Plus One Zoology Improvement Question Paper Say 2018

Kerala Plus One Zoology Improvement Question Paper Say 2018 with Answers

Time: 1 Hour
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 provided.
• Give equations wherever necessary.
• Electronic devices except non-programmable calculators are not allowed in the Examination Hall.

Answer all questions from question numbers 1 to 3. Each carry 1 score. (3 × 1 = 3)

Question 1.
Which among the following represents the CORRECT sequence?
a) Kingdom ← Phylum ← Class ← Family ← order ← Genus ← Species
b) Phylum ← Class ← Kingdom ← Order ← Family ← Species ← Genus
c) Kingdom ← Phylum ← Class ← Order ← Family ← Genus ← Species
d) Kingdom ← Phylum ← Class ← Family ← Genus ← Order ← Species
Answer:
c) Kingdom → Phylum → Class → Order → Family → Genus → Species

Question 2.
Plasma without clotting factor is called ……….
Answer:
Serum

Question 3.
Note the relation in the first pair and then complete the second pair.
fasciola : Liver fluke
Taenia : …………..?…………..
Answer:
Tapeworm

Answer any 9 questions from 4 to 14. Each carries two scores. (9 × 2 = 18)

Question 4.
Expand the following hormones:
a) TSH
b) ACTH
c) ANF
d) FSH
Answer:
a) TSH – Thyroid stimulating hormone
b) ACTH – Adrenocorticotrophic hormone
c) ANF – Atri-natriuretic factor
d) FSH – Follicle stimulating hormone

Question 5.
Observe the diagrams given below:

a) Identify the tissue A and B.
b) Name the specialized cells present in A and B
Answer:
a) A – cartilage B – bone
b) A – chondrocytes B – osteocytes

Question 6.
Given one word for the following.
a) Presence of 2 sets of teeth in the lifetime.
b) Teeth are present in socket of Jaw bone.
Answer:
a) Diphyodont
b) Thecodont

Question 7.
Classify the following terms under two suitable headings.
Neutrophils, Monocytes, Eosinophils, Lymphocytes
Answer:

• Granulocytes – Neutrophils, Eosinophils
• Agranulocytes – Monocytes, Lymphocytes

Question 8.
Find the odd one out. Justify your answer.
Saw fish, Jelly fish, Flying fish, Angel fish, Dog fish
Answer:

• Jelly fish, it is not a fish.
• It comes under phylum cnidaria.

Question 9.
a) Identify the graph given below:

b) List the factors responsible for the formation and dissociation of oxyhemoglobin.
Answer:
a) Oxygen dissociation curve
b) pO₂, pCO₂, H⁺ concentration and temperature

Question 10.
Some conditions related to kidney disease are given.

• Accumulation of urea in blood
• Malfunction of kidney

a) Name the condition
b) In your opinion, suggest the treatments for kidney failure and acute kidney failure.
Answer:
a) Uremia
b) Kidney failure – dialysis

• Acute kidney failure-kidney transplantation

Question 11.
Identify the disorders based on the symptoms given below.
a) Inflammation of joints.
b) Decreased bone mass and increased change of fracture
c) Inflammation of joints due to the accumulation of uric acid crystals
d) Rapid spasms in muscles due to low Ca⁺⁺ in body fluids
Answer:
a) Arthritis
b) osteoporosis
c) gout
d) tetany

Question 12.
Name the certain animals are given below. Write the phylum of each animal
a) Pila
b) Pleurobrachia
c) Nereis
d) Balanoglossus
Answer:
a) Pila – Mollusca
b) Pleurobranchia – Ctenophora
c) Nereis – Annelida
d) Balanoglossus – hemichordate

Question 13.
Select the WRONG statement regarding muscles from those given below and correct it.
a) Each muscle fibre is lined by the plasma membrane called sarcolemma.
b) The light bands are called ‘A’ band or Anisotropic band.
c) The portion of the myofibril between two successive ‘Z’ lines is called a sarcomere.
d) Muscle contains a red coloured oxygen storing pigment is called myoglobin.
Answer:
b) The light bands are called I band or isotropic band

Question 14.
a) Among the following body parts squamous epithelium is found in …………..
i) the ducts of glands and tubular parts of nephron
ii) the lining of stomach and intestine
iii) the inner walls of blood vessels and air sacs of lungs
iv) the inner surface of bronchioles and fallopian tubes.
b) Write any one function of compound epithelium.
Answer:
a) iii, walls of blood vessels and air sacs of lungs
b) cover the dry surface of the skin

Answer any 3 questions from question numbers 15 to 18. Each carries 3 scores. (3 × 3 = 9)

Question 15.
Observe the graph given below

a) Identify the graph
b) Mention the role of enzyme in this process
Answer:
a) concept of activation energy
b) decreases the activation energy of the reaction

Question 16.
Complete the flow chart given below

Answer:
a) spinal cord
b) midbrain
c) corpora quadrigemina
d) thalamus
e) pons
f) medulla oblongata

Question 17.
Observe the diagram showing the characteristics of a phylum.

a) Identify the phylum
b) Name the part labelled ‘A’.
c) Point out the three fundamental characters of the phylum.
Answer:
a) chordate
b) nerve cord
c)

• presence of hollow nerve cord.
• presence of paired pharyngeal gill slits.
• Pharynx perforated by gill slits.

Question 18.
Complete the table given below by using appropriate terms.

Answer:
a) increases blood sugar
b) thymus
c) melatonin
d) stimulate the contraction of smooth muscles
e) parathyroid
f) regulates blood calcium level.

Plus One Zoology Previous Year Question Papers and Answers