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 BIOLOGY SAMPLE PAPER SET-II

Sample Paper Biology set-I

           SECTION - A

Q1. What does ICZN stand for?

Q2. Name the cells that make up more than half the volume of neural tissue. 

Q3. Suppose you accidentally find an old preserved permanent slide without a label. In 

your effort to identify it, you place the slide under the microscope and observe the 

following features: -

a. Unicellular b. Well defined nucleus c. Biflagellate–one flagellum lying longitudinally 

and the other transversely. What would you identify it as? Can you name the kingdom it 

belongs to?

Q4. A plant shows thallus level of organization. It shows rhizoids and is

haploid. It needs water to complete its life cycle because the male gametes

are motile. Identify the group to which it belongs to?

Q5. The body cavity is the cavity present between the body wall and the gut wall. In

some animals, the body cavity is not lined by mesoderm. Name the term used for such

animals?

Q6. Name the term used for the condition in which the stamens are attached to the

perianth ?

Q7. The genomic content of the nucleus is constant for a given species whereas the

extrachromosomal DNA is found to be variable among the members of a population. Is

this statement true or false?

Q8. An amino acid under certain conditions has both positive and negative

charges simultaneously in the same molecule. What is such a form of amino acid

called as?

Q9. It is said that the one cycle of cell division in human cells (eukaryotic cells) takes 24

hours. Which phase of the cycle, do you think occupies the maximum part of the cell

cycle?

Q10. Name is the first stable product of the C3 cycle.

Q11.These questions consist of two statements each, printed as Assertion(A) and

Reason(R). While answering these questions, you are required to choose any one of

the following four responses.

Q11: ASSERTION (A): Hypogynous Ovary is said to be superior.

REASON(R): All floral parts are located on the rim of the thalamus at the same level in

Hypogynous condition and therefore ovary become superior.

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) - Bo

th A and R are false.

OR

ASSERTION (A): In cymose inflorescence, the main and lateral axis end in a

flower.

REASON(R): the arrangement of flowers in this inflorescence is centrifugal.

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) - Both A and R are false.

Q12: ASSERTION (A) Reproduction cannot be considered an all-inclusive defining

characteristic of living beings.

REASON (R) Budding is observed in lower organisms like yeast and hydra.

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) - Both A and R are false

Q.13: ASSERTION (A): Amino acids are known as α-amino acids.

REASON (R): Amino acids are organic compounds containing an amino group and

carboxylic group as substituent on the α-carbon.

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) - Both A and R are false

Q.14 ASSERTION (A): The splitting of water is associated with PS II.

REASON (R): Water is split into H+

, O2 and electrons.

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) - Both A and R are false

Q15. Read the following and answer any four questions from 15(i) to 15(v) given

below:

A flower has four whorls; calyx, corolla, androecium and gynoecium. These are

attached to the swollen terminal of pedicel called the thalamus. Flowers can be

trimerous, tetramerous or pentamerous depending on the multiple of floral

appendages present 3, 4 or 5. Types of flowers depending on the presence or

absence of bracts (reduced leaf present at the base of pedicel); Bracteate or

Ebracteate. Types of flowers based on the position of the ovary:

1. Hypogynous- gynoecium occupies the highest place, above all the other

parts. The ovary is known as superior, e.g. brinjal, china rose, mustard

2. Perigynous- gynoecium is present at the same level as the rest of the

parts of a flower. The ovary is known as half inferior, e.g. peach, plum,

rose

3. Epigynous- thalamus encloses the ovary completely and other parts are

present above it. The ovary is known as inferior, e.g. ray florets of a

sunflower

, guava, cucumber

From your understanding on this topic, answer the following questions: -

i. Which of the following make up of the corolla as a single unit?

a.Petals b.Stamens c.Sepals d.pollens

ii. Androecium is the collective name given to the group of-

a.Pistils b.Stamens c.Sepals d.Petals

iii.The form of thalamus in which the ovary is at the top and the other floral parts are

borne below it is termed as:-

a.Perigyny b. Epigyny c. Hypogyny d.Semi-epigyny

iv. What type of placentation is found in sweet pea: -

 a. Axile b. Free central c. Marginal d. Basal

v. Assertion: In mustard flowers are hypogynous.

 Reason: In mustard flowers, other floral whorls are present above the level of ovary.

a. Both assertion and reason are true, and the reason is the correct explanation of

the assertion.

b. Both assertion and reason are true, but the reason is not the correct explanation

of the assertion.

c. Assertion is true but reason is false.

d. Both assertion and reason are false.

Q16 Read the following and answer any four questions from 16

(i) to 16(v) given

The fluid mosaic model was proposed by S.J. Singer and Garth L. Nicolson. This model

explains the structure of the plasma membrane of animal cells as a mosaic of

components such as phospholipids, proteins, cholesterol, and carbohydrates. These

components give a fluid character to the membranes.

Each phospholipid has a hydrophilic head pointing outside and a hydrophobic tail

forming the inside of the bilayer.

Cholesterol and proteins are embedded in the bilayer that gives the membrane a

mosaic look. Each component has a specific function to perform.

Considering the Fluid mosaic model of plasma membrane, answer the following

questions:

I. Neutral solutes move across the membrane by-

(a) Osmosis

(b) Simple diffusion

(c) Protein channel

(d) Na-K pump

II. Plasma membrane is made up of

(a) A protein, a lipid and a cellulose layer

(b) Bimolecular lipid layer surrounded by protein layers

(c) A protein layer between two lipid layers

(d) A lipid layer between two protein layers

III. Which of the following does not require carrier molecules during transport

through cell membranes:-

a. Simple diffusion b.Facilitated diffusion c. Na-K transport d.Active transport

IV. What is the percentage of protein and lipid in plasma membrane of human

erythrocyte?

(a) 52 and 40

(b) 45 and 50

(c) 60 and 30

(d) 55 and 40

V. In the plasma membrane, Glycolipids are usually situated in

(a) cannot be predicted, it varies according to the cell types

(b) inner leaflet of the plasma membrane

(c) the outer leaflet of the plasma membrane

(d) evenly distributed in both outer and inner leaves of plasma membrane

                   SECTION - B

Q17.Brinjal and potato belong to the same genus Solanum, but two different species.

What defines them as separate species?

Q.18: What is the difference between a virus and a viroid?

Q.19: Provide appropriate technical term in the space provided.

a. Stinging organ of jelly fishes ______________________________.

b Lateral appendages in aquatic annelids ___________________.

Q.20: How can you differentiate between free central and axile placentation?

OR

Draw a simple and a compound leaf showing the difference between the two.

Q.21: Write the appropriate type of tissues in column B according to the functions

Q.22: What is mesosome in a prokaryotic cell? Mention the function that it performs?

OR

A cell having 32 chromosomes undergoes mitotic division. During metaphase, what will

the chromosome number (N) of the cell? During anaphase, what will the DNA content of

the cell be?

Q.23: Formation of the enzyme-substrate complex (ES) is the first step in catalysed

reactions. Describe the other steps until the formation of the product.

Q.24: Why is meiosis called reductional division & mitosis called equational division?

Q.25: The entire process of photosynthesis consists of a number of reactions. Where in

the cell does each of these take place?

a. Synthesis of ATP & NADPH __________________________

b. Photolysis of water __________________________

c. Fixation of CO2 __________________________

d. Synthesis of sugar molecule __________________________

                 SECTION - C

Q.26: Name the algae and fungal part of lichen? Write one use of lichen.

Q.27: Heterospory i.e., the formation of two types of spores – microspores and

megaspores is a characteristic feature in the life cycle of a few members of

pteridophytes and all spermatophytes. Do you think heterospory has some evolutionary

significance in the plant kingdom?

Q.28: Distinguish between:-(a) Adipose and blood tissue (b) Cardiac muscle and

striated muscle(c)Dense regular and dense irregular connective tissue

Q.29: Glycine and Alanine are different with respect to one substituent on the α -carbon.

What are the other common substituent groups?

Q.30: The figure shows the effect of light on the rate of photosynthesis Based on the

graph, answer the following questions:

(i) At which point(s) A, B or C in the curve, light is a limiting factor?

(ii) What could be the limiting factor in region A?

(iii) What do region C and D represent on the curve?

OR

Complete the flow chart for cyclic photophosphorylation of the photosystem-I:

               SECTION - D

Q31: Name the stage of the Prophase -1 at which the following occur: -

(a) synapsis

(b) bivalent

(c) chiasmata

2. How does cytokinesis in plant cells differ from that in animal cells?

Q32 a. Differentiate between C3 and C4 pathways (three important points).

 b. Rubisco is an enzyme that acts both as a carboxylase and as oxygenase. Why

do you think Rubisco carries out more carboxylation in C4 plants? (3+2)

OR

(i)Observe the diagram and answer the following

a. Which group of plants exhibits these two types of cells?

b. What is the first product of C4 cycle?

c. Which enzyme is there in bundle sheath cells and mesophyll cells?

(ii)Briefly mention the Law of limiting factors. (3+2)

Q.33: Provide a technical term for the following:

1. Blood filled cavity in arthropods

2. A stinging organ of jellyfish

3. Free-floating form of Cnidaria

4. Lateral appendages in aquatic annelids

5. Common opening of alimentary and urogenital tract.

                                         OR

(i) Give three major differences between chordates and non-chordates?

(ii) Mention two similarities between Aves and mammals.