Subject

Biology

Class

NEET Class 12

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 Multiple Choice QuestionsMultiple Choice Questions

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41.

The marine organism showing spinning movements and responsible for killing fishes by producing toxins belong to the following kingdom in Whittaker's classification.

  • Monera

  • Protista

  • Fungi

  • Animalia


B.

Protista

Protists are dinoflagellates, show spinning movement and responsible for killing fishes by producing toxins. The most common dinoflagellate toxin is saxitoxin, which acts on nervous system. Dinoflagellates are responsible for red tides also.


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42.

Study the following Columns

Column I Column II
A. Takhtajan 1. Five Kingdom classification
B. Linnaeus 2. Phylogenetic classification
C. Warming 3. Artificial classification
D. Carl Woese

4. Classification of communities based on relation of water

5. Six kingdom classification

The correct match is

  • A - 2; B - 3; C - 4; D - 5

  • A - 4; B - 1; C - 5; D - 3

  • A - 5; B - 2; C - 1; D -4

  • A - 5; B - 4; C - 2; D -3


43.

Identity the family belonging to the order Sapindales.

  • Poaceae

  • Anacardiaceae

  • Solanaceae

  • Convolvulaceae


44.

Study the following Columns.

Column I Column II
A. Solitary cyme 1. Solanum
B. Monochasical cyme 2. Ipomea
C. Cymule  3. Datura
D. Polychasial cyme 

4. Jasmine

5. Nerium

The correct match is

  • A - 3; B - 4; C - 5; D - 2

  • A - 3; B - 1; C - 4; D - 5

  • A - 1; B - 3; C - 5; D - 4

  • A - 3; B - 1; C - 5; D - 2


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45.

Ratio between number of stamens in nine male flowers and number of carpels in three female flowers in Euphorbia is

  • 1 : 1

  • 1 : 3

  • 2 : 1

  • 2 : 3


46.

Identify the character which is absent in Fucus.

  • Hetrogametes

  • Oogamy

  • Non-flagellated male gamates

  • Holdfast


47.

Select the option for correct pairing of nitrogenous bases in dsDNA.

  • (Py)Adenine  = (Pu)Cytosine :: (Pu)Guanine = (Pu)Thiamine

  • (Pu)Adenine  Thiamine(Py) ::  (Py)Cytosine = (Py)Guanine

  • (Py)Adenine  (Pu)Thiamine :: (Py)Cytosine  (Pu)Guanine

  • Adenine(Pu) = Thiamine(Py) :: Guanine(Pu)  Cytosine(Py)


48.

The number of taxa present in a particular area of an ecosystem is

  • α- diversity

  • β- diversity

  • γ- diversity

  • δ- diversity


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49.

Study the following statements.

I. F1 -progeny is the first hybrid generation and progeny resembles either of the two
parents.

II. F2 progeny is a resultant hybrid generation of cross pollination among F1 progeny and progeny shows retain as such both drawf and tall plants.

III. Fprogeny is second hybrid generation, produced by selfing F1 hybrids and progeny contained both drawf and tall plants.

IV. The proportion of probability of plants that were drawf were 1/4th of the F2 plants while 3/4th of the F2 plants were tall.

The correct statements are

  • I, II, III, IV

  • I, III, IV

  • I, II, IV

  • III, IV


50.

The translation unit is represented by the following diagram. Select the correct answer based on this

  • Promoter/ Terminater/ Coding strand/ Structural gene

  • Promoter/ Coding strand/ Terminator/ Structural gene

  • Terminater/ Coding strand/ Structural gene/ Promoter

  • Promoter/ Structural gene/ Coding strand/ Terminator


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