Kerala Plus One Zoology Board Model Paper 2022 with Answers

Teachers recommend solving Kerala Syllabus Plus One Zoology Previous Year Question Papers and Answers Pdf Board Model Paper 2022 to improve time management during exams.

Kerala Plus One Zoology Board Model Paper 2022 with Answers

I. Answer any three questions from 1 to 4. Each carries 1 score. (3 × 1 = 3)

Question 1.
In man, the first part of the small intestine is ‘C’ shaped and is called
Answer:
Duodenum

Question 2.
Hypersecretion ofGH : Gigantism ::
Hyposecretion of GH : _______
Answer:
Dwarfism

Question 3.
In a polysaccharide the individual mono-saccharide
are linked by _______
Answer:
Glycosidic bond

Peptide bond, disulphide bond, Glycosidic bond, diester bond

Question 4.
Carbon dioxide is carried by haemoglobin as
Answer:
Carbamino haemoglobin

II. Answer any nine questions from 5 to 17. Each carries 2 scores. (9 × 2 = 18)

Question 5.
a) Differentiate between heterodont dentition and thecodont dentition, b) Write down dental formula of man.
Answer:
a) fleterodont: Different types of teeth present in
ThecodonUlentition : Each tooth is embedded in a socket of jaw bone.
b) Dental formula of man

Question 6.
Observe the figure.

a) Name the parts labelled as A, B, C and D.
Answer:
A – Nerve cord
B – Notochord
C – Gill slits
D – Post anal tail

Question 7.
Complete the flow chart

Answer:
A – Central Nervous system
B – Autonomous Neural system
C – Mid Brain
D – Parasympathetic nervous system

Question 8.
Vassopressin is also called antidiuretic hormone. Justify.
Answer:
It helps in the reabsorption of water & electrolyte from the DCT of kidney and reduces diuresis (loss of water through urine).

Question 9.
Observe the figure.

a) Identify the tissues A, B and C.
b) Name the tissue in which intercalated disc is present.
Answer:
a) A. Skeletal Muscle
B. Smooth Muscle
C. Cardiac Muscle
b) Cardiac Muscle

Question 10.
Taxonomic aids and their explanations given in two columns, Match them correctly.
Answer:

Taxonomic aids	Explanation
Key	Have collection of preserved plant and animal specimens for study and reference.
Museum	Contain information on any one taxon
Zoological park	Taxonomic aid used for identification of plants and animals based on the similarities and dissimilarities.
Monograph	The places where wild animals are kept in protected environments under human care.

Answer:

Taxonomic aids	Explanation
Key	Taxonomic aid used for identification of plants and animals based on the similarities and difference.
Museum	Have a collection of preserved plant and animal specimen s for study and reference
Zoological park	The places where wild animals are kept in protected environments under human care.
Monograph	Contain information on any one taxon

Question 11.
Observe the figure

a) Identify the diagrammatic representation.
b) What does the QRS complex indicates?
Answer:
a) Electro Cardio Gram – ECG
b) QRS – indicates electrical depolarization of ventricles

Question 12.
Fill in the blanks using appropriate words given below.
Ommatidium, Respiration,
Answer:

A _____	Mosaic vision
Spiracle	B _____
Malpighian tubules	C _____
D _____	Grinding food particles

Answer:

A- Ommatidium	Mosaic vision
Spiracles	B-Respiration
Malpighian tubules	C-Excretory organ
D-Gizzard	Grinding food particles

Question 13.
Observe the figure

b) Write the function of organ of corti.
Answer:
a) A-Scala vestibule
B – Tectorial membrane
C – Scala intermedia
b) transduction of auditory signals or Recepter organ for hearing

Question 14.
List out the following as oviparous and viviparous
Corvus, Testudo, Canis, Felis
Answer:
Oviparous-Corvus and Testudo Viviparous – Canis and Felis

Question 15.
Compare the following
a) Adipose tissue and areolar tissue
b) Tendons and ligarfents
Answer:
(a)

Adipose Tissue	Areolar tissue
Seen beneath the skin	Seen beneath the skin
Stores fat	Support frame work for epithelial tissue, contain fibroblast, Macrophage and mast cells

(b)

Tendon	Ligament
Helps to connect muscles to the bone	Helps in bone to bone connection

Question 16.
With the help of an example, explain meta-genesis.
Answer:
Metagenesis is referred to the phenomenon of alternation of generation shown by cnidarians which exhibit both forms- polyps and medusae . Polyps produce medusae asexually and medusae form the polyps sexually e.g., Obelia.

Question 17.
Oxygen dissociation curve is given below.

Answer:
a) Oxyhaemoglobin forms in Lungs alveoli.
b)PO₂ becOmes low
PCO₂ becomes high

Answer any three questions from 18 to 22. Each carries 3 scoers. (3 × 3 = 9)

Question 18.
Observe the diagram

a) Identify the diagram.
b) Label the parts marked as A and B
c) What is glomerulus?
Answer:
a) Malpighian body
b) A-Afferent arteriole
B – Bowman’s capsule
c) Glomerulus -It is an tuft of capillaries formed by afferent arteriole found inside Bowman’s capsule.

Question 19.
a) Name three major categories of joints.
b) What do you mean by a joint?
c) Give an example for Ball and socket joint.
Answer:
a) Fibrous joints, Cartilaginous joints and Synovial joints
b) Joint – it is the point where two or more bones intersect each other.
c) Joint between pectoral girdle and humerus.

Question 20.
Observe the diagrams A and B

a) Name the symmetry exhibits by animals given in A and B.
b) Differentiate the symmetry of A with symmetry of B.
c) Write an example for animal showing asymmetry. U
Answer:
a) A-Radial symmetry
B- Bilateral symmetry

b) Radial symmetry: Body can be divided into 2 similar halves by any plane along central axis of body.
Bilateral symmetry: Body can be divided into 2 right and left halves through a single plane along the longitudinal axis.

c) Phylum Porifera -eg spongilla

Question 21.
a) Mention any three types of co-factors associated with enzyme.
b) Name the co-enzyme present in vitamin niacine.
c) What happens when co-factor is removed from an enzyme?
Answer:
a) Prosthetic group, Co-enzyme and Metal ions
b) NADP contain niacin
c) If a cofactor is removed from an enzyme it cant function as a catalyst.

Question 22.
Schematic plan of blood circulation of man is given below.

a) Name two circulatory pathways.
b) Explain its significance.
c) Comment on hepatic portal system.
Answer:
a) Pulmonary circulation and Systemic circulation.

b) Pulmonary circulation helps in the Oxygenation of blood and removal of CO₂ from blood occurs. Systemic circulation helps to provide nutrients, O₂ and other substances to the tissues and removes CO₂ and other harmful substances.

c) Hepatic portal system: The hepatic portal system is the venous system that returns blood from the digestive tract and spleen to the liver.