Competition in "PCB MCQ Series"

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Zoology: Frog 1

1)       With respect to blood, urine of frog is always

            a) hypotenic                            b) isotonic

            c) hypertonic                           d) depends upon environment

2)       Which of the following is present in frog:

            a) Brunner's gland                               b) Payer's patches

            c) Oxyntic cells                                   d) both a and c

 

3)       Lower jaw of frog has

            a) One row of teeth                             b) 2 vomers

            b) 3 vomers                                         d) None

4)       Brachium is

            a) part of brain                                    b) part of heart

            c) part of skull                         d) part of fore limb

  

5)       In frog, breeding occurs when

            a) Season is dry                       b) it rains heavily

            c) Photoperiod is appropriate  d) Any time during year

Answers:

1. a

2. c

3. d

4. d

5. b

 

Chemistry: Atomic structure 1

1.      The maximum sum of the no. of neutrons & protons in an isotope of hydrogen is

         a) 6                                b) 5                               c) 4                                d) 3

2.    An electron jumps from lower orbit to higher orbit, when

         a) energy is released  

         b) there is no charge in energy

         c) energy is absorbed                                       

         d) it radiates energy 

3.    Penetration power of proton is

         a) greater than e          b) less than e               c) greater than n          d) none 

4.    The two electrons occupying the same orbital are distinguished by

         a) principal quantum number                           b) azimuthal quantum no.

         c) magnetic quantum no.                                 d) spin quantum no.

  

5.    There is no difference between a 2p and 3p orbital regarding

         a) shape                       b) size                           c) energy                      d) vale of n

  

Answers:

1. d

2. c

3. a

4. d

5. a

Botany: Plant Anatomy 1

1.     The vascular bundle is scattered in                                                        

        a) corn plant            b) sun flower              c) cucurbita           d) mustard

2.     The living cells providing tensile strength are

        a) parenchyma                                            b) collenchyma

        c) Sclerenchyma                                         d) Sclerotic cells

 

3.  Velamen tissue is present in

        a) hydrophytes                                             b) xerophytes

        c) epiphytes                                                  d) mesophytes

4.     Which of the following lacks collenchyma?

        a) Dicots                                                        b) monocots

        c) cecurbit dicots                                          d) all of these

 

5.  Band like suberin and lighin thickenings can be traced in

        a) endodermis                                             b) hypodermis

        c) ectodermis                                               d) cortex

Answers:

1. a

2. b

3. c

4. b

5. a

Zoology: Respiratory System 1

1. In anaerobic respiration of muscles, pyruvic acid is changed to
(a) Alcohol
(b) Acetaldehyde
(c) Acetyl CoA
(d) Lactic acid

2. In which of the following animals, respiration occurs without any respiratory organ
(a) Fish
(b) Frog
(c) Cockroach
(d) Earthworm

3. The mode of respiration of rabbit is:
(a) Cutaneous
(b) Mucosal
(c) Tracheal
(d) Pulmonary 

4. Larynx is found in
(a) Both frog and rabbit
(b) Neither frog nor rabbit
(c) Frog but not in rabbit
(d) Rabbit but not in frog

5. Respiration rate is the lowest during
(a) Running
(b) Playing
(c) Eating
(d) Sleeping

Answers:
1. d
2. d
3. d
4. a
5. d