Show the chemical constituents of chromosomes with the help of a table.

Explain the following two significances of meiotic cell division — Maintains the constant number of chromosomes in a species Origin of variation in an organism

Tabulate which changes occur in a chromosome during the Anaphase of Karyokinesis.

Distinguish between the mitosis of plant cells and the mitosis of animal cells on the basis of — Formation of spindle fibres Process of cytokinesis

Distinguish between Mitosis and Meiosis on the basis of the following three aspects Site of occurrence Nature of division of chromosome Number of cells produced Explain the following phenomena related to meiotic cell division Separation of chromosome and chromatid Crossing over Or Distinguish between the cytokinesis of plant cells with the cytokinesis of animal cells on the basis of the following aspects : Process Time of initiation Role of Golgi bodies Establish the interrelationships among genes, DNA and chromosome.

Match the words in column-A with the most appropriate words in column B and re-write the correct pair mentioning the serial no. of both columns Column-A Column-B 1. Diabetes insipidus (a) Law of Independent Assortment 2. Schwann cell (b) Brittleness of bone 3. Meiosis (c) Exists between neurolemma and myelin sheath of axon 4. Senescence phase (d) Hyposecretion of ADH 5. Genetic disease (e) Spore mother cell and germ mother cell 6. The second law of Mendel (f) Colour blindness

The daughter cells are changed and modified in different ways during cell differentiation phase to form tissue, organ and system.

In ____ cell division spindle fibres are not formed.

How does the Cytokinesis of plant cell happen?

Prepare a list of sites of occurrence of meiotic cell division in plants as well as in animals.

Explain the process of segmentation with the help of a proper example of plants.

Mention any two phenomena during G1 phase of Interphase.