First Semester Examination - March 2022
Subject : Biology Paper / 48
Handwriting / 02
Class : 7 ….......
Total / 50
Duration : 1 period Date : ………………..…………
Candidate’s name : .......................................................………… Admission no: .....…........……...
• This paper consists of Part I and Part II.
• Answer all the questions on the paper itself.
• Marks will be deducted for misspelled words and for instructions not being followed.
PART – I
Select the most suitable answer.
(1) All organisms in a particular species
(a) are different from one another.
(b) cannot breed together to produce fertile offspring.
(c) share the same characteristics.
(d) share the same two-word Latin name.
(2) Different coloured flowers in different Canna plants in the same garden describe
(a) characteristics among them. (b) variation among them.
(c) adaptations among them. (d) different species in them.
(3) What is an example for organic matter?
(a) Water (b) Sand (c) Cow-dung (d) Sunlight
(4) Which structure of a root hair cell is adapted to its function?
(a) Root hair (b) Nucleus (c) Cell wall (d) Cell membrane
(5) Two-word naming system was successfully introduced by
(a) Louis Pasteur. (b) Alexander Fleming.
(c) Galileo. (d) Carl Linnaeus.
Refer to the following organisms to answer questions 6, 7 and 8.
Algae Mosses Conifers Ferns Flowering plants
(6) Which pair of the organisms produces spores for their reproduction?
(a) Ferns and mosses (b) Algae and flowering plants
(c) Mosses and conifers (d) Ferns and conifers
Grade 7 Biology First Semester Examination - March 2022
Prepared for Lyceum International Schools by Lyceum Assessments
2
(7) Which of the following organisms produce seeds inside the cones?
(a) Conifers (b) Flowing plants (c) Ferns (d) Algae
(8) Unicellular organisms are found in
(a) ferns. (b) mosses. (c) conifers. (d) algae.
(9) Which of the following is not correct about the plant cell wall?
(a) It gives a shape to the cell. (b) It contains chlorophyll.
(c) It protects the cell. (d) It is made up of cellulose.
(10) Which disease can be prevented by taking antibiotics?
(a) Influenza (b) Malaria (c) Tuberculosis (d) Cold
[Total = 2 x 10 = 20 marks]
PART – II
Answer all the questions on the paper itself.
1. Anna went to her home garden to observe the nature. She saw a dead locust and an earthworm
among dead leaves near the garbage pit. She observed the organisms using a hand lens and
decided that both of them belonged to invertebrates.
(i) How did she confirm that the locust and the earthworm were dead?
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(1 mark)
(ii) How did she decide that the locust and the earthworm were invertebrates?
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(2 marks)
(iii) What is the invertebrate group of the
a) locust? - ---------------------------------------------------------------------------------------
b) earthworm? - ---------------------------------------------------------------------------------------
(2 marks)
(iv) Mention one unique external body feature that Anna observed in the
a) locust. - ---------------------------------------------------------------------------------------
b) earthworm. - ---------------------------------------------------------------------------------------
(4 marks)
(v) Write one common feature of the locust and the earthworm.
--------------------------------------------------------------------------------------------------------------
(2 marks)
Grade 7 Biology First Semester Examination - March 2022
Prepared for Lyceum International Schools by Lyceum Assessments
3
(vi) She went back to her home garden and looked for more dead organisms. She noticed that
dead matter was undergoing some changes inside the pit itself.
a) What is the name of the process by which the dead matter is broken down in to simpler
substances?
---------------------------------------------------------------------------------------------------------
(1 mark)
b) Mention two types of micro-organisms that are involved in the process mentioned in
part (vi), question (a).
I. ---------------------------------------------------------------------------------------------------
II. ---------------------------------------------------------------------------------------------------
(2 marks)
c) Anna saw some small plants that were growing healthily near the pit. She realized that
the action of micro-organisms on dead matter was really important. Explain why.
---------------------------------------------------------------------------------------------------------
(2 marks)
d) The action of micro-organisms is sometimes a nuisance due to some reasons.
Mention one of them.
---------------------------------------------------------------------------------------------------------
(2 marks)
[Total = 18 marks]
2. John had some grapes for his breakfast and he collected the seeds in each of them separately to
see the difference between numbers of seeds in them. Then he used his results to draw the
frequency diagram given below.
No. of grapes
14
12
10
8
X
6
Y
4
2
0
1 2 3 4 5
No. of seeds
Grade 7 Biology First Semester Examination - March 2022
Prepared for Lyceum International Schools by Lyceum Assessments
4
Answer the following questions using the graph given above.
(i) What is the range of the grape seeds?
--------------------------------------------------------------------------------------------------------------
(2 marks)
(ii) What is the mode for the number of grape seeds?
--------------------------------------------------------------------------------------------------------------
(2 marks)
(iii) What is the median number of grape seeds?
--------------------------------------------------------------------------------------------------------------
(2 marks)
(iv) Find the total number of grape seeds he had collected.
--------------------------------------------------------------------------------------------------------------
(2 marks)
(v) Find the mean number of grape seeds.
--------------------------------------------------------------------------------------------------------------
(2 marks)
[Total = 10 marks]
END
Ref:CG
Grade 7 Biology First Semester Examination - March 2022
Prepared for Lyceum International Schools by Lyceum Assessments
