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Model Paper 1 BIOLOGY - Model Paper 1

Gujarat Board (GSEB) - STD 12 Science - BIOLOGY (GSEB - English Medium). 77 questions in this chapter.

Question types

Model Paper 1 question types

77 questions across 4 question groups — pick any mix to generate a BIOLOGY paper with step-by-step answer keys.

77
Questions
4
Question groups
5
Question types
Sample Questions

Model Paper 1 questions

One sample from each question group in this chapter. Select any group above to see the full set with answer keys.

Q 73 Marks Question3 Marks
A species - area curve is drawn by plotting the number of species against the area. How is it that when a very large area is considered the slope is steeper than that for smaller areas ?
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Q 12M.C.Q (1 Marks)1 Mark
Trees, shrubs and hurbs serially arranged in which layer is arrangement stratification?
  • A
    second, upper most lower
  • B
    lower second, tertiary
  • ✓
    upper most, second
  • D
    lower, upper most, second

Answer: C.

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Q 14M.C.Q (1 Marks)1 Mark
What is common to the following plants: Nepenthes; Psilotum, Rauwolfia and Aconitum ?
  • A
    All are ornamental plants
  • B
    All are phylogenic link species
  • ✓
    All are prone to over exploitation
  • D
    All are exclusively present in the Eastern Himalayas

Answer: C.

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Q 15M.C.Q (1 Marks)1 Mark
Match the animals given in column A with their location in column B:
Column AColumn B
(i) Dodo(A) Africa
(ii) Quagga(B) Russia
(iii) Thylacine(C) Mauritius
(iv) Steller's sea cow(D) Australia
Choose the correct match from the following:
  • A
    (i - a) (ii - c) (iii - b) (iv - d)
  • B
    (i - d) (ii - c) (iii - a) (iv - b)
  • C
    (i - c) (ii - a) (iii - b) (iv - d)
  • ✓
    (i - c) (ii - a) (iii - d) (iv - b)

Answer: D.

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Q 194 Marks Question4 Marks
During the course of evolution why DNA was chosen over as genetic material? Give reasons by first discussing the desired criteria in a molecule that can act as genetic material and in the light of biochemical differences between DNA and RNA.
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Q 204 Marks Question4 Marks
(A) In human, males are heterogametic and female are homogametic and feamels heterogametic ?
(B) Also describe as to, who determines the sex of an unborn child? Mention whether temperature has a role in sex determination.
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