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MODEL PAPER 8 BIOLOGY - MODEL PAPER 8

Gujarat Board (GSEB) - STD 11 Science - BIOLOGY (GSEB - English Medium). 38 questions in this chapter.

Question types

MODEL PAPER 8 question types

38 questions across 6 question groups — pick any mix to generate a BIOLOGY paper with step-by-step answer keys.

38
Questions
6
Question groups
5
Question types
Sample Questions

MODEL PAPER 8 questions

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

Q 62 Marks Questions2 Marks
The entire process of photosynthesis consists of a number of reactions. Where in the cell do each of these take place?
i. Synthesis of ATP & NADPH _________
ii. Photolysis of water __________
iii. Fixation of $CO _2$__________
iv. Synthesis of sugar molecule __________
v. Synthesis of starch __________
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Q 16Case study (4 Marks)4 Marks
Various parts of the plant such as stems leaves, and even fruits are modified into underground parts to perform various functions such as stems, leaves, and even fruits.
The stems in ginger and banana are underground and swollen due to storage of food. They are called rhizome. Rhizome of ginger is a modification of stem because it bears nodes, internodes, terminal buds, scaly leaves and buds, which give rise to aerial shoots. It is not a root because root does not have nodes and internodes. Also, rhizome does not perform the function of roots i.e. anchorage and absorption, rather it serve as reservoir for storage of food. Similarly, corm is an underground stem in Colocasia (jimikand) The tips of the underground stem in potato become swollen due to accumulation of food and forms tuber.

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i. Observe the given flow chart and mention what are the four types of Underground stem modification also mention one example of each. (1)
ii. Ginger is an underground stem but why it is distinguished from a root? (1)
iii. Why do the tips of modified stems in potatoes become swollen? (2)

OR

Are all underground parts of a plant roots? (2)
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Q 17Case study (4 Marks)4 Marks
R.H. Whittaker proposed a Five Kingdom Classification. The kingdoms defined by him were named Monera, Protista, Fungi, Plantae, and Animalia. The main criteria for classification used by him include cell structure, body organisation, mode of nutrition, reproduction and phylogenetic relationships. The three-domain system has also been proposed that divides the Kingdom Monera into two domains, leaving the remaining eukaryotic kingdoms in the third domain and there by a six kingdom classification. Earlier classification systems included bacteria, blue-green algae, fungi, mosses, ferns, gymnosperms and the angiosperms under 'Plants'. The character that unified this whole kingdom was that all the organisms included had a cell wall in their cells.
Robert H. Whittaker (1969)
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i. Observe Robert H. Whittaker (1969) flow chart of classification and mention what type of organisms were included in Kingdom Animalia? (1)
ii. Mention two differences between prokaryotic and eukaryotic cells. (1)
iii. Linnaeus used which kingdom of classification? State two drawbacks of Linnaeus two kingdom classification. (2)

OR

Is Fungi- Autotrophic (Photosynthetic) and Heterotrophic the correct match? Also, Mention the difference between the walls of fungi and green plants. (2)
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Q 23Assertion & Reason1 Mark
Assertion (A): Tracheae, primary, secondary and tertiary bronchi are supported by incomplete cartilaginous rings.
Reason (R): These rings of cartilage make the wall non-collapsible.
  • A
    Both A and R are true and R is the correct explanation of A.
  • B
    Both A and R are true but R is not the correct explanation of A.
  • C
    A is true but R is false.
  • D
    A is false but R is true.
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Q 24Assertion & Reason1 Mark
Assertion (A): Potassium is only essential for animals.
Reason (R): Along with sodium is essential for the conduction of impulses in nerve cells.
  • A
    Both A and R are true and R is the correct explanation of A.
  • B
    Both A and R are true but R is not the correct explanation of A.
  • C
    A is true but R is false.
  • D
    A is false but R is true.
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Q 25Assertion & Reason1 Mark
Assertion (A): Medulla is considered as a respiratory centre in animals.
Reason (R): Rate of breathing is regulated by the medulla because of the changes in the O₂ content of the blood.
  • A
    Both A and R are true and R is the correct explanation of A.
  • B
    Both A and R are true but R is not the correct explanation of A.
  • C
    A is true but R is false.
  • D
    A is false but R is true.
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Q 26Assertion & Reason1 Mark
Assertion (A): Mucor, Rhizopus and Albugo fungi are members of Phycomycetes.
Reason (R): The mycelium is aseptate and coenocytic and sexual reproduction takes place by zoospores or by aplanospores.
  • A
    Both A and R are true and R is the correct explanation of A
  • B
    Both A and R are true but R is not the correct explanation of A.
  • C
    A is true but R is false.
  • D
    A is false but R is true.
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