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    BIOhfjdjdk

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    Vibu0b Hahshshshshhgfd ghatanaakram

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    BIOhfjdjdk

    Uploaded by

    suhagshanit
    5 views4 pages
    Vibu0b Hahshshshshhgfd ghatanaakram

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    Vibu0b Hahshshshshhgfd ghatanaakram

    Copyright:

    © All Rights Reserved
    Download as DOCX, PDF, TXT or read online from Scribd
    Download as docx, pdf, or txt
    5 views4 pages

    BIOhfjdjdk

    Uploaded by

    suhagshanit
    Vibu0b Hahshshshshhgfd ghatanaakram

    Copyright:

    © All Rights Reserved
    Download as DOCX, PDF, TXT or read online from Scribd
    Download as docx, pdf, or txt
    of 4

    MANN INTERNATIONAL SCHOOL

    SA - 1 (2023-24)
    11th class- Biology
    Time 3 hours M M : 70

    Part- A
    One marks each. 1x16=16
    1. First vascular plant is
    a) Thallophyta. B) pteridophyta
    b) Bryophyta. C) spermatophyta
    2. Phytoplankton are
    a) Heterotrophs. C) saprotrophs
    b) Autotrophs. D All of these
    3. Yellow green pigment is found in
    a. Xanthophyta. C. Phaeophyta
    b. Chlorophyta. D. Rhodophyta
    4. An open circulatory system occur in
    a. Reptiles. C. Aves
    b. Humans. D insects
    5. Which of the following is a true fish
    A. Jelly. B. Flying
    B. Cuttle. Silver fish.
    6. Egg laying mammal is
    A. Armedillo. C. Duck billed platypus
    B. Pangolin. D. All
    7. Fibrous root system is mostly found in.
    A. Dicot. B. Monocot. C. Pteridophytes. D. Bryophyta.
    8. What type of placentation seen in sweet pea ?
    A. Marginal b. Basal C. Axile D. Free Central
    9. Pattern of arrangement of leaves on stem is known as.
    A. Phyllode. B. Phyllotaxy. C. Phylloclade. D. Heterophylly
    10. Plumule is covered by protective sheath called
    A. Coleorrhiza. B. Scutellum C. Coleoptile. D. Tegmen
    11. Centrosome are present in.
    A. Plant cell b. Animal cell c. Both cell d. None
    12. Lysosomes contain
    A. Hormone B. Lytic enzyme C. Hydrolytic enzyme D. Useful material
    13. Axoneme having 9+2 doublet microtubule arrangement is found in.
    A. Cilia. B. Flagella C. Cilia and flagella D. Centriole
    14. Synapsis occure in which of the following stage of meiosis.
    A. Leptotene B. Zygotene C. Pachytene D. Diakinesis
    15. In a cell cycle during which phase chromosomes are arranged in equatorial plate ?
    A. Metaphase B. Anaphase C Telophase D. Prophase
    16. The no of mitotic cell division required to produce 256 cells from single cell would be.
    A. 10. B.12 C. 8 D. 6

    Part- B 2x8=16

    A) What are monocot and dicot plants give one example of each .
    B) Differentiate between phaeophyceae and Rhodophyceae.
    C) Define the following terms : bioluminescence, metameres, radula, poikilothermous
    D) Differentiate between pinnately, palmately compound leaves and Racemose and
    cymose inflorescence.
    E) Identify the following aestivation in corolla : imbricate, twisted, vexillary, valvate

    Identify the structure and label it at least 8 name.

    F) How is the study of plant anatomy useful to us


    G) Describe the following: centrosome & chromatin .

    Part C 3x6=18

    A) 1. Write down the significance of meiosis.


    2. What is g0 of cell cycle phase
    B) Describe the following: synapsis , bivalent, chiasmata.
    C) Explain plastids and it’s type and sectional view of chloroplast
    D) Explain the following in solanaceae family : Floral formula , economic
    importance, floral diagram .

    E) Write differences between ascocarp and basidiocarp .


    Or
    Define the term mycorrhiza. How are these associations affect a plant ?
    Explain with examples.
    F) Write brief account of mosses?
    Part D ( 1x4=4)

    Q A. Early morning meeta and her family returned back from few days holiday trip while
    preparing breakfast mitasa her mother using bread with Himesh layer grown over see
    stop her mother no to use such that she also explain her that it was due to the growth of
    bread mould see also advised her to keep bread in refrigerator for avoiding such growth
    I. Name the class to which bread mould belongs
    II. Name the bread mould
    III. Give two examples of the same class
    IV. What values shown by Mita?
    Q.B Match the column I with column II (1x4=4)
    Column I. Column II
    Porifera. Canal system
    Aschelminthes. Muscular pharynx
    Annelida. Jointed appendages
    Arthropoda. Metameres
    Q.C Write the symbols of the following. (4)
    Zygomorphic , perianth, actinomorphic ,carpels two free, epipetalous, inferior ovary,
    superior ovary
    Q.D Explain Meiosis I prophase with diagrams.
    (4)
    Q E. Define different types of chromosomes and functions of chromosomes
    (4)
    OR
    What are the aim of zoological parks botanical gardens and museums.

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