspecialized
Primitive
Polyhedral
Intracellular
Mesophyll
Lacunae
Maturity
Scailariform,
pitted thickness
Spiral thickness
Radial
Intermingling
Gradient
Perforation

Answer 1

• Immature : Not yet completely grown or developed. not arrived at perfection of full development.
• Undifferentiated : To change from relatively generalized to specialized kinds, during development.
• Retain power of division : division refers to a rank equivalent to phylum.
• Unspecialized : Having no special function.
• Primitive : of, relating to, or resembling an early stage in the evolutionary development of a particular group of organisms.
• Polyhedral : Having many sides or facets.
• Intracellular : the word intracellular means "inside the cell".
• Mesophyll : tissue found in the interior of leaves, made up of photosynthetic (parenchyma) cells, also called chlorenchyma cells. Consists of relatively large, highly vacuolated cells, with many chloroplasts.
• Lacunae : a cavity or depression, such as any of the spaces in the matrix of bone.
• Maturity : A state of full development or completed growth.
• Scalariform: Resembling the rungs of a ladder; ladderlike. Used of certain tissues and cells. The thickenings appear as parallel transverse bands like the rungs of a ladder. Ex. Protoxylem.
• pitted thickness : These are more or less circular areas, called pit, where secondary wall materials are not deposited. Ex. Metaxylem.
• Spiral thickness : These are spiral or helical thickening of secondary wall materials. There may be more than one helix. Ex. Protoxylem.
• Radial : a basic body plan in which the organism can be divided into similar halves by passing a plane at any angle along a central axis, characteristic of sessile and bottom-dwelling animals, as the sea anemone and starfish. Compare bilateral symmetry. Origin of radial symmetry.
• Intermingling : Things that intermingle get mixed up with each other.
• Gradient : a gradient results from an unequal distribution of ions across the cell membrane.
  Perforation