Internal Structure of a Flowering Plant: JAMB Biology Questions, Answers & Notes

What Internal Structure of a Flowering Plant covers in the JAMB Biology syllabus

A flowering plant has roots (absorb water/minerals and anchor), a stem (supports and conducts) and leaves (photosynthesis). Transport tissues are xylem (water and mineral salts upward) and phloem (manufactured food); the cambium between them gives secondary growth, and meristems produce new cells. Leaves have a protective epidermis with a waxy cuticle, stomata (controlled by guard cells) for gas exchange and transpiration, and palisade mesophyll rich in chlorophyll for photosynthesis. Root hairs increase the absorbing surface. A flower's stamen (anther + filament) makes pollen; the carpel has the stigma, style and ovary (with ovules that become seeds). Petals attract pollinators; pollination moves pollen to the stigma.

For Internal Structure of a Flowering Plant, JAMB expects you to be able to:

• Describe the structure and functions of root, stem and leaf
• Identify plant tissues (xylem, phloem, cambium, epidermis) and their roles
• Describe the parts of a flower and the leaf's role in photosynthesis

Key facts & revision notes: Internal Structure of a Flowering Plant

These are the recurring points our Internal Structure of a Flowering Plant questions test — revise them until each feels automatic, then practise the questions above to lock them in.

• Xylem transports water and dissolved mineral salts from the roots upwards.
• Phloem transports manufactured food (sugars) from the leaves to other parts.
• Roots absorb water and mineral salts and anchor the plant in the soil.
• Stomata are pores (mainly on the lower leaf surface) for gas exchange and transpiration.
• The cuticle is a waxy layer over the epidermis that reduces water loss.
• Guard cells surround each stoma and control its opening and closing.
• The palisade mesophyll, packed with chloroplasts, is the main site of photosynthesis.
• Root hairs greatly increase the surface area for absorbing water and mineral salts.
• Meristematic tissue actively divides, producing new cells for growth.
• The anther (part of the stamen) produces pollen grains.
• The stigma is the top of the carpel that receives pollen during pollination.
• The ovule develops into a seed after fertilisation.
• Petals are often brightly coloured and scented to attract pollinating insects.
• The leaf's main function is photosynthesis (food manufacture).
• The stem supports the leaves and flowers and conducts water and food between roots and leaves.
• The cambium is a meristematic layer between xylem and phloem responsible for secondary (girth) growth.
• Lenticels are pores in bark that allow gas exchange in woody stems.
• The epidermis is the outer protective layer of young plant organs.
• Chlorophyll, in the chloroplasts, gives leaves their green colour and traps light.
• Pollination is the transfer of pollen from the anther to the stigma.
• Root hairs absorb water and minerals from the soil.
• Xylem carries water up from roots to leaves.
• Phloem moves food in both directions to where it is needed.
• The chloroplast-rich mesophyll carries out most photosynthesis.

Worked examples

Three Internal Structure of a Flowering Plant questions with the answer and a short explanation, so you can see how the topic is set before you practise the full set.

How Internal Structure of a Flowering Plant is tested in JAMB Biology

Our Internal Structure of a Flowering Plant bank holds 40 questions (4 easy, 26 medium, 10 hard). JAMB Biology typically returns to Internal Structure of a Flowering Plant 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 Internal Structure of a Flowering Plant 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 Internal Structure of a Flowering Plant. 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 Biology 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 Internal Structure of a Flowering Plant is repeated timed practice, so use the button above until the recurring patterns feel automatic.

Common mistakes to avoid in Internal Structure of a Flowering Plant

The errors that cost marks on Internal Structure of a Flowering Plant 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 Internal Structure of a Flowering Plant actively by answering questions, not just by re-reading notes — recall under time is what the exam rewards.

Frequently asked questions

Is Internal Structure of a Flowering Plant part of the JAMB Biology syllabus?

Yes. Internal Structure of a Flowering Plant is a recognised topic in the JAMB Biology syllabus, covering describe the structure and functions of root, stem and leaf. You should be able to recall its key facts and apply them to multiple-choice questions.

How many Internal Structure of a Flowering Plant questions can I practise on Belmadeng?

There are 40 original, JAMB-standard Internal Structure of a Flowering Plant 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 Internal Structure of a Flowering Plant?

A flowering plant has roots (absorb water/minerals and anchor), a stem (supports and conducts) and leaves (photosynthesis). Transport tissues are xylem (water and mineral salts upward) and phloem (manufactured food); the cambium between them gives secondary growth, and meristems produce new cells. L…

How do I answer Internal Structure of a Flowering Plant questions quickly in JAMB?

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

Are these JAMB Biology Internal Structure of a Flowering Plant 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 Internal Structure of a Flowering Plant questions free without signing up?

Right here — tap “Start Internal Structure of a Flowering Plant 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 Biology 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.