Growth, Development and Germination: JAMB Agricultural Science Questions, Answers & Notes

What Growth, Development and Germination covers in the JAMB Agricultural Science syllabus

Growth is a permanent increase in a plant's size and dry mass through cell division (at meristems) and enlargement, while development is the accompanying changes in form and function (flowering, fruiting). A seed germinates into a seedling given water, oxygen and a suitable temperature; the radicle forms the root, the plumule the shoot, the cotyledon/endosperm stores food (broken down by enzymes into sugars) and the testa protects it. Germination is epigeal (cotyledons above ground, e.g. beans) or hypogeal (below, e.g. maize). Seed dormancy is a resting period when a viable seed won't germinate. Plants show tropisms — directional growth controlled by hormones (auxins): phototropism (toward light) and geotropism (roots down). Growth follows an S-shaped curve. Good germination and growth give healthy crops and yields.

For Growth, Development and Germination, JAMB expects you to be able to:

• Define growth, development and germination and its conditions
• Describe seed parts (radicle, plumule, cotyledon, testa) and epigeal/hypogeal germination
• Explain tropisms, plant hormones, dormancy and the growth curve

Key facts & revision notes: Growth, Development and Germination

These are the recurring points our Growth, Development and Germination questions test — revise them until each feels automatic, then practise the questions above to lock them in.

• Growth is a permanent (irreversible) increase in the size and dry mass of a plant.
• Germination is the growth of a seed into a seedling.
• Seeds need water, oxygen and a suitable temperature to germinate (light is not always required).
• The radicle grows downward and forms the root.
• The plumule develops into the shoot (stem and leaves).
• The cotyledon (or endosperm) stores food used by the embryo during germination.
• The testa is the protective seed coat.
• In epigeal germination the cotyledons are carried above ground (e.g.
• In hypogeal germination the cotyledons stay below the soil (e.g.
• A tropism is a directional growth response of a plant to a stimulus (e.g.
• Phototropism is growth toward light; shoots grow toward light (positive phototropism).
• Roots grow toward gravity (positive geotropism); shoots grow away from it.
• Plant hormones (such as auxins) control growth responses and cell elongation.
• Dormancy is a resting period when a viable seed will not germinate even in favourable conditions.
• Enzymes convert stored starch into sugars, providing energy for the growing embryo.
• Plant growth typically follows an S-shaped (sigmoid) curve: slow, rapid, then levelling off.
• Growth occurs through cell division (mitosis) followed by cell enlargement and differentiation.
• Meristematic tissue (at root and shoot tips) is where active cell division for growth occurs.
• Development is the progressive changes in form and function (e.g.
• flowering, fruiting) that accompany growth.
• Good germination and growth produce healthy crops and good yields.

Worked examples

Three Growth, Development and Germination questions with the answer and a short explanation, so you can see how the topic is set before you practise the full set.

How Growth, Development and Germination is tested in JAMB Agricultural Science

Our Growth, Development and Germination bank holds 20 questions (6 medium, 14 hard). JAMB Agricultural Science typically returns to Growth, Development and Germination year after year, so steady practice on this topic is high-value revision. Questions are multiple-choice with four options, and at UTME pace you get roughly 40 seconds each — which is why timed practice matters.

How to answer Growth, Development and Germination questions

Work the stem first and predict the answer before you look at the options; then eliminate the ones that contradict the key facts above. Watch for “which is not…”, “all of the above” and “except” style stems, which are where rushed candidates lose easy marks on Growth, Development and Germination. If a calculation or a precise definition is involved, work it from first principles rather than guessing from a half-remembered rule. When two options look right, re-read the stem for the qualifier that separates them — JAMB rarely repeats an option by accident. If you are still unsure, eliminate the two weakest choices to lift your odds, flag the question, and move on; never burn a full minute on one Agricultural Science item when the exam gives you about forty seconds each. Then come back to flagged questions with whatever time remains. The single most reliable way to get faster at Growth, Development and Germination is repeated timed practice, so use the button above until the recurring patterns feel automatic.

Common mistakes to avoid in Growth, Development and Germination

The errors that cost marks on Growth, Development and Germination are usually careless rather than conceptual: misreading a negative stem, confusing two similar terms, or rushing a definition you actually know. Candidates also over-rely on “expo” and last-minute cramming instead of understanding the topic — which fails the moment JAMB rephrases a familiar idea. Treat every option as a claim to be checked against the facts above, keep your working tidy for any calculation, and don’t change a considered answer on a hunch. Above all, revise Growth, Development and Germination actively by answering questions, not just by re-reading notes — recall under time is what the exam rewards.

Frequently asked questions

Is Growth, Development and Germination part of the JAMB Agricultural Science syllabus?

Yes. Growth, Development and Germination is a recognised topic in the JAMB Agricultural Science syllabus, covering define growth, development and germination and its conditions. You should be able to recall its key facts and apply them to multiple-choice questions.

How many Growth, Development and Germination questions can I practise on Belmadeng?

There are 20 original, JAMB-standard Growth, Development and Germination questions in our free bank, each with the correct answer and a worked explanation. You can practise them untimed or as a timed test.

What are the most important points to know about Growth, Development and Germination?

Growth is a permanent increase in a plant's size and dry mass through cell division (at meristems) and enlargement, while development is the accompanying changes in form and function (flowering, fruiting). A seed germinates into a seedling given water, oxygen and a suitable temperature; the radicle …

How do I answer Growth, Development and Germination questions quickly in JAMB?

Read the stem carefully, eliminate clearly wrong options, and match the remaining choices to the key facts for Growth, Development and Germination. Practising timed Growth, Development and Germination questions builds the speed you need for UTME's pace of about 40 seconds per question.

Are these JAMB Agricultural Science Growth, Development and Germination questions past questions or original?

They are original questions written to JAMB (UTME) standard and mapped to the official syllabus — not reproduced past papers. This keeps them legal to use freely while closely mirroring how the real exam tests the topic.

Where can I practise Growth, Development and Germination questions free without signing up?

Right here — tap “Start Growth, Development and Germination practice” on this page to begin instantly. Belmadeng's CBT practice is completely free and needs no sign-up, download or subscription.

About these questions: original, JAMB-standard items written from the official UTME Agricultural Science syllabus (last reviewed 2026-09-18). Belmadeng is an independent study platform and is not affiliated with JAMB. Spotted an error? Use the report link.