Life Processes in Living Organisms — Class 9 Maharashtra SSC Science revision notes
A 3-page visual revision sheet for Life Processes in Living Organisms, written for Class 9 Maharashtra SSC Science. Formulas, diagrams and the traps that cost marks, laid out to be read the night before rather than the term before. Free, and it opens inside CapCompass.
Page 1 as PDF
Life Processes in Living Organisms in one look
the cell as the unit of life, and the processes every living thing must carry out
What every living thing must do
- nutrition: obtaining food, either by making it or by taking it in
- respiration: releasing the energy stored in that food, in every cell, all the time
- transport: moving materials to where they are needed and waste away from it
- excretion: removing the waste products of the body's own chemistry
- growth, movement, response to stimuli and reproduction complete the list
- all of them happen at cell level, which is why the cell is called the basic unit of life
Nutrition, and the two ways of getting food
- autotrophs make their own food, using light in photosynthesis. Green plants and algae
- photosynthesis needs carbon dioxide, water, chlorophyll and sunlight, and it produces glucose and oxygen
- it happens in the chloroplasts, and the leaf is arranged to bring the four requirements together
- stomata are the pores that let gases in and out, and they are opened and closed by guard cells
- heterotrophs depend on others: herbivores, carnivores, omnivores, and parasites and saprophytes
- saprophytes feed on dead matter and parasites on a living host, which is the distinction most often asked
The two equations at the centre
- photosynthesis, storing energy
6CO_2 + 6H_2O → C_6H_12O_6 + 6O_2 - aerobic respiration, releasing it
C_6H_12O_6 + 6O_2 → 6CO_2 + 6H_2O + energy - anaerobic respiration in muscle
C_6H_12O_6 → 2C_3H_6O_3 + energy - and in yeast
C_6H_12O_6 → 2C_2H_5OH + 2CO_2 + energy
Page 1 of 3. The full sheet, all 3 pages, opens free in the app.
What this Life Processes in Living Organisms sheet covers
- Life processes
- Nutrition
- Respiration
- What every living thing must do
- Stomata, the leaf's gas pores
- Autotrophic nutrition
- Heterotrophic nutrition
- Photosynthesis
- Nutrition, and the two ways of getting food
- The two equations at the centre
- photosynthesis, storing energy
- aerobic respiration, releasing it
- anaerobic respiration in muscle
- and in yeast
- Photosynthesis against respiration
- Transport and excretion
- The cell, and its main parts
- Terms in this chapter
- Traps that cost marks
- Tricks that save time
How CapCompass uses this sheet
These notes are not a standalone PDF. CapCompass plans Science chapter by chapter against your real exam dates and free hours, and when the plan reaches Life Processes in Living Organisms the sheet opens inside the study block itself — at the page covering the sub-topic that block is on, with the timer still running. Revision arrives at the moment the plan says revise, instead of having to be gone looking for.
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