Kerala Plus One Zoology Model Question Paper 3
Time : 1 Hours
Cool off time : 10 Minutes
Maximum : 30 Scores
General Instructions to candidates
- There is a ‘cool off time’ of 10 minutes each for Botany and Zoology in addition to the writing time of 1 hour each. Further there is a ‘ 5 minutes’ ‘preparatory time’ at the end of the Botany Examination and before the commencement of the Zoology Examination.
- Use the ‘cool off time’ to get familiar with the questions and to plan your answers.
- Read the instructions carefully.
- Read questions carefully before you answering.
- Calculations, figures and graphs should be shown in the answer sheet itself.
- Malayalam version of the questions is also provied.
- Give equations wherever necessary.
- Electronic devices except non programmable calculators are not allowed in the Examination Hall.
Questions 1-3. Answers all questions. Each question carries 1 score.
Rearrange the following in the correct taxo¬nomic hierarchical sequence :
Note the relationship between the first two words and suggest words for the fourth place.
Collection of living plants : Botanical garden.
Animals kept in protected environment : ……………….
After completing a project study based on diversity of spiders, the specimens were intended to be stored for future reference. Select a suitable taxonomical aid from the following for the preservation of specimens.
c. Zoological park
Justify your answer.
Questions 4-14. Answers any 9 questions. Each question carries 2 score.
Carbon dioxide transport in the form of bi-carbonate ion is picturized below. Observe the diagram and identify the enzyme not¬ed as “A”.
Categorize the following animals based on the nature of excretion of nitrogenous waste.
Mammals, Bony fishes, Birds, Aquatic am¬phibians, Terrestrial amphibians, Insects, Cartilage fishes, Aquatic insects.
Stethoscope is an instrument which is used to detect the sounds of the heart.
a. Mention the two sounds of the heart.
b. Give the causes of heart sound.
Find the odd one and write the function.
Neutrophil, Erythrocyte, Monocyte, Lymphocyte, Basophil, Eosinophil,
Observe the diagram carefully and Label the parts marked as A,B,C,D.
Obseve the given diagram and answer the following questions
a. Identify the duct labelled A and the secretion it pours into the doudenum.
b. Mention any one function of secretion in digestion.
The following diagram shows the characteristic features of a phylum.
a. Identify the phylum.
b. Mention four salient features of this phylum.
Observe the following figure.
a. Name the figure.
b. Label the parts A, B and D
Complete the given flowchart :
Like insulin and glucagon, PTH and calcitonin are antagonistic in their action inmaintaining normal blood calcium level. Substantiate this statement.
Fill in the blanks with suitable terms according to the indicators shown below: Indicators : a and b -food habit, cand d- Excretory organ.
a. Cockroach : ……………
b. Earthworm : ……………
c. Cockroach : ……………
d. Earthworm : ……………
Questions 15 – 18. Answers any3 questions. Each question carries 3 scores.
Complete the columns using the appropriate phylum, distinctive features and excretory organs.
Observe the figure given below and answer the questions.
a. Write the name of the figure.
b. Name the labelled part (A) and (B).
c. Which is the site of formation of ultrafiltrate?
The following diagram shows the characteristics of a phylum.
a. Identify the phylum.
b. Label A in the diagram.
c. Mention four salient features of the phylum.
Result of a project study related to the circulatory disorders to an area is given below.
a. What is your observation?
b. Name any one circulatory disorder and its characteristics.
c. Suggest two measures to avoid these disorders.
Sapiens → Homo → Hominidae → Primata → Mammalia → Chordata
a. Lubb, dupp
b. Lubb: Sound is heard when the closure of biscupid and triscupid valve takes place. Dupp sound is heard due to the closure of semilunar valve.
Erythrocyte. It helps in gas transport through blood.
A – Lens
B – Iris
C – Cornea
D – Optic nerve
a. Bile duct, bile.
b. Bile emulsifies fat.
a. Phylum Chordata
i. Notochord present
ii. Pharyngeal gills slits present
iii. Dorsal tubular nerve cord
iv. Heart is ventral
v. presence of post anal tail
a. Cross section of small intestine/gut.
b. A – Serosa, B – Muscularis, D – Mucosa
A – Mid brain
B – Thalamus,
C – Cerebellum
D – Medulla oblongata
Thyrocalcitonin secrected from the thyroid gland and parathyroid hormone secreted from the parathyroid gland involved in the regulation of blood calcium level. Thyrocalcitonin decrease the blood calcium level by decreasing the intestinal absorption of calcium but parathyroid hormone (PTH) increase the blood calcium level by enhancing intestinal absorption of calcium ions and decalcifiation of bones.
a. Cockroach – omnivore
b. Earthworm – Soil and decayed leaves
c. Malpighian tubule
a. Flat body
b. Flame cells
c. Jointed footed animals
b. A – Glomerulus,
B – Bowman’s capsule
c. Bowman’s capsule (Lumen)
a. Phylum Chordata
c. 1. Presence of notochord
2. Dorsal hollow nerve cord
3. Phasym seal gill slit
4. Post aral tail
a. 55% persons are affected with circulatory disorders.
b. 1.Hypertension: Patients body has very high blood pressure than normal.
2.Coronary artery disease: Affect blood vessels that supply blood to heart.
c. 1.Avoid fat containing food, smoking, drugs etc.
2.Do regular exercise.