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Biology 11 Past Paper 2022 | Notely

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All Biology 11 papers

Class 11 · Past paper

Biology 11 past paper 2022

80 published questions in this index. The full practice view lets you work through them and track your own attempts.

28 MCQs52 written questionsPractise this paper

Question index

1
The **DNA** is present in:
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1
Narrate the role of **Peroxisomes** and **Glyoxisomes** in plant cells.
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1
Describe the steps which lead to the evolution of seed in seeded plants.
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1
The organelle which will be more active in **liver cells** after alcohol intake is:

This is a skimmable index, not a replacement for the study surface. Open the practice view to answer questions and use the linked study material.

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1

Compare **Autophagy** and **Autolysis**.

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1

Describe **Life Cycle of a Fern**. Also sketch and label the life cycle.

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2

Which one of the following is **mismatched**?

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2

Describe three types of Cofactors with one example of each.

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2

**Liver** is an Accessory Gland. Describe its **Storage** and **Metabolic** roles.

Part C6 marksannual

2

The property of water which helps to maintain integrity of lipid bilayer is:

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2

Elaborate the structure of **Cilia** and **Flagella**. How does Cilia help in movement?

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2

Describe **Mutualism** established in **Mycorrhizae** and **Lichen Association**.

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3

The technique used to separate fragments of charge bearing polymers is:

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3

**Starch** is a homopolysaccharide. (a) How can presence of starch be confirmed in a given sample? (b) Differentiate between its types.

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3

Describe **General Characteristics of Mammals**. Also name subgroups of Mammals.

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3

β 1-4 **Glycosidic linkage** is found in:

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3

What are **Stereoisomers**? Why are laboratory-manufactured sweeteners not metabolized in the body?

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3

Write General Characteristics of Phylum Arthropoda.

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4

Complete the table regarding **Properties of Water**: | Sr. No. | Property of water | Benefit to life | | :--- | :--- | :--- | | I | High polarity | | | II | | As transport medium…

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4

Explain the main features of Watson and Crick model of DNA.

Part C6 marksannual

4

The causative agent of **Hepatitis D** is:

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4

Justify the significance of sequence of amino acids in Normal and Sickle Cell Haemoglobin.

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4

How is blood flow through the heart regulated by valves?

Part C4 marksannual

5

Which of the following is **NOT** an electron acceptor during photophosphorylation?

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5

List any three groups of enzymes on the basis of Types of Reactions with one respective enzyme example.

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5

How do the **SA node**, **AV node** and **Purkinje Fibers** play a role in conducting a heartbeat in the human heart?

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5

The physical method used to control Bacteria is:

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5

What are **Prostaglandins**? Mention their role in living organisms.

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5

In **Systemic circulation**, write about circulation of blood to heart, liver and kidneys.

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6

Choose the option which best describes the diagram provided: [Diagram: A heart-shaped or kidney-shaped prothallus structure typical of a fern gametophyte with rhizoids.]

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6

Write any three **Plasma Membrane Proteins** with their respective functions.

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6

Explain **Mechanism of movement of Sugars** in plant body. Illustrate with a labelled diagram.

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6

The products formed during **light dependent reactions** are:

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6

Narrate the mechanism of **Induced Fit Model** of enzyme working.

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6

Explain the structure of a villus. How is its structure well-suited for the absorption of different digested food such as glucose, amino acids and fats?

Part C7 marksannual

7

*Agaricus* belongs to:

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7

Draw **Z-scheme** for explaining the events of light dependent reactions of photosynthesis.

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7

A sequence of three nucleotides called **anticodon** is part of:

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7

Outline the steps of Krebs cycle with labelling.

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7

How does K⁺ ions influx and efflux control opening and closing of stomata?

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8

What is **Absorption Spectrum**? How do Absorption Spectrum of $Chl\ a$, $b$ and carotenoids differ?

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8

Identify the type of immunity produced after using **vaccine**:

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8

a) List the events of Photorespiration. b) How is Photorespiration disadvantageous?

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9

**Allergic response** is produced due to production of:

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9

Write down steps of **Lytic cycle** in Bacteriophage.

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9

Compare characteristics of **virus** as non-living and living organism.

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10

Complete the table regarding **Diseases**: | Sr. No. | Disease | Causative agent | Symptoms | Prevention | | :--- | :--- | :---: | :---: | :---: | | I | [Peptic ulcer/Gastric ulcer…

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10

Presence of fats in intestine causes release of bile under the influence of:

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10

The diagram shows HIV. a) Name the parts labelled as A and B. b) Which cells are affected by HIV? c) List opportunistic diseases caused by HIV infection. [Diagram: Cross-section di…

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11

Why **Archaea** are regarded as **Extremophiles**? Elaborate answer with examples.

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11

**Secondary xylem** is produced by the activity of:

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11

Complete the table regarding **Gram positive** and **Gram negative** bacteria for the following characters: I) Thickness, II) Peptidoglycan, III) Periplasmic space.

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12

An organism with **Chlorophyll a**, **phycobilins** and **heterocyst** is:

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12

Presence of shelled egg, dry skin and internal fertilization are evolutionary adaptations in:

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12

Differentiate photosynthesis in Cyanobacteria and Bacteria.

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13

In human stomach **$HCl$** is secreted by:

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13

Which cells produce **Antibody Mediated Response** and how?

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13

All of the following are characteristics of **Chondrichthyes** EXCEPT:

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13

List and elaborate any six salient features of Protozoa.

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14

The causative agent of **Cotton Leaf Curl Disease** is:

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14

Relate the evolutionary adaptations in **Digestion**, **Respiration** and **Nervous System** of **Echinoderms**.

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14

The arrangement of **flagella** in the bacterial cell shown in the diagram is:

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14

Write about cause, prevention and treatment of **Dyspepsia**.

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15

Which one of the following characteristics is **NOT** related to Algae?

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15

Elaborate major roles performed by **large intestine** in humans.

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15

**Cyclosis**, the movement of cytoplasm, is controlled by:

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15

Differentiate between **Protostomes** and **Deuterostomes**.

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16

The thickest layer of the left ventricle of human heart is:

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16

Draw and label the life cycle of a slime mold.

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16

In bacterial cell the absorption of DNA from medium to cell results in:

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16

Write about the structure of a typical antibody.

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17

The transfer of antibodies from one individual to another individual is a type of:

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17

**Fungi** are neither placed in Plantae nor in Animalia but in a separate kingdom Fungi. Justify.

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17

List the adaptations in **Xerophytes** which enable them to live in that specific environment.

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18

Classify plants on the basis of **Photoperiod** with one example of each group.

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18

**Inflammatory response** is a type of Non-Specific Defence. State its events.

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19

What is **Transduction** and how it occurs in bacteria?

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19

Write down the principle of Angioplasty.

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20

If a cell is infected by microbes, how will natural killer cells act?

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20

What are **Irreversible Non-Competitive Inhibitors**? Describe with examples.

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