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    Form 3 Chap 4 Flowering Plants Answers

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    chronoxzk
    This document provides information about plant reproduction, pollination, and seed germination in 3 or less sentences per question: (1) It describes the parts of a flower and their functions, methods of pollination, and what happens after pollination leading to fertilization. (2) Questions ask about different plant structures and their purposes, types of pollinators, and conditions required for seed germination. (3) The last few questions review self-pollination vs cross-pollination, characteristics of plants that encourage specific pollinators, and factors preventing seed germination.

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    Form 3 Chap 4 Flowering Plants Answers

    Uploaded by

    chronoxzk
    178 views4 pages
    This document provides information about plant reproduction, pollination, and seed germination in 3 or less sentences per question: (1) It describes the parts of a flower and their functions, methods of pollination, and what happens after pollination leading to fertilization. (2) Questions ask about different plant structures and their purposes, types of pollinators, and conditions required for seed germination. (3) The last few questions review self-pollination vs cross-pollination, characteristics of plants that encourage specific pollinators, and factors preventing seed germination.

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    This document provides information about plant reproduction, pollination, and seed germination in 3 or less sentences per question: (1) It describes the parts of a flower and their functions, methods of pollination, and what happens after pollination leading to fertilization. (2) Questions ask about different plant structures and their purposes, types of pollinators, and conditions required for seed germination. (3) The last few questions review self-pollination vs cross-pollination, characteristics of plants that encourage specific pollinators, and factors preventing seed germination.

    Copyright:

    Attribution Non-Commercial (BY-NC)
    Download as PDF, TXT or read online from Scribd
    Download as pdf or txt
    178 views4 pages

    Form 3 Chap 4 Flowering Plants Answers

    Uploaded by

    chronoxzk
    This document provides information about plant reproduction, pollination, and seed germination in 3 or less sentences per question: (1) It describes the parts of a flower and their functions, methods of pollination, and what happens after pollination leading to fertilization. (2) Questions ask about different plant structures and their purposes, types of pollinators, and conditions required for seed germination. (3) The last few questions review self-pollination vs cross-pollination, characteristics of plants that encourage specific pollinators, and factors preventing seed germination.

    Copyright:

    Attribution Non-Commercial (BY-NC)
    Download as PDF, TXT or read online from Scribd
    Download as pdf or txt
    of 4

    Marking scheme Marks

    11. (a) (i)


    1

    (ii) Anther : Produces a pollen grains 1


    Stigma : Traps the pollen grains on its sticky surface
    Style : Where the pollen tube grows down to the ovary

    (b) (i) insect / animal 1


    wind
    (c) (i) Becomes fruit 1
    (ii) Wither and drop off. 2

    12. (a) Cross pollination occurs when pollen grains are transferred from the anther to 2
    the stigma of a flower on a different plant but of the same species.
    (b)
    2

    3
    (c) When the pollen settle on the stigma.
    Pollen tube grows out from the pollen.
    Pollen tube grows down the style towards the ovary.
    The tube carrying the male gametes then enters the ovule.
    One of the gametes fuses with the ovum to form a zygote.

    (d) Fruit - Ovary 1


    Seed - ovule

    13. (a) 3

    (b) 2
    Traps the pollen grains on its sticky surface
    X

    Produces pollen grains.


    Y
    Attracts insects and animals.

    Z
    Place where fertilization take place

    14. (a) M : Rhizome 4


    N : Bulb
    O : Tuber
    P : Leaves

    .
    (b)
    4
    M, N, O and P 1 mark

    Vegetative parts Stem Leaves


    of the plants

    Example of the plants Ginger


    Shallot Bryophyllum
    Potato

    15. (a) Surrounds and protects the ovule inside. 1

    (b) 2

    (c) 1

    (d) (i) insect 1


    (ii) Big flower / short filament / short style / short stigma 2

    (e) 1. New varieties


    2. Healthier plants which can adapt better to changes in the environment. 2
    3. Healthier seeds.
    4. New plants that are more resistant to pests and diseases.
    1
    16. (a) (i) Self-pollination
    (ii) The pollen from the anther of a flower is transferred to the stigma of the 1
    same flower or to the stigma of another flower on the same plant. 2
    (iii) Cross-pollination

    (b) (i) Settles on a flower to obtain nectar. 1


    (ii) Transport the pollen grains to the stigma of another flower of the same 2
    plant.
    Transport the pollen grains to the stigma of another flower of the different
    plant of same species.
    (c) (i) Big 2
    Sweet
    Thick
    (ii) Oil palm / maize plant / durian / guava 1

    17. (a) J : Cotyledon 2


    K : Testa

    (b) Cotyledon – Stores and provides food for the dicotyledonous seed 2
    Testa - Protects the seed.

    18. (a) A seed will germinate only if there is water, air and warmth. 1

    (b) To prevent air from dissolving in the cooled boiled water. 1

    (c) P : Warmth is absent 4


    Q : Air is absent
    R : Water is absent
    S : Warmth, air and water are present.

    (d) Air, water, and warmth are needed for germination of seeds. 1

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