Coconut and groundnut are oil yielding crops. Point out the difference in the structure of seed.

Point out the difference between gametogenesis and embryogenesis.

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

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.

100 mL each of coconut oil and water are taken in two beakers and kept in the freezer. What difference can be observed in their volumes during freezing?

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.

When bromo benzene is monochlorinated, two Isomeric compounds A and B are obtained. Monobromination of A gives several isomeric products of molecular formula C_6 H_3 CI Br_2 , while monobromination of B yields only 2 isomers C and D . Compound C is identical with one of the compounds obtained from bromination of A , however D is totally different from any of the isomeric cómpounds obtained from the bromination of A , Give structures of A, B, C and D and also structures of four isomeric monobrominated products of A Support your answer with reasoning.

The activity of the enzyme is inhibited by certain chemicals having close resemblance to the substrate in its molecular structure. Point out a suitable example