Which of the following statements are wrong? (i) Mitosis involves two sequential divisions, mitosis I and mitosis II. (ii) Meiosis results in the formation of four daughter cells with half the number of chromosomes. (iii) Simple permanent tissues are made up of only one type of cell. (iv) Collenchyma provides stiffness to the plant body. (a) \(\mathrm{B}\) and \(\mathrm{C}\) (b) \(A\) and \(D\) (c) \(C\) and \(\mathrm{D}\) (d) \(\mathrm{B}\) and \(\mathrm{D}\)

Understanding the difference between mitosis and meiosis is fundamental in biology. Mitosis is a process of cell division that results in two genetically identical daughter cells, each with the same number of chromosomes as the parent cell. It's a single division consisting of prophase, metaphase, anaphase, and telophase. Mitosis is vital for growth, repair, and asexual reproduction in organisms.

On the other hand, meiosis is a two-stepped division process that produces four non-identical daughter cells, each with half the number of chromosomes of the parent cell. This is crucial in sexual reproduction, leading to genetic diversity. The stages meiosis I and meiosis II each include a full set of phases, similar to mitosis, but the outcomes are very different due to crossing over and independent assortment during meiosis I.

Simple permanent tissues in plants are characterized by a group of cells that are similar in structure and function. They are 'simple' because they are composed of a single cell type. These tissues play diverse roles in plant biology, varying from providing structural support to participating in storage and photosynthesis.

Types of simple permanent tissues include parenchyma, collenchyma, and sclerenchyma. Each type has distinct functions: parenchyma primarily involves in storage and repair; collenchyma gives flexible support, particularly in areas of growth; and sclerenchyma is highly lignified to provide rigidity and strength.

The function of collenchyma tissue is crucial in the context of plant structure and growth. Collenchyma cells are characterized by their unevenly thickened cell walls, which provide tensile strength and flexibility to growing parts of plants, such as stems and leaves. Unlike sclerenchyma, collenchyma cells remain alive at maturity and thus can stretch and elongate with the plant organs.

These cells allow plants to withstand the mechanical stress of wind and movement while providing support without restraining growth. This is especially important in the young parts of the plant where growth is still occurring. In summary, the primary function of collenchyma tissues is to support the plant body in areas that are actively growing.