Subject

Biology

Class

ICSE Class 10

Pre Boards

Practice to excel and get familiar with the paper pattern and the type of questions. Check you answers with answer keys provided.

Sample Papers

Download the PDF Sample Papers Free for off line practice and view the Solutions online.
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 Multiple Choice QuestionsShort Answer Type

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71.

Account for the following:

(ii) One feels blinded for a short time while coming out of a dark room.


In the dark, the pupil is wide open to let in more light. Also, the pigment visual purple
is generated in greater amounts. When we come out int bright light, the visual purple
is bleached and iris muscles contract to diminish the pupil diameter. Since the pigment of rods is bleached in the bright light the eyes take a little time in adapting to the bright light and hence we are blinded in bright light. 

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72.

Account for the following:

(iii)The leaves of certain plants roll up on a bright sunny day.

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73.

Account for the following:

(iv) An alcoholic person walks unsteadily when drunk.

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74.

Account for the following:

(v) Sleeping under a tree at night is not advisable.

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 Multiple Choice QuestionsLong Answer Type

75.

The figure below represents an experimental setup to study a physiological process in

plants.

(1) Name the physiological process being studied.

(11) Explain the process.

(iii) What is the aim of the experiment?

(iv) Give a well-balanced equation to represent the process. 
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76.

Given below is the outline of a male reproductive system 



(1) Name the parts labelled 1 to 5.

(ii) State the functions of the parts labelled l. and 4.

(iii) Name the cells of part 5whichh produce testosterone.

(lv)Why is the structure 5 present outside the body in the scrotal sac?

(v) What is semen?

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77.

Given below is the diagram of an apparatus setup to study a very important physiological process:

i.  Name the process being studied.

ii. Explaln the process.

iii What change would you observe in the thistle funnel containing sugar solution

after about 10 minutes?

iv Is sugar solution hypertonic or hypotonic?

v Name the part of the plant cell which is represented by the sugar solution.

vi Explain why much salt is added to pickles.

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78.

Given below is an outline of the human body showing the important glands.

(i) Name the glands marked 1 to 5.

(ii) Name the hormone secreted by 2. Give one important function of this hormone.

(iii) Name the endocrine cells present in part 3.

(iv) Name the hormone secreted by part 4. Give one important function of this hormone. 

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79.

(a) Given below is a diagram representing a stage during mitotic cell division in an animal cell

(i) Identify the above stage. Give a reason to support your answer.

(ii) Name the parts labelled 1, 2, 3 and 4.

(iii) What is the function of part 3 ?

(iv) Name the stage which comes just after the stage shown in the diagram. Draw a well-labelled diagram of this stage.
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