- Name the phase in which the:
a) centromeres of chromosomes are lined up at an imaginary plane across the middle of the cell- Metaphase
b) nucleolus re-forms and the spindle fibres disappear- Telophase
c) chromosomes are visible as duplicated, thick and short thread-like structures- Prophase
d) cell is about ready to divide by cytokinesis- Telophase
e) cell is gathering its energy to begin active mitosis- Interphase
f) two sister chromatids of each chromosome separate at the centromere- Anaphase
Based on the diagram, answer the following questions:
a) Name the tissue found at the tip of a plant root.
a) Name the tissue found at the tip of a plant root.
- Apical meristem
b) Where else in a plant is this tissue usually found?
- Shoot tip
c) State the characteristics of the cells found in the tissue named in (a).
- Very small in size / isodiametric in shape /contain a dense cytoplasm / have a large nucleus
d) When mitosis occurs in these cells, primary growth, which records an increase in length and height, results in the root and shoot.
e) For secondary growth in a plant, mitosis occurs in the vascular cambium, a tissue found between the xylem and phloem tissue in dicotyledons.
f) Mitosis is important for growth because it increases the number of cells in the organism.
