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🇮🇳 ICSE Class 9 · flashcards
ICSE Class 9 Biology Flashcards
50 question-and-answer cards covering Biology as it is examined in ICSE Class 9. 24 of them are printed below, taken from across the deck — no signup, no paywall on the preview.
24 sample cards from the Biology deck
Sampled from the end of the deck, so these are different cards from the ones shown on the syllabus page.
Name the four components of phloem.
Sieve tubes, companion cells, phloem parenchyma, and phloem fibres.
Which is the only living component of xylem, and which is the only dead component of phloem?
Living component of xylem: xylem parenchyma. Dead component of phloem: phloem fibres.
What is a flower?
The reproductive part of a flowering plant (angiosperm), specially modified to carry out sexual reproduction and produce seeds and fruits.
Name the four whorls of a typical flower from outside to inside.
Calyx (sepals), corolla (petals), androecium (stamens), and gynoecium/pistil (carpels).
What is the calyx, and what is its function?
The outermost whorl made of sepals (usually green); it protects the flower in the bud stage.
What is the corolla, and what is its function?
The whorl of petals, often brightly coloured; it attracts insects/pollinators and protects the inner whorls.
What are the parts of a stamen (the male reproductive unit)?
A stamen consists of a filament (stalk) and an anther, which produces pollen grains containing male gametes.
What are the three parts of the pistil (carpel), the female reproductive unit?
Stigma (receives pollen), style (stalk connecting stigma to ovary), and ovary (contains ovules).
What develops into the seed and what develops into the fruit after fertilization?
The ovule develops into the seed, and the ovary develops into the fruit.
Distinguish between a bisexual and a unisexual flower.
A bisexual flower has both androecium and gynoecium (e.g., hibiscus); a unisexual flower has only one of them - either stamens (male) or carpels (female).
What is pollination?
The transfer of pollen grains from the anther of a stamen to the stigma of a carpel.
Differentiate between self-pollination and cross-pollination.
Self-pollination: pollen transferred to the stigma of the same flower or another flower on the same plant. Cross-pollination: pollen transferred to the stigma of a flower on a different plant of the same species.
Name four agents of pollination.
Wind (anemophily), water (hydrophily), insects (entomophily), and birds (ornithophily).
List two characteristics of insect-pollinated (entomophilous) flowers.
They have large, brightly coloured, scented petals with nectar, and sticky/spiny pollen grains with sticky stigmas. (Any two)
List two characteristics of wind-pollinated (anemophilous) flowers.
They are small, dull, often unscented with no nectar; produce large amounts of light, dry pollen; and have feathery stigmas and versatile anthers. (Any two)
Give two advantages of cross-pollination.
It introduces variation and produces healthier, more vigorous offspring with greater adaptability; new and improved varieties can be created. (Any two)
What is fertilization in flowering plants?
The fusion of the male gamete (from the pollen grain) with the female gamete (egg) in the ovule to form a zygote.
What happens after a pollen grain lands on a compatible stigma (pollen tube formation)?
The pollen grain germinates and grows a pollen tube down through the style into the ovary, carrying the male gametes to the ovule (micropyle).
What are the main parts of a seed?
The seed coat (testa and tegmen), the embryo (radicle, plumule, and one or two cotyledons), and stored food (in cotyledons or endosperm).
Differentiate between a dicotyledonous and a monocotyledonous seed.
A dicot seed has two cotyledons (e.g., gram, bean) and food usually stored in cotyledons; a monocot seed has one cotyledon (e.g., maize) with food stored in the endosperm.
In a seed, what do the radicle and plumule develop into?
The radicle develops into the root, and the plumule develops into the shoot.
What is the function of the micropyle in a seed?
It is a small pore through which water enters the seed during germination and through which the radicle emerges first.
What is germination, and what are the three essential external conditions for it?
Germination is the sprouting of a seed into a young seedling. The three conditions are water (moisture), suitable temperature (warmth), and oxygen (air).
Differentiate between epigeal and hypogeal germination.
In epigeal germination the cotyledons are pushed above the soil due to elongation of the hypocotyl (e.g., bean, castor); in hypogeal germination the cotyledons remain below the soil as the epicotyl elongates (e.g., maize, pea, gram).
What this deck covers
The Biology deck follows the ICSE Class 9 Biology syllabus — 1 chapters and 5 topics — so questions land on material that is genuinely examinable rather than trivia around it. That works out to roughly 50.0 cards per chapter.
Answers are written to be recallable, not just readable — averaging about 124 characters, which is long enough to carry the reasoning and short enough to say out loud.
A deck like this earns its keep on the second and third pass. Read the syllabus first so you know the shape of the subject, then use the cards to find the specific facts that have not stuck.
Biology flashcards FAQ
How many Biology flashcards are in this ICSE Class 9 deck?
50 cards. This page previews 24 of them, sampled evenly across the deck so you can judge the difficulty before installing anything.
Are these ICSE Class 9 flashcards free?
Yes. The preview here is free to read with no signup, and the full 50-card deck is free inside the Examius app.
What do the Biology cards cover?
They follow the ICSE Class 9 Biology syllabus — 1 chapters and 5 topics — so the questions track what is actually examinable.
How should I use these flashcards?
Read the syllabus first so you know the shape of the subject, then drill the deck. Examius schedules each card with spaced repetition, so cards you keep missing come back sooner and ones you know drift further apart.