Kerala SSLC Biology Model Question Papers with Answers Paper 1

Kerala SSLC Biology Model Question Papers with Answers Paper 1 are part of Kerala SSLC Biology Previous Year Question Papers with Answers. Here we have given Kerala SSLC Biology Model Question Papers with Answers Paper 1.

Kerala SSLC Biology Model Question Papers with Answers Paper 1 Free Download English Medium

Time Allowed: 1 1/2 Hours
Maximum Marks: 40

Instructions

1. first 15 minutes is given as cool ofttimc. This time is to bc used for reading and understanding the questions.
2. Answer only on the basis of instructions and questions given.
3. Consider score and time while answering.

Answer any five from questions 1 to 6. Each question carries 1 score. 5 x 1 = 5

Question 1:
Different organisms and sense organs are given in pairs. Select the correct pair
a. House fly            –            Eye spot
b. Shark                  –             Lateral Line
c. Snake                  –             Omntidia

Question 2:
Make word pairs from the words given in the box a scientist – concept of evolution.

Question 3:
Select the correct statements regarding cerebrum.
a. Centre of thought. intelligence, memory and imagination
b. Maintains equiLibrium of the body.
c. Sensations.
d. Maintenance of homoeostasis

Question 4:
Correct the word underlined in the given st.atemcnts if there is any mistake.
a. The different forms of a gene are called autosomes.
b. The sugar seen in RNA is ribose.
e. The RNA that carries amino acids to ribosome is called mRNA.

Question 5:
Complete the illustration using the words given in the box.

Question 6:
Identify the correct statement.
a. Non functional genes are called vectors
b. The sum of the genetic material present in an organism is called its genome.
c. The technology used to identify the location of a gene is called gene therapy.

Answer any 6 questions from Qn. No.7 to 13. Each question carry 2 score. 6 x 2 = 12

Question 7:
Some symoptoms of a disease are given
Loss of memory
Inability to recognize friends and relatives
a. Identify the disease
b. What is the cuse of this disease?

Question 8:
Fill the blanks in the illustration suitably.

Question 9:
A perosn severely injured in an accident needs blood. Antigen A is detected in his blood on blood test.
a. Identify the blood group of this person
b. From the following persons, whose blood can be received by him.
(i) X-A group
(ii) Y-B group
(iii) Z- AB group

Question 10:
First generation raised from the hybridisation experiment of Mendel is given. Write the gametes formed from this generation.

Question 11:
Classify the given defense mechanisms as primary level defense and secondary level defense
a. Mucus in the respiratory tract.
b. Inflammatory response
c. Phagocytosis.
d. Hydrochloric acid in the stomatch

Question 12:
Observe the figure

a. Which disease is indicated by the structural chage of RBC?
b. Explain the cause of this disease.

Question 13:
a. Steps of the genetic engineering process through which new gene become the part of genetic constitution of larget cell are given in disorder form. Write them in correct sequence.

b. Name the genetic glue used to join the new gene to the bacterial DNA.

Answer any 5 Questions from Qn.No. 14 to 20. Each Question carries 3 score. 5 x 3 = 15

Question 14:
Rearrange columns B and C according to the column A.

Question 15:
Analyse the graph and answer the following questions.

a. Name the pathogen of disease that mostly affected.
b. Name the vector of the diseases shown in the graph
e. What measure to be adopted to prevent the spreading of these diseases.

Question 16:
a. Edentify the illustration given below:

b. Which nitrogen base, pairs with Thymine.
c. Name the nitrogen base and sugar seen only in RNA.

Question 17:
Arrange the main concepts related to organic evolution correct order.

Question 18:
Analyse the information given in boxes A and B. Make pairs of major components of vaccine preventable disease.

Question 19:
Give reason for the following:
a. Persons with colour blindness cannot distiguish Red and Green colour.
b. Deficiency of vitamin A causes nightblindness
c. Maximum visual clarity is there in yellow spot.

Question 20:
Differences in the amino acid of the beta chain a particular molecule in man compared to other organisms are given in the table.
questions.
Analyse the table and answer the question

a. Which molecule was studied here?
b. Why amino acids vary in this molecule?
c. What is the inference drawn from this duty?

Answer any 2 Questions from Q.No. 21 to 23. Each question carries 4 score. 2 x 4 = 8

Question 21:
Analyse the indicators.
Name the parts of ear indicated and write the functions they perform,
a. The tube that connects middle ear and pharynx.
b. Coiled tube, like a snail shell.
e. The membrane that separates Exteral ear from the middle ear.
d. The nerve that begins from the cohlea

Question 22:
Observe the illustration showing the maintenance calcium level in blood and answer the following questions.

a. Name the hormones A and D.
b. Name the glands C and B
c. How A and D maintain the level of calcium in blood.

Question 23:
Re draw the diagram of cross section of the spinal cord. Name and label the following parts.

a. Part through which the sensory impulses reach the spinal cord.
b. Part throguh which the motor impulses go out of the spinal cord.
c. Part tilled with cerebro spinal fluid.

Answers

Answer 1:
b. Shark – lateraline

Answer 2:
Darwin – Natural selection
Devrics – Mutation

Answer 3:
a. Centre of thought, intelligence, memory and imagination
c. Sensation

Answer 4:
a. alleles
c. tRNA

Answer 5:
A – Acromegaly
B – Gigantisrn

Answer 6:
b. The sum of genetic material present in an organism is called its genome.

Answer 7:
a. Alzhimers diseases
b. Accumulation of an insoluble protein in the nervous tissue of brain and destruction of neurons.

Answer 8:
a. Bacteria
b. Mosaic
c. Fungus
d. Coconut tree

Answer 9:
a. A group
b. A group

Answer 10:

Answer 11:
a. Primary level defence
b. Secondary level defence
c. Secondary level defence
d. Primary level defence

Answer 12:
a. Sickle cell anaemia
b. Defect in the sequence of aminoacic
haemoglobin – Genetic defect.

Answer 13:

Answer 14:

Answer 15:
a. Dengue virus
b. Mosquito
c. Don’t allow water to be stagnent
Keep surrounding clean

Answer 16:
a. DNA nucleotide
b. Adenin
c. Uracil, Ribose sugar

Answer 17:
d. Chemical evolution
a. Formation of organic compounds
e. Prokaryotic cells
b. Eukaryotic cells
f Colonies of eukaryotic cells
c. Multicellular organisms

Answer 18:

Answer 19:
a. Their retina lack cone cells that can identify red and green colour.
b. Vitamin A deficiency cause retinal deficiency and thereby rodhopsin deficiency this result in nightblindness.
c. More photoreceptors are seen in yellow spot.

Answer 20:
a. Haernoglobin 1 protein
b. Mutation of genes that determine the aminiacid sequence of protein/ Hb.
c. Shows branching of organisms from a common ancestor through evolution Man and chimpancy are closely related.

Answer 21:
a. Eustachean tube : Protect the tympanum by balancing the air pressure on its either side.
b. Cochlea – Helps in hearing
c. Tympanum – causes vibration in accordance with sound waves.
d. Auditory nerve – carry impulses from cochlea to cerebrum.

Answer 22:
a. A – Prathonnone D – Calcitonin
b. C – Thymid B – Parathyroid
c. A – Prathormone- Reabsorb Ca from kidney prevent accumulation of Ca in bones.
D – Calcitonin – Stores excess blood Ca in bones. Prcvent the mixing of Ca from bones to blood.

Answer 23:

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