ICSE Class 10 Chemical Coordination in Plants — Mock Test (2027)

Free online mock test for Chemical Coordination in Plants (ICSE Class 10 Biology) — 20 competency-based questions based on the latest CISCE 2027 syllabus, with instant marking. Try the samples below, then take the full test free.

What to expect: This mock test covers key concepts from the Chemical Coordination in Plants chapter — including application-based and competency-focused questions aligned with how ICSE actually sets the paper.

Tip: Attempt without notes first to identify gaps, then review explanations for any wrong answers. Retake after a few days for best retention.

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Sample questions

1.Why can one rotten orange spoil an entire basket of oranges?
- A.The rotten orange releases ethylene gas, which diffuses and accelerates ripening in others.
- B.The rotten orange attracts insects that spread decay to nearby oranges.
- C.The rotten orange absorbs nutrients from surrounding oranges, causing them to spoil.
- D.The rotten orange releases a toxic liquid that contaminates the basket.
2.Which one of the following plant hormones is responsible for phototropism in plants?
- A.Cytokinin
- B.Auxin
- C.Ethylene
- D.Gibberellins
3.Growth of pollen tube towards the ovule is an example of _______.
- A.phototropism
- B.geotropism
- C.hydrotropism
- D.chemotropism
4.Sunil tried to match the tropic movements in plants with the stimulus they respond to. The tabulation is given below:
Tropism Stimulus
P Thigmotropism Touch
Q Geotropism Water
R Chemotropism Chemicals
S Phototropism Gravity
Identify the correct pair:
- a.P and R
- b.Q and S
- c.R and S
- d.P and S
5.Raj is matching hormones with their functions in plants and prepared the following pairs:
Hormone Effect on the plant
P Causes swelling of nodes and inhibits stem elongation
Q Breaks bud dormancy and promotes leaf expansion
Identify the correct pair of hormones.
- A.P – Gibberellins, Q – Cytokinins
- B.P – Ethylene, Q – Gibberellins
- C.P – Cytokinins, Q – Ethylene
- D.P – Abscisic Acid, Q – Gibberellins

	Tropism	Stimulus
P	Thigmotropism	Touch
Q	Geotropism	Water
R	Chemotropism	Chemicals
S	Phototropism	Gravity

Hormone	Effect on the plant
P	Causes swelling of nodes and inhibits stem elongation
Q	Breaks bud dormancy and promotes leaf expansion

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