Question

please answer these questions



1. What are the conditions necessary for osmosis? Will the temperature have any effect on the process of osmosis?

2.Bacteria do not have chloroplast but some bacteria are photoautotrophic in nature and perform photosynthesis.
Which part of bacterial cell perform photosynthesis?

3.What are centrosomes? How do they help in cell division?

4.Why do dry apricots placed in salt solution do not swell while they do so when kept in water.

5. Differentiate between :
a. Diffusion and Osmosis
b. Chromosome, Chromatin and Chromatid
c. Lateral and Intercalary Meristem
d. Plant tissues and animal tissues
e. Plasma membrane and cell wall

6. Differentiate between the following tissues based on the point given in brackets:
a. apical meristem and lateral meristem (location)
b. parenchyma and collenchyma (cell wall)
c. collenchyma and sclerenchyma (shape of cell)
d. xylem and phloem (function)
e. intercalary meristem and apical meristem (function)

7.State one area of the plant where the following tissues are located:
a. Xylem
b. Sclereids
c. Cambium
d. Parenchyma
e. Collenchyma
f. Sclerenchyma fibres

8.What are simple tissues? Differentiate different types of simple tissue with the help of diagrams.

9.Draw a plant cell and label the parts which
a. Determine the development and function of the cell.
b. Packages materials coming from endoplasmic reticulum.
c. Provides resistance to microbes to withstand hypotonic external medium without bursting.
d. Is site for many biochemical reactions necessary to sustain life.
e. Is a fluid contained inside the nucleus.
f. Store many substances necessary for cell.

Answer 1

1.osmosis is the movement of water from an area of high water potential to an area of low water potential across a semi-permiable membrane.
condition
clouds should form through conversation of air and condensation of water vapor in the air.
required water
osmosis does not require a cell to expend it's own energy osmosis is a type of diffusion process for water.



3. an organelles near the necleus of a cell which contains the centroiles (in animals cell's) and from which the spindle fibers develop division.