Biology- Section II (Zoology) – Important Question Bank for Kerala HSE 2016 Examination

1. (a) Arrange the following terms into two based on the mode of biodiversity conservation. Hot spots, Zoological Park, Sacred groves, Wild life Safari Parks

( b.) Fill the blank box noted as A.

2. Transferring of Zygote/embryo with more than 8 blastomeres into fallopian tube is ………… ZIFT

3. Name the surgical methods of birth control, write the merit and demerit of the above methods.

4. (a) How many sperms and ova are produced from 50 primary spermatocyte and 50 primary oocyte respectively? (100 sperms and 100 eggs, 200 sperms and 100 ova, 200 sperms and 50 ova, 50 sperms and 50 ova)

(b) Observe the diagram carefully and identify a, b, c and d.

5. In a Biology class related to excretion in the human body; a student gave an opinion that in every minute about 2% of the total blood volume of the  body is convene d to GFR whereas only · l% of this GFH is eliminated as · urine. Evaluate this opinion and substantiate your answer.

6. Fill the table· appropriately.

7.  Arrange the following processes in nerve impulse conduction in a sequential order.

a) Bursting of synaptic vesicle

b) Development of action potential

c) Na+-k+ pump starts functioning

d) Stimulus received and influx of  Na+ ions

e) Binding of neurotransmitter with postsynaptic membrane

f) Maintenance of resting potential

8.(a) Name the microorganism which produce butyric acid.

(b) ‘Secondary treatment in sewage water treatment is called biological’. Justify

9.A.Carefully read the following symptoms and identify the genetic disorders.

a) Autosomal linked recessive trait where RBC become sickle shaped

b) Inborn error of metabolism, where phenyl alanine accumulates in blood.

c) Disorder due to absence of ‘X’ chromosome.

OR

B. Write the contribution of the following biologists in connection with genetics.

1) Henking 2) T.H. Morgan 3) Sutton and Boveri

10.( a) Pick out the acoelomate organism from . the following :

i) Roundworm

ii) Hook worm

iii) Filarial worm .

iv) Tapeworm

b) Name the phylum to which it belongs.

c) Mention its mode of nutrition.

d) What is the coelomic condition of other organisms? Substantiate your answer.

11. During a seashore visit, a student ‘collected two organisms. Observing the morphology, 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?

12. Write the gametes produced from self crossing of genotype RrYy.

13. Arrange the following primates in correct sequence of evolution to man.

a) Dryopethicus    b) Homo erectus     c) Homo habilis   d) Neanderthal man

14.  Carefully read the following statement and answer the questions. “A population remain constant and stable in its allele frequency from generation to generation. Such population shows genetic equilibrium”.

a) Name the underlying principle in the above statement.

b) Name any two factors which affect genetic equilibrium

15. (A.) Complete the table by using hints from brackets.

 (Haemophilus influenzae, Common cold, Salmonella typhi, Running nose & Nasal congestion, Pneumonia Ascariasis, Sustained fever 39 0C – 40 0C, Malaria)

OR

B. Categorise the following organs into two, with appropriate headings. Thymus, Spleen, Bone marrow, Peyer’s Patches

16. In AIDS, HIV attacks on (Helper-T cells, B-Lymphocytes, Monocytes, RBC)

17.  Read the following and select the correct statement/statements

a) 23 s RNA act as a enzyme in prokaryotes.

b) In prokaryotes DNA is monocistronic

c) Franscis Crick proposed the Central Dogma of Molecular biology

d) In Eukaryotes three types of RNA polymerases are present. (a only, a and b, a and c, a and d)

18.  Study the mRNA segment given below which is ready to be translated into a polypeptide chain and answer the following questions.

a) What is A and B denotes?

b) Write the triplet codon for A and B

19. Carefully read the statement given below and correct the digits in the brackets a and b, if it is wrong.

“In man, chromosome 1 has most genes (a) and the Y chromosome has the fewest (b)

(1968)                                                                           (231)

20. Write the functions of the following

a) 5-methyl Guanosine triphosphate (5m G PPP) 

b) DNA Ligase

Let’s try to make this a two way exercise. While we gather the question banks, you might have some inputs on this too! Please use the comments box below and post questions that you think are important from your analysis. It would help the HSC community a lot.

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