josephitesgkp.edu.in ICSE Class X Biology Sample Question Paper : St Joseph’s School

Name of the University : St Joseph’s School Khorabar, Gorakhpur
Name of the Exam : Preminary Examination
Document Type : ICSE Sample Papers for Class 10
Website : Biology
Website : http://www.josephitesgkp.edu.in/
Download Sample Question Paper : https://www.pdfquestion.in/uploads/25216-Biology.pdf

St Joseph’s School ICSE Class X Biology Question Paper

Preliminary Examination Year 2016-2017
Time: : 2 Hours
Marks :80

Related : St Joseph’s School Khorabar, Gorakhpur ICSE Class X English Language Sample Question Paper : www.pdfquestion.in/25208.html

Section I is compulsory section
Section II has 6 questions. Solve any four.

** ICSE Sample papers of some of the top icse schools of India can be downloaded from here.
** These sample papers are for Class 10 ICSE 2017 board examinations.
** Also called as specimen papers or pre-selection papers conducted in several good icse schools in india.

Instructuion

** You will not be allowed to write during the first 15 minutes.
** This time is to be spent reading the question paper.
** The time given of the head of this paper is the time allowed for writing the answers.
** Attempt all four questions.
** The intended marks for questions or parts of questions are given in brackets ().
** You are advised to spend no more than 35 minutes in answering Question 1 and 20 minutes in answering

Sample Question

Answers to this paper must be written on the paper provided separately. You will not be allowed to write for the first 10 minutes. This time is to be spent in reading the question paper.

Section I

40 MARKS :
Question 1 (10)
a) Name them.
i. V shaped chromosome having centromere at the centre.
ii. Membrane which allows solvent molecules to pass through but not solute particle.
iii. Genetic compositions of an organism.
iv. Organ where urea is produced.
v. Reservoir of urine.
vi. Structures through which guttation occurs.
vii. A green fuel.
viii. Study of size and shape of chromosomes on a chart.
ix. Onset of menstrual cycle.
x. Enzyme present in sperm.

b) Define (5)
i. Allele
ii. Disinfectant
iii. Mutation
iv. Vaccination
v. Populated Density

c) Give exact location and function of the following (5)
i. Acetylcholine
ii. Inguinal Canal
iii. Bundle of HIS
iv. Hypothalamus
v. Ear ossicles

d) i. Define the phenomenon described above.
ii. What is its importance?
iii. Draw the next stage.
iv. Define synapis.
v. What do you mean by ‘Homologous chromosome’?
vi. Why is meiosis known as reduction division?
vii. Give 2 other differences between mitosis and meiosis.

e) A homozygous tall plant (T) bearing red coloured flowers(R) is crossed with a Homozygous dwarf (t) plant bearing white flower (r) i. Give the genetype and phenotype of the F1, generation.
ii. Mention the possible combinations of gametes that can be from the F1, hybrid plant.
iii. List the phenotype of the offsprings of the F2 generation.
iv. Define gene. v. State Mendels Law of segregation

Section II

Solve any 4 questions from 6 questions. Question 2 a) In relation to the double helix structure below answer the following questions.
Question 2
a) In relation to the double helix structure below answer the following questions.
(5) i. Who proposed the medal?
ii. What are the 2 types of nitrogenous bases?
iii. A DNA strand nitrogenous bases in the sequenced T, C, G. Draw its complement
iv. Give the fall form of A, T, C, G. v. A hemophilic man marries a carrier woman.
Find out the probability of the off spring having the diseases.

b) Name the hormone responsible for the following function. (5)
i. Contraction of uterus during child birth.
ii. Maintaining glucose level in blood.
iii. Conversion of glycogen to glucose.
iv. Regulates basal metabolism.
v. Influence secondary sexual characteristic in males.
vi. Responsible for growth body.
vii. Increases reabsorption of water in kidneys.
viii. Helps react to abnormal situation.
ix. Causes cretinism.
x. Causes hair growth in female.

Question 3
a) The following diagram shows a cross section of the male reproductive system. (5)
i. Name parts 1, 2.
ii. Give the function of parts 3 and 4.
iii. Name the hormone and hormone producing cell in the testis.
iv. Why are sperms produced in large number?

Section III

Question 5
a) Give reasons for the following statements. (5)
i. When you enter a dark room you cannot see clearly for some seconds.
ii. Pitaitary is a roaster gland.
iii. An embryo respires but does not breathe.
iv. Circulations of blood in manual is known as double circulation.
v. You feel dizzy after a ride on the merry go round.

b) Give one difference between
i. Photolysis – phosphorylation(definition)
ii. Bicuspid- Tricuspid valve(position)
iii. Antigen-antibody
iv. Active-passive immunity
v. Graliar follicle- complementary function

Question 6
a) Study the diagram of the eye. (5)
i. Label parts 1, 2, 3, 4.
ii. Give the function of parts 6 and 10. iii. Name one genetic and one deficiency disease of the eye.
iv. What do you mean by accommodation of the eye? b)
i. Draw a well labelled diagram of the membranous labyrinth found in the inner ear.
ii. Give a suitable name for the following: the sensory cells that helps in hearing (A)
part responsible for static balance of the body (B)
the membrane covered opening that connects the middle ear to inner ear (C)
fluid present in the middle chamber of the cochlea (D)
structure that maintains dynamic equilibrium (E)

Question 7
a) Choose the odd one out and give a reason.
i. cortex, soil water, root hair.
ii. Intestine, liver, intestinal artery, hepatic vein, hepatic portal vein.
iii. Spinal cord, motor neuron, receptor effector, sensory neuron.
iv. Metaphase, telophase, prophase anaphase cytokines
v. Spongy cells, upper epidemics, stoma, palisade parenchyma, sun stomatal space.

b) Draw a neat labelled diagram of the sperm (2)
c) Answer the following question briefly.
i. Why is CO2 considered as a pollutant.
ii. Why is there a population explosion in India-2 reasons.
iii. Why was salvason drug banned