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CBSE Class 10 · Science

Control and Coordination

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

This lesson follows the official chapter “Control and Coordination” 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

1COORDINATION IN PLANTS

Coordination in plants is a slow directed job: a bend toward light, a hormone-story as taught (a named plant hormone if the lesson used one). Plant control is that directed growth or move, not a brain-poster. One phototropism-or-equivalent case is enough.

A wilt from no water is a fail of a life process, not this heading unless the lesson tied it.

Figure. A shoot bends toward light. The root keeps growing down into the soil. The same seedling, two jobs, two directions.

How it works

  1. Name the cue (light, gravity — as taught)The signal.
  2. Name the directed job (bend, grow)The coordinate.
  3. Name a hormone only if the lesson didSchool list.

2HORMONES IN ANIMALS

Hormones in animals are chemical messages: a named gland, a named hormone, a named job (as the lesson listed — sugar-control, emergency-ready, growth, as taught). Hormone is a message-plus-job, not a mood-word. Keep only the pairs the book named; no extra medical how-to.

A rumour about a classmate’s body is not a classroom measurement.

Figure. Animal hormones leave a gland and travel in blood. The message is the chemical in the stream, not a wire.

How it works

  1. Name gland → hormone → job as taughtThe triple.
  2. Keep one pair as one caseEnough.
  3. Stop — no extra private how-toSchool size.

3A definition is a test you can run

Control / hormone is a test: a cue plus a directed job, or a gland-hormone-job triple. If you only say “control”, you have a heading.

A remote-control toy is not this hormone.

Figure. A reflex is a path you can trace: receptor, spine, muscle. If you cannot name the ends, you do not yet have the definition.

How it works

  1. Name the cue or the tripleThe object.
  2. Give the school sentenceThe test.
  3. Then the word has contentThe definition ran.

4Name the given before the unknown

The given is the cue or the named hormone. The unknown is the job. Copy the lesson’s pair before you invent a gland.

A sports-ad “adrenaline rush” is not the given triple unless the lesson used that name.

Figure. Name the receptor and the effector before you name the nerve. The given ends fix the path; the unknown is the link.

How it works

  1. Copy the named cue or hormoneThe given.
  2. Name the jobThe unknown.
  3. Stay inside the listGiven first.

5One worked case is enough at this class

One plant-bend or one hormone-job is enough. A page of the same light-clone does not add a new gland.

Ten twins of “plants bend” are still one idea.

Figure. One school case is enough: a hot pin on skin, the spine, the biceps, the hand moves away. Trace that path; do not invent extra organs.

How it works

  1. Run one directed job or one tripleThe case.
  2. A second only as a checkOptional.
  3. StopThis class.

6A miss: swapping the school name for the picture

A sunflower photo is a setting. The science is a cue and a directed bend. Yellow is not phototropism.

A smiling sun-sticker is not the hormone.

Figure. A box that only says neuron is the school name, not the picture. The picture names dendrite, body and axon in order.

How it works

  1. Keep the flower as a storyA setting.
  2. Name cue and bend, or the tripleThe science.
  3. Then the jobDo not swap.

7Check by the opposite action or the opposite test

Check a plant-job by naming the opposite cue (away from light if that was taught), or check a hormone by the opposite job-fail the lesson named (too little of that message). A slogan “hormones do everything” fails the pair-test.

A film mood-swing is not the opposite test.

Figure. The same hormone, opposite jobs. In the shoot, auxin on the shade side lengthens cells toward the light. In the root, it slows the shade side so the tip turns away.

How it works

  1. State the bend or the jobThe claim.
  2. Name the cue or the fail-without-the-messageThe check.
  3. Mend if they disagreeHonest.

8Keep the claim at this chapter, not the next

This chapter’s claim stops at plant cues and named animal hormone-jobs. It does not steal reproduction’s restart-map, and it does not start a medical lecture.

A page that already “explains puberty how-to” here misses the next official chapter’s size.

Figure. This chapter’s neuron is three parts you can point to. Synapse chemistry and brain maps wait for a later official chapter.

How it works

  1. Keep cue-and-bend and the triplesThis chapter.
  2. Leave restart-maps for reproductionThe next map.
  3. Do not add rumourClaim-size.
A plant hormone here is
  1. A named message for a directed job — only if the lesson named it
  2. A brain
  3. A rumour

School list; no extra how-to.

Notes

  • Mapped to the official NCERT chapter “Control and Coordination”. 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 “Control and Coordination”. The wording is ExamMaster’s teaching, not a textbook recap.

COORDINATION IN PLANTS
Coordination in plants is a slow directed job: a bend toward light, a hormone-story as taught (a named plant hormone if the lesson used one).
HORMONES IN ANIMALS
Hormones in animals are chemical messages: a named gland, a named hormone, a named job (as the lesson listed — sugar-control, emergency-ready, growth, as taught).
A definition is a test you can run
Control / hormone is a test: a cue plus a directed job, or a gland-hormone-job triple.
Name the given before the unknown
The given is the cue or the named hormone.
One worked case is enough at this class
One plant-bend or one hormone-job is enough.
A miss: swapping the school name for the picture
A sunflower photo is a setting. The science is a cue and a directed bend. Yellow is not phototropism.

Practise Control and Coordination

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