Water vapours are absorbed by anhydrous calcium chloride while these are a adsorbed by silica gel.Point out the difference between absorption and adsorption.

Write any two differences between absorption and adsorption.

Water vapours are absorbed by anhydrous calcium chloride while these are a adsorbed by silica gel. Are all adsorptions exothermic In nature?

Point out the difference between gametogenesis and embryogenesis.

During sexual reproduction fertilization is an important process.But in most aquatic organisms like fishes,amphibians etc.external fertilization occur.In most terrestrial organisms internal fertilization is common. Point out the differences between external and internal fertilization.

Based on the nature of order present in the arrangement of the constituent particles, solid are classified into two crystalline and amorphous. List out any four points of difference between crystalline and amorphous solids.

Based on the nature of order, present in the arrangement of the constituent particles, solids are classified into two, crystalline and amorphous. List out any four points of difference between crystalline end amorphous solids. b) Alist of solids are given below : Quartz, glass, iodine, ice. From this, identify crystal (s) i) having sharp melting point. ii) which is/are isotropic

Read the following statements and find out the incorrect statement. a. Embryo development precedes endosperm development. b. Though the seeds differs greatly the early stages of embryo development (embrogeny) are similar in both monocotyledons and dicotyledons. c. A typical dicotyledonous embryo consists of an embryonal axis and two cotyledons. d. Endosperm may either be completely consumed by the developing embryo (e.g., castor and coconut) before seed maturation or it may persist in the mature seed (e.g., wheat, rice, maize, pea, groundnut and beans). e. The coconut water from tender coconut is cellular endosperm and the surrounding while kernel is the nuclear endosperm.