Key term
Eduqas A-Level Biology A400QS
Biological Molecules
Cell Structure and Organisation
Cell Membranes and Transport
Enzymes
Nucleic Acids and Their Functions
Importance of ATP
Photosynthesis
Respiration
Microbiology
Population Size and Ecosystems
Topic overviewPopulation growth and its measurementThe population growth curve and carrying capacityDensity dependent and density independent factorsSampling abundance and distributionEcosystems, habitats and communitiesEnergy transfer and pyramids of biomassSuccessionDecomposition and the carbon cycleThe nitrogen cycle and human interventionEutrophication and the effects of drainage
Human Impact on the Environment
Classification and Biodiversity
Topic overviewThe need for classification and the taxonomic hierarchyThe three domain and five kingdom systemsCharacteristic features of the five kingdomsAssessing relatedness by physical features and biochemistryThe species concept and the binomial systemBiodiversity, adaptation and natural selectionMeasuring biodiversity in a habitatGenetic and molecular measures of biodiversity
Mitosis and Meiosis
Sexual Reproduction in Humans
Sexual Reproduction in Plants
Inheritance
Variation and Evolution
Application of Reproduction and Genetics
Topic overviewThe Human Genome Project, other sequenced genomes and genomics in healthcareScreening embryos, stem cells and the ethical issuesGenetic fingerprinting, PCR and electrophoresis in forensic workRecombinant DNA and the production of human insulinGenetically modified crops and gene therapy
Adaptations for Gas Exchange
Topic overviewSurface area to volume ratio and gas exchange in small organismsSpecialised respiratory surfaces and the need for ventilationGills and counter current flow in bony fishThe human breathing system and its histologyVentilation and gas exchange in humansThe insect tracheal systemThe angiosperm leaf, stomata and gas exchange
Adaptations for Transport
Topic overviewVascular systems compared across animal groupsThe mammalian heart and blood vesselsThe cardiac cycle and its controlBlood, haemoglobin and dissociation curvesThe Bohr effect, chloride shift and tissue fluidThe root and the uptake of waterThe endodermis and the entry to the xylemXylem, transpiration and cohesion-tensionThe potometer and xerophytes and hydrophytesPhloem and translocation
Adaptations for Nutrition
Homeostasis and the Kidney
The Nervous System
Immunology and Disease: Disease and Its TransmissionImmunology
Immunology and Disease: AntibioticsImmunology
Immunology and Disease: The Immune ResponseImmunology
Human Musculoskeletal Anatomy: Skeletal TissuesMusculoskeletal
Topic overviewCartilage and its three typesThe composition and functions of compact boneBone remodelling and the Haversian systemRickets, osteomalacia, osteoporosis and brittle bone diseaseThe structure of skeletal muscleThe sliding filament theoryFast and slow twitch fibres, and energy for contraction
Human Musculoskeletal Anatomy: Structure and Function of the SkeletonMusculoskeletal
Human Musculoskeletal Anatomy: JointsMusculoskeletal
Neurobiology and Behaviour: The BrainNeurobiology
Neurobiology and Behaviour: NeuroscienceNeurobiology
Sexual Reproduction in Plants
- 5 subtopics
- 15 things to know
- Component 2
What Sexual Reproduction in Plants covers
Sexual Reproduction in Plants is examined in Component 2, Continuity of Life. It covers flower structure and the contrast between wind and insect pollination, the development of pollen grains and ovules, pollination and double fertilisation, the formation and structure of seed and fruit and germination of Vicia faba and the action of gibberellin.
The 5 subtopics
Each one has its own page.
- Flower structure and the contrast between wind and insect pollinationFour whorls of a generalised flower from the outside inwards, two parts of a stamen and three parts of a carpel.Open →
- The development of pollen grains and ovulesProduced when a pollen mother cell divides by meiosis, division that gives a pollen grain its two nuclei and two layers of the wall of a pollen grain.Open →
- Pollination and double fertilisationTwo structural features that make self-pollination unlikely in a flower, how the pollen tube grows down through the style and two fusions that make up double fertilisation.Open →
- The formation and structure of seed and fruitFunction of the testa, hilum of a seed and two parts of the plant embryo found inside a seed.Open →
- Germination of Vicia faba and the action of gibberellinThree conditions required for germination, first visible events when a broad bean seed germinates and role of gibberellin in the germination of a cereal grain.Open →
What you need to know
Answer each one before you reveal it.
Your recallNot started
Key term
What prevents a plant from pollinating itself, and what happens in double fertilisation?
Numbers
A drawing of an anther was made at a magnification of ×40 and measures 96 mm across. Calculate the actual width of the anther.
Key term
From which part of the flower does a seed develop?
Key term
Define germination.
Key term
Name the four whorls of a generalised flower from the outside inwards.
Key term
Describe the arrangement of pollen sacs in a typical anther and name the layer that nourishes the developing pollen.
Key term
Define pollination.
Key term
From which part of the flower does the fruit develop?
Key term
State three conditions required for germination.
Key term
Name the two parts of a stamen.
Key term
Which cells inside a pollen sac divide by meiosis?
Evaluation
Give one advantage of self-pollination.
Key term
From what does the testa of a seed develop?
Key term
Why does a germinating seed need water?
Take Sexual Reproduction in Plants further
The same content, four other ways.
Questions from this topic
Each one with the model answer underneath.
- 1
Name the four whorls of a generalised flower from the outside inwards.
Model answer
The sepals, the petals, the stamens and the carpels.
- 2
Name the two parts of a stamen.
Model answer
The anther and the filament that supports it.
- 3
Name the three parts of a carpel.
Model answer
The stigma, the style and the ovary.
- 4
State the function of the sepals.
Model answer
They enclose and protect the rest of the flower while it is still in bud.
- 5
Describe the petals of a typical insect-pollinated flower.
Model answer
They are large, brightly coloured and often scented, and they may carry lines or patches that guide an insect towards the nectar.
- 6
Describe the petals of a typical wind-pollinated flower.
Model answer
They are small and green or absent altogether, and they have no scent.
What is inside Levo
Six ways to work the same material.
Sexual Reproduction in Plants revision questions
- What does Sexual Reproduction in Plants cover in Eduqas A-Level Biology?
- 5 subtopics: flower structure and the contrast between wind and insect pollination, the development of pollen grains and ovules, pollination and double fertilisation, the formation and structure of seed and fruit and germination of vicia faba and the action of gibberellin. Each one has its own page with questions and model answers.
- How is Sexual Reproduction in Plants organised?
- By the Eduqas A400QS specification, subtopic by subtopic, so it matches the order you are taught it in.
Every question in Sexual Reproduction in Plants, on a schedule.
Attempt a question from memory, write the correct version, then attempt it again. Levo records the jump between your first attempt and your last, and brings each question back on the day you are due to forget it.
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