Which of the following tissues has dead cells?
(a) Parenchyma
(b) Sclerenchyma
(c) Collenchyma
(d) Epithelial tissue
Give two examples each of situations in which you push or pull to change
the state of motion of objects.
In brief state what happens when
(a) dry apricots are left for sometime in pure water and later transferred to
sugar solution?
(b) a Red Blood Cell is kept in concentrated saline solution?
(c) the Plasma-membrane of a cell breaks down?
(d) rheo leaves are boiled in water first and then a drop of sugar syrup is
put on it?
(e) golgi apparatus is removed from the cell?
Differentiate between rough and smooth endoplasmic reticulum. How is endoplasmic reticulum important for membrane biogenesis?
Draw a well labelled diagram of an eukaryotic nucleus. How is it different from nucleoid?
Illustrate only a plant cell as seen under electron microscope. How is it different from animal cell?
Draw a plant cell and label the parts which
(a) determines the function and development of the cell
(b) packages materials coming from the endoplasmic reticulum
(c) provides resistance to microbes to withstand hypotonic external media
without bursting
(d) is site for many biochemical reactions necessary to sustain life.
(e) is a fluid contained inside the nucleus
What are the consequences of the following conditions?
(a) A cell containing higher water concentration than the surrounding
medium
(b) A cell having low water concentration than the surrounding medium.
(c) A cell having equal water concentration to its surrounding medium.
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