First Mid Term Model Questions

12th Standard EM

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Biology

Time : 01:00:00 Hrs
Total Marks : 50
    5 x 1 = 5
  1. In which type of parthenogenesis are only males produced?

    (a)

    Arrhenotoky

    (b)

    Thelytoky

    (c)

    Amphitoky

    (d)

    Both a and b

  2. The site of embryo implantation is the

    (a)

    Uterus

    (b)

    Peritoneal cavity

    (c)

    Vagina

    (d)

    Fallopian tube

  3. Co-dominant blood group is

    (a)

    A

    (b)

    AB

    (c)

    B

    (d)

    O

  4. Assertion (A): Zea mays is a monocotyledonous plant.
    Reason (R): Shield shaped cotyledon is called scutellum.

    (a)

    A is correct R is incorrect.

    (b)

    R explains A.

    (c)

    Both A and R are incorrect.

    (d)

    Both A and R are correct. R does not explain A.

  5. Assertion (A): DMH -11 is a transgenic mustard.
    Reason (R): It is developed by using bamase/ barstar technology.

    (a)

    Both A and R are wrong.

    (b)

    A is right R is wrong.

    (c)

    R explains A.

    (d)

    A and R are right, R does not explain A.

  6. 5 x 2 = 10
  7. How is polyspermy avoided in humans?

  8. What is cervical dysplasia?

  9. Mention the main objections to Darwinism.

  10. Mention any two differences between Homo habilis and Homo erectus

  11. What are mycorrhizal?

  12. 5 x 3 = 15

  13. (i) Identify the Process
    (ii) Name the Organism

  14. Name the hormones produced from the placenta during pregnancy.

  15. In the diagram given below.

    (a) Identify the diagram
    (b) Label the parts indicated.

  16. Differentiate foeticide and infanticide

  17. What are restriction enzyme. Mention their type with role in Biotechnology.

  18. 4 x 5 = 20
  19. Identify the given image and label its parts marked as a, b, c and d

  20. The following is the illustration of the sequence of ovarian events (a-i) in a human female.

    a) Identify the figure that illustrates ovulation and mention the stage of oogenesis it represents.
    b) Name the ovarian hormone and the pituitary hormone that have caused the above-mentioned events.
    c) Explain the changes that occurs in the uterus simultaneously in anticipation.
    d) Write the difference between C and H.

  21. Why crossing over is important?

  22. How Agarose Gel Electrophoresis is performed?

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