Goa Board Class 11 Sample Paper Biology

Sample Paper
&
Question Paper Pattern
2022
2023

GOA BOARD

Goa Board of Secondary and Higher Secondary Education
Alto – Betim, Goa
Model Paper
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Subject : Biology Std : XI
Time : 1 Hour Maximum marks : 20
Year 2021 -22

Instructions :
(i) All questions are compulsory.
(ii) Draw diagrams in lead pencil only.
(iii) The question paper consists of three (3) Sections A, B and C.
• Section A has 04 questions of 01 mark each.
• Section B has 05 questions of 02 marks each.
• Section C has 02 questions of 03 marks each.
(iv) The total number of questions is 11.
(v) There is no overall choice, however an internal choice is provided in one question of
Section C.
(vi) Multiple choice questions should be attempted only once, if attempted more than
once
it will not be evaluated. Choose the correct option and rewrite on the answer-sheet.

Section A ( 1 mark each )

1) In Liverworts reduction division takes place in _______________.
• the asexual buds called gemmae
• the sporophyte capsule
• the leafy stage protonema
• the leaf like sporophylls
2) If a small part of the flat worm Planaria is cut, it grows back. This characteristic is called
____.
• Reproduction
• Budding
• Regeneration
• Division
3) Write the Scientific name of Mango.
4) The Cyanobacteria Anabaena has specialized cells called Heterocysts. Give reason.

Section B ( 2 marks each )

5) Write the importance of roots and leaves of Gymnosperms.
6) Differentiate between Brown Algae and Red Algae.
7) Define the term Inflorescence and name the two major types.

8) On a field trip to study beach ecosystem, students observed that the Sea had turned red
in
colour. Identify the phenomenon and state its effect.

9) Draw a neat diagram of the Structure of Mitochondrion.

Section C ( 3 marks each )

10) Explain the different types of flowers based on the position of floral parts on the
thalamus.
11) Describe the structure of a chloroplast.
OR
11) Describe the structure of a Nucleus.

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Blueprint: Biology Model Paper : Std XI : Marks 20

Unit Content Marks Objective Total
Area Knowledge Understanding Application Skill
VSA SA1 SA2 VSA SA1 SA2 VSA SA1 SA2 VSA SA1 SA2
1 2 3 1 2 3 1 2 3 1 2 3
Diversity The living 2 1(1) 1(1) 2
In the livingworld
world Biological 3 1(1) 1(2) 3
classification
Plant 5 1(2) 1(2) 1(1) 5
kingdom
Structural Morphology 5 1(2) 1(3) 5
organization of flowering
in plants plants
and animals
Cell – Cell: the unit 5 1(3) 1(2) 5
Structure of life Or
and 1(3)
function
20 08 06 04 02 20

Goa Board of Secondary and Higher Secondary Education
Biology Model Paper – Std XI – Answer Key
Year 2021-2022

Questio Answer Marks Total
n No. marks
1 The sporophyte capsule 1 1
2 Regeneration 1 1
3 Mangifera indica 1 1
4 Heterocysts are cells which fix atmospheric nitrogen 1 1
5 Roots are generally tap roots, may form mycorrhiza or coralloid 1
roots 2
Leaves may be simple or compound, adapted to withstand 1
extremes.
Needle like leaves reduce surface area, thick cuticle and sunken
stomata reduce water loss.
6 Brown Algae Red Algae
1. Pigments are Chlorophyll a, 1. Pigments are Chlorophyll a,
c d
and fucoxanthin and phycoerythrin
Any 4 2
2. Stored food is Mannitol and 2. Stored food is Floridean points
laminarin starch
3. Cell wall made of Cellulose 3. Cell wall made of Cellulose,
and pectin and polysulphate
algin esters
4. Asexual reproduction with 4. Asexual reproduction with
Biflagellate zoospores non-motile spores
5. Phaeophyceae 5. Rhodophyceae
7 Inflorescence – The arrangement of flowers on the floral axis. 1 2
Racemose and Cymose 1
8 The phenomenon is Red tides/rapid multiplication of red 1 2
dinoflagellates
Effect – Toxins released by such large number of dinoflagellates 1
may kill other marine animals such as fishes.
10 Hypogynous – gynaecium occupies highest position, and other 1 3
floral parts are below it. Ovary is superior. Ex. Mustard, China
rose
Perigynous – gynaecium is in the centre, other floral parts 1
arranged at the rim of the thalamus. Ovary half superior half
inferior. Ex. Plum, rose 1
Epigynous – gynaecium fused with the thalamus, other floral
whorls grow above the ovary. Ovary is inferior. Ex. Guava,
Cucumber
11 Chloroplast – It may be lens-shaped, oval, spherical, discoid or 1
ribbon like. It has a double membrane. Inner membrane is less 3

permeable, space inside is called the stroma

1

Thyllakoids are flattened membranous sacs present in the
stroma, arranged in piles called Grana. Chlorophyll pigments are
present in the thyllakoids. 1
Stroma lamellae are membranous flat tubules connecting the
grana. The stroma contains enzymes required for synthesis of
carbohydrates and proteins. Stroma also contains small double
stranded DNA molecules and ribosomes.
OR

11 Nucleus – Enclosed by a double membrane nuclear envelope, 1
bears minute nuclear pores. Outer envelope is continuous with 3
endoplasmic reticulum and bears ribosomes.
Nuclear matrix or nucleoplasm contains nucleoli and chromatin 1
Chromatin contains DNA and Histones, non histone proteins and 1
RNA.