Teachers recommend solving Kerala Syllabus Plus One Zoology Previous Year Question Papers and Answers Pdf March 2019 to improve time management during exams.
Kerala Plus One Zoology Previous Year Question Paper March 2019
Answer all questions from question numbers 1 to 3. Each carry 1 score. (3 × 1 = 3)
Question 1.
Binomial nomenclature was proposed by
Answer:
Carolus Linneaus
Question 2.
Tendons and Ligaments are example of…… tissue
a) Areolar
b) Adipose
c) Dense regular
d) Dense irregular
Answer:
Dense regular
Question 3.
______ is the most abundant protein in the animal world.
Answer:
Collagen
Answer any nine questions from 4 to 14. Each carries two score. (9 × 2 = 18)
Question 4.
“All vertebrates are chordates but all chordates are not vertebrates”. Do you agree with this statement? Substantiate.
Answer:
Yes
The notochord is replaced by a cartilaginous or bony vertebral column in the adult.
Question 5.
Distinguish between:
a) Identify the organism
b) Name the calss in which it belongs
Answer:
a) Residual Volume (RV): Volume of air remaining in the lungs even after a forcible expiration. This averages 1100 mL to 1200 mL.
Tidal Volume (TV): Volume of air inspired or expired during a normal respiration. It isapprox. 500 mL
b) Vital Capacity (VC): The maximum volume of air a person can breathe in after a forced expiration.
Total Lung Capacity: Total volume of air accommodated in the lungs at the end of a forced inspiration.
Question 6.
Observe the figure of the organism given below
a) Identify the organism
b) Name the calas In which it belongs
c) Mention any two salient features fo the class
Answer:
a) Hippocampus
b) Osteichthyes
c) 1. They have four pairs of gills which are covered by an operculum on each side.
2. Air bladder is present which regulates buoyancy
Question 7.
a) Name the following:
i) The carbohydrate splitting enzyme preent in human saliva.
ii) The anti bacterial enzyme present in human saliva
Answer:
a) 1. Salivary amylase
2. Lysosyme
b) 1. Intestine
2. Stomach
b) In which region of the alimentary canal does the following reactions occur?
Question 8.
a) Person with ‘AB’ blood group is called ‘universal recepient’. Give a reason.
b) List out any two disorders of human criculatory system.
Answer:
a) Persons with ‘AB’ group can accept blood from persons with AB as well as the other groups of blood. Therefore, such persons are called ‘universal recipients’.
b) 1. High Blood Pressure (Hypertension): Hypertension is the term for blood pressure that is higher than normal (120/80).
2. Coronary Artery Disease (CAD): Coronary Artery Disease, often referred to as atherosclerosis, affects the vessels that supply blood to the heart muscle.
Question 9.
Complete the flowchart given below.
Answer:
a) Gnathostomata
b) Cyclostomata
C) Tetrapoda
d) Osteichthyes
Question 10.
a) Give one word for the following:
i) Presence of Glucose in Urine
ii) Presence of Ketone bodies in Urine
Answer:
a) 1.Glycosuria
2. Ketonuria
b) Diabetes mellitus
b) Which human disorder is having the above mentioned two symptoms?
Question 11.
Observe the figures given below.
a) Identify figure ‘A’ and ‘B’.
b) Name the subunits of ‘A’ and ‘B’
Answer:
a) 1. Actin
2. Myosin
b)
- Each actin,(thin) filament is made of two ‘F’ (filamentous) actins helically wound to each other. Each ‘F’ actin is a polymer of monomeric ‘G’ (Globular) actins.
- Myosin consists of monomeric proteins called Meromyosins.
- Each meromyosin has two important parts, a globular head with a short arm and a tail, the former being called the heavy merotnyosin (HMM) and the latter, the light meromyosin (LMM).
Question 12.
Note the relationship in the first pair and then complete the second pail
a) Insulin : Hypglycemic hormone :
_______ : Hyperglycemic hormone
b) Over secretion of Growth hormone : Gigantism
Low secretion of Growth hormone : _______
Answer:
a) glucagon
b) dwarfism
Question 13.
Observe the diagram A and B given below.
a) What is ‘A’ and ‘B’?
b) Mention the other two levels of protein structure.
Answer:
a) A- Secondary structure of protein
B- tertiary structure of proteins
b) primary structure of proteins and quarternary structure of proteins
Question 14.
Classify the following animals on the basis of the mode of nitrogenous waste excretion in the table given below.
Mammals, Birds, Bony fishes, Reptiles,
Terrestrial amphibians, Aquatic amphibians
Ammanotehc | Ureotehc | Uricotelic |
Answer:
Amonotelic | Ureotelic | Urecotehc |
Bony fishes | mammals | repti |
Aquatic amphibians | Terrestrial amphibians | Birds |
Answer any three questions from 15 to 18. Each carries three scores. (3 × 3 = 9)
Question 15.
Find the odd one from each group. Justify your answer.
a) Starfish, Devilfish, Dogfish, Jellyfish
b) Flying fish, Angel fish, Saw fish, Fighting fish
c) Sea lily, Sea cucumber, Sea hare, Sea urchin
Answer:
a) Dog fish-belongs to chordates while others are nonchordates
b) Saw fish-belongs to chodricthyes while others are osteichthyes
c) Sea hare-belongs to phylum mollusca while others are phylum Echinodermata
Question 16.
Prepare a flow chart showing the parts to human brain, by using the details given below.
Cerebrum, Medulla, Mid brain, Thalamus, Pons,
Corpora quadrigemina, Hypothalamus, Forebrain,
Cerebellu, Hypothalamus, Hind brain, Brain.
Answer:
Question 17.
Diagrammatic representation of a standard ECG is given below.
a) Exapnd ECG
b) What dows the ‘P’, T waves denote?
c) Mention the clinical significance of ECG.
Answer:
a) ECG – electrocardiogram
b) P wave – atrial depolarization
T wave- ventricular repolarisation
c) It helps in the diagnosis of heart diseases
Question 18.
Match column ‘A’ with those in columns ‘B’ and ‘C’.
A | B | C |
Type of simple Epithelum | Location | Function |
Squamous Epithelum | (a) ________ | Diffusion |
(b) ________ | Ducts of glands and tubular parts of nephrons in kidneys | (c) ________ |
Columnar Epithelium | (d) ________ | Secretion and Absorption |
(d) ________ | Inner suface of bronchioles and fallopian tubes | (e) ________ |
Answer:
a) found in the wall of blood vessels
b) cuboidal epithelium
c) secretion /absorption
d) lining of stomach or intestine
e) ciliated epithehum
f) movement/transport