3. Fate of plant cell is determined by its position in the organism. Cells do not move, so its position is determined by the plane of division. Positional information comes from chemical signals via cell-cell …

25 The diagram shows an amoeba, a single-celled living organism. The movement of gases at X indicates the occurrence of which process or processes in the cell? 26 The diagram shows a liver cell.

• Describe the flow of energy through living organisms including light energy from the sun and chemical energy in organisms and its eventual transfer to the environment

Some organisms (e.g. insects) have more than one form in their life-cycle E.g larva and adult. Can you mention what different forms these organisms have in their life-cycles? Frogs have tadpoles …

At the lowest level of danger, there is no potential for predatory danger, and it is, therefore, the safest position the organism can be in (e.g., a lizard in its underground nest). The next level of threat is …

EXCRETION: removal from organism of toxic materials, the waste products of metabolism (chemical reactions in cells including respiration) and substances in excess of requirements.

Egestion: Egestion is the discharge or expulsion of undigested material (food) from a cell in case of unicellular organisms, and from the digestive tract via the anus in case of multicellular organisms