TNPSC Group I Exam-Previous Year Question Paper-Subject wise Analysed Questions-Science-Part 18

TNPSC Group I Exam-Previous Year Question Paper-Subject wise Analysed Questions-Science-Part 18

426.    The male filament of Oedogonium is known as

A)        Gynandrium

B)        Nannandrium

C)        Micrandrium

D)        Megandrium

Answer: (B)

427.    Guard cells in the stomata help in

A)        transpiration

B)        respiration

C)        photosynthesis

D)        All of these

Answer: (A)

428.    Syngenesis means union of

A)        Anthers

B)        Stamens

C)        Filaments

D)        Androecium and Gynoecium

Answer: (C)

429.    Identify the correct sequence of protein synthesis

A)        Polyribosomes - Amino acid +rRNA -

Polypepride - Messenger RNA

B)        Polypeptide - Polyribosomes - Messenger RNA-

Amino acid  + tRNA

C)        Messenger RNA - Polyribosomes - Amino acid +

tRNA - Polypeptide

D)        Messenger RNA - Amino acid + tRNA - Polypeptide

            - Polyribosomes

Answer: (B)

430.    The study of individual plant throughout their life-history in relation

to the environment is called

A)        Auteology                  B)        Synecology

C)        Biology                       D)        Life - cycle

Answer: (B)

431.    Which one is correctly matched?

A)        Papain           -  Tobacco

B)        Jute                -  Pholem fibre

C)        Nicotin           -  Tea

D)        Thein              -  Papaya

Answer: (B)

432.    Fern prothallus is a

A)        Gametophyte

B)        Sporophyte

C)        Vegetative body

D)        None of these

Answer: (A)

433.    The normal cholesterol level in human blood is

A)        80 - 120 mg%

B)        120 - 140 mg%

C)        180 - 200 mg%

D)        220 - 240 mg%

Answer: (B)

434.    Identical twins result

A)        from the early division of a single zygote

B)        from two different fertilized eggs

C)        from an egg fertilized by 2 spermatozoa

D)        from simultaneous fertilization of several eggs

Answer: (A)

435.    Electron microscopy is advantageous because

A)        much grater resolution is possible

B)        electrons are used as a source of radiation

C)        transmission and scanning types are available

D)        all the above mentioned features are combined

Answer: (A)

436.    Consider the following statements:

Assertion (A) : Pasteurisation is a process of sterilization for killing  the pathogens in a liquid food

Reason (R)  :  It is done by cooling at a very low temperature

Selection the answer from  the coding scheme given below:

A) Both (A) and (R) are true and (R) is the correct explanation of (A)

B)  Both (A) and (R) are true but (R) is not the correct explanation of (A)

C) (A) is true, but (R) is false

D)   Both (A) false, but (R) are true

Answer: (C)

437.    Consider the statements:

            The ants make their path on a definite direction in a perfect manner.

            It is due to

            I.          The sense of touch

            II.         The sense of smell

            III.        The sense of vision

            IV.       The sense of intelligence

            Of the statements:

            A)        I alone is correct

            B)        II alone is correct

            C)        I, II and III are correct

            D)        All are correct

Answer: (B)

438.    Organism that lives at the air-water interfaces is called

A)        Benthos                                 B)        Nekton

C)        Neuston                                 D)        Plankton

Answer: (D)

439.    Match List - I with List - II and select your answer using the codes

            given below:

                        List - I                                           List - II

a)         Tse Tse fly                             1)  Yellow fever

b)         Aedes mosquito                   2)  Sleeping sickness

c)         Water snail                            3)  Billarzia

d)         Sand flies                              4)  Kala - azar

Codes :

            a          b          c          d

A)        1          2          4          3

B)        3          1          4          2

C)        2          3          1          4

D)        4          2          3          1

Answer: (C)

440.    Which of the following human fossils was found in India?

A)        Homobengalensis

B)        Australopithecus

C)        Ramapithecus

D)        Homohabilis

Answer: (C)

441.    The most primitive mollusca is

A)        Chiton                         B)        Neopilina

C)        Patella                        D)        Unio

Answer: (B)

442.    The four major poisonous snakes of India are

A)        Cobra, Russell’s viper, Krait and Rat snake

B)        King Cobra, Sea snake, Cobra and Saw - scaled viper

C)        Saw - scaled viper, Russell’s viper, Krait and Cobra

D)        Banded Krait, Python, Cobra and Pil viper

Answer: (B)

443.    Make the correct statement

A)        Mammals have mammary glands, hairs, pinna, nails

B)        Mammals have mammary glands, pinna, pectan, hairs

C)        Mammals have mammary glands, pinna, hairs, diaphragm

D)        Mammals have mammary glands, teeth, pinna, sinus venosus

Answer: (A)

444.    Plasmodium vivax causes

A)        Quartan fever

B)        Benigh fever

C)        Malignant malaria

D)        Mild malaria

Answer: (C)

445.    Which are the two bones that participate in the ball and socket

            joint of the for elimb in man

A)        Clavicle and Scapula

B)        Ulna and Clavicle

C)        Humerus and Scapula

D)        Humerus and Clavicle

Answer: (B)

446.    Mark the correct statement

A)        The central cavity of Hydra is centrocoel

B)        The central cavity of Hydra is gastrocoel

C)        The central cavity of Hydra is coelenteron

D)        The central cavity of Hydra is gastro vascular cavity

Answer: (D)

447.    Match List - I with List - II and select your answer using the codes

            given below:

                        List - I                                      List - II

a)         Vegetable pole         1) Cell of Blastula

b)         Blastomere                2) Development without fertilization

c)         Parthenogenesis       3) Echinoderm egg

d)         Janus green               4) Yolk

Codes :

            a          b          c          d

A)        1          2          3          3

B)        2          3          1          4

C)        2          3          4          1

D)        3          2          1          4

Answer: (C)