Kerala Plus One Zoology Model Question Paper 1
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 flowchart in the correct 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 : ……………..
Pick out the acoelomate organism from the folllowing.
- Filarial worm
Questions 4-14. Answers any 9 questions. Each question carries 2 score.
Identify the protein structures, (A) and (B) from the following figure.
Arrange the following words into two groups and give appropriate heading to each group.
Testes, oviduct, cloaca, Bidder’s canal, ova¬ries, urinogenital duct, vasa efferen-tia, cloaca.
You may have an experience of sudden withdrawal of body parts when you come in contact with objects that are extre-mely cold. This response occurs invol- untarily With out conscious efforts
a. Name the process behind this. [1/2]
b. Construct a flowchart showing the path way of impulses during this process.[1/2]
After diagnosing the blood of a foetus, a doctor comments that the foetus has some immunological diseases and it may be due to the malfunctioning of an endocrine gland.
a. Name the gland. [1/2]
b. Which are the hormones produced by this gland?
‘During the advengturous trip a plus one student got a skull and skeletal part of rare animal from the Chinnar forest.
Select the suitable location for keeping it from the list of taxonomic aids given below. (Herbarium, Museum, Zoological park, Botanical garden)
A schematic sketch representing the ali-mentary canal of a cockroach is given be¬low. Fill the boxes with the appropria-te organs from the list. No need to redraw the diagram.
Observe the diagram :
a. Lable the parts A and B 
b. Even though concentrated HCl is stored in the stomach, it will not generally damage the stomach wall. Why? 
Hormonal abnormality is responsible for certain diseases in main. List of some diseases are given below. Write the hormone related to eash of it.
(a) Diabetes mellitus
(c) Diabetes insipidus
Observe the following representation and fill up the blanks appropriately.
Name the phyla in which the following cells/ structures/organs are present
c. Pneumatic bone
d. Proboscis gland
Name the distinctive character (responsible for their names) of the following animal groups.
Questions 15 – 18. Answers any3 questions. Each question carries 3 scores.
Fill the table appropriately
Observe the molecule given below and answer the following questions.
a. Identify the molecule.
b. Label 1 and 2.
c. Mention any three structural details of the molecule shown in the diagram.
a. Identify this compound. [1/2]
b. Name the bond produced when another biomolecule of the same category combines with this. [1/2]
c. If a number of such molecules are bonded together, what will be the resultant molecule? [1/2]
During a seashore visit, a student collected two organisms. Observing the mor-phology, it is clear that the organisms are radially symmetrical. One of them shows bioluminescence.
a. To which phylum does this organism belong? 
b. Identify the possible phyla to which the other organism can be included. 
c. Which distinctive feature of this organism will help you to categorize it into a particular phylum? 
SA Node →AV Node → Atrial contraction →AV Bundles →Ventricle contraction
A – Protein secondary structure or Helical
B – Protein tertiary structure or 3D
b. Receptor → Sensory (afferent) neuron → Inter neuron → Motor neuron (efferent) neuron → Effector.
a. Thymus gland
a. Salivary gland
d. Hepatic caeca
e. Malpighian tubule
a. A-Cardiac stomach,
B – Pyloric stomach
b. Mucus layer in stomach and bicarbonate present in gastric juice protects stomach wall.
b. Growth hormone / GH / STH.
c. ADH / Vassopressin
d. Thyroxine / T4, T3
A – secondary metabolites
B – amino acids
C – pigments
b. Cnidaria / Coelenterata
c. Chordata / Aves – Birds
a. Cnidaria – Presence of Cnidoblast
b. Arthropoda – Joint footed animals
c. Porifera – Body contains pores
d. Annelida – Rings on body
e. Chordata – Notochord bearing animals
f. Ctenofora – Comb plates
a. Secretion of pancreatic enzyme and bile juice.
b. Juxtaglomerular cells of kidney
c. Atrial natriuretic factor
d. Thyroid gland
a. Structure of DNA
b. 1. Thymine
2. Hydrogen bond
c. Sugar phosphate back bone is present. Adenine pairs with thymine by 2 hydrogen bond. Guanine pairs with cytosine by 3 hydrogen bond.
a. Amino acid
b. Peptide bond
a. Phylum – Ctenophara
b. Phylum – Echinodermata