E ExamMaster

CBSE Class 10 · Science

Life Processes

Official NCERT chapter from Science (book code jesc1). ExamMaster notes are original teaching at CBSE Class 10 depth.

This lesson follows the official chapter “Life Processes” in Science. The words below are ExamMaster’s teaching, not a paste from the book. Use the NCERT chapter for the classroom sequence; use these notes to hold the idea without copying exercises or figures.

  • CBSE Class 10
  • Medium level
  • 8 concepts

1WHAT ARE LIFE PROCESSES?

Life processes are the jobs a living body must keep doing: take material and energy, exchange gases, move stuff inside, and dump leftovers, as taught. A process is a job-name, not a vibe of “being alive”. A toy that looks busy fails the job-list.

A screensaver “organism” is not these jobs.

Figure. A living body is the set of jobs that keep it going: take food, release energy, move materials, and dump waste. Miss one job and the others stall. The boxes are the school test for “alive”, not a drawing of an organ.

How it works

  1. List the taught jobsNutrition, respiration, transport, excretion — as named.
  2. Say a living body keeps them goingThe processes.
  3. Refuse a pretty-but-idle objectJobs, not a look.

2NUTRITION

Nutrition is taking in material that can become body and energy: a plant’s make-food story (as taught) or an animal’s take-and-break story. Nutrition is the intake-and-use job, not “eating” as a snack-photo. One leaf and one gut-map as school sketches are enough.

A calorie-ad is not the process.

Figure. Nutrition here is a path, not a pretty leaf. Carbon dioxide and water meet light in the leaf; glucose is the food that stays and oxygen is the leftover that leaves. A heterotroph skips the leaf box and starts at already-made food.

How it works

  1. Name make-food or take-and-break as the caseThe mode.
  2. Name where it happens as taught (leaf; a named tube)The place.
  3. Keep it a material-plus-energy jobNutrition.

3RESPIRATION

Respiration is the school release of energy from food using a gas-exchange story (oxygen in, carbon dioxide out, as taught). It is not “breathing” as chest-move only — breathing can be the air-in-air-out look that serves this job. A cell-level write if the lesson gave one stays school-size.

Holding your breath as a dare is not the process-definition.

Figure. Same glucose, two air conditions. With oxygen the school count is 38 ATP; without it the count is 2 ATP and a leftover (lactic acid or ethanol). The long bar is the oxygen path. Lengths follow those NCERT classroom numbers, not a contest yield.

How it works

  1. Name food-energy release plus the gas-exchangeThe job.
  2. Name breathing as the air-look if the lesson split themThe serve.
  3. Keep one honest sentenceRespiration.

4TRANSPORTATION

Transportation is moving material through the body: a plant’s up-and-down tubes, an animal’s blood-and-heart story, as taught. Transport is a carry-job, not the food itself. One named tube-pair is enough.

A highway photo is not xylem.

Figure. Double circulation is two visits to the heart, not one loop. Used blood goes to the right side, then the lungs; oxygenated blood returns to the left side and is pushed to the body. Boxes name the stations. No chamber outline is drawn.

How it works

  1. Name what is carried (water, food, blood as taught)The load.
  2. Name the pathThe tubes or the circuit.
  3. Call that transportationThe carry.

5EXCRETION

Excretion is dumping leftovers the jobs cannot use: a kidney-and-urine story, a leaf-waste story, as taught. Excretion is not “every exit” (a breath-out of CO2 may sit under respiration). Leftover after a job is the heading.

A dustbin cartoon is not the organ.

Figure. Excretion is a one-way drain: kidney filters, ureter carries, bladder stores, then the waste leaves. The nephron is the filter unit inside the kidney box — named, not drawn as a histology outline.

How it works

  1. Name the leftoverThe waste.
  2. Name the dump-path as taughtThe exit.
  3. Keep it leftover-after-a-jobExcretion.

6A definition is a test you can run

Life process is a test: a named job from the list. If you only say “alive”, you have a heading.

A cute-animal photo is not the test.

Figure. The school definition is a test you can run: does this thing take food, respire, transport, and excrete? A seedling passes. A toy that only moves fails a job and is not living on this test.

How it works

  1. Name the jobThe object.
  2. Say what is taken, carried, released, or dumpedThe test.
  3. Then the word has contentThe definition ran.

7Name the given before the unknown

The given is the organism or the organ named. The unknown is which process. Copy “leaf” before you say kidney.

A gym advert is not the given gas-exchange.

Figure. Name what you already have before you hunt the unknown process. Food points to nutrition, oxygen to respiration, waste to excretion. Swapping the given for the process is how a life-processes answer loses the mark.

How it works

  1. Copy the named part or organismThe given.
  2. Name the processThe unknown.
  3. Stay with the school listGiven first.

8One worked case is enough at this class

One job-map is enough. A page of the same leaf-clone does not add a new kidney.

Ten twins of “living things eat” are still one nutrition.

Figure. One leaf is enough at this class. Cover half, leave half in light, then test both with iodine. Starch appears only on the lit half, so light is the given that made the food. The cover is a control, not a decoration.

How it works

  1. Run one process-sentenceThe case.
  2. A second only as a checkOptional.
  3. StopThis class.
Respiration here is
  1. Energy-release plus a gas-exchange story — not chest-move only
  2. A snack photo
  3. Excretion of urine only

Breathing can serve it; the job is the release.

Notes

  • Mapped to the official NCERT chapter “Life Processes”. Original teaching only — no textbook sentences.
  • Science here is Physics, Chemistry and Biology ideas at this class, never a language or social-science chapter.

Recap

Hold these pegs from the official chapter “Life Processes”. The wording is ExamMaster’s teaching, not a textbook recap.

WHAT ARE LIFE PROCESSES?
Life processes are the jobs a living body must keep doing: take material and energy, exchange gases, move stuff inside, and dump leftovers, as taught.
NUTRITION
Nutrition is taking in material that can become body and energy: a plant’s make-food story (as taught) or an animal’s take-and-break story.
RESPIRATION
Respiration is the school release of energy from food using a gas-exchange story (oxygen in, carbon dioxide out, as taught).
TRANSPORTATION
Transportation is moving material through the body: a plant’s up-and-down tubes, an animal’s blood-and-heart story, as taught.
EXCRETION
Excretion is dumping leftovers the jobs cannot use: a kidney-and-urine story, a leaf-waste story, as taught.
A definition is a test you can run
Life process is a test: a named job from the list.

Practise Life Processes

Reading is free and needs no account. Practice, mocks and progress live in the app.

  • A 4-question practice set that ends the chapter
  • 1 quick check with worked explanations
  • Timed mocks scored with the real marking scheme
  • Readiness tracked per topic, kept on your device
Continue with Google — freeNo card, no trial. Works offline once installed.