In the insects compound eyes are formed of:

1.  Ocelli

2.  Ommatidia

3.  Eye spots

4.  Haematochrome

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4
Correct Answer :

Ommatidia


Explanation :
No Explanation available for this question

Organisms that fix nitrogen in aquatic habitats are:

1.  Green algae

2.  Cyanobacteria

3.  Brown algae

4.  Protozoa

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4
Correct Answer :

Cyanobacteria


Explanation :
No Explanation available for this question

‘Grey-Speck’ disease is caused by the deficiency of:

1.  Molybdenum

2.  Zinc

3.  Manganese

4.  boron

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4
Correct Answer :

Manganese


Explanation :
No Explanation available for this question

Drones in the colony of honey bee are produced by:

1.  Parthenogenesis

2.  Parthenocarpy

3.  Zygote

4.  None of above

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4
Correct Answer :

Parthenogenesis


Explanation :
No Explanation available for this question

The need of individual plants for any particular element is normally defined in terms of:

1.  Critical period

2.  Critical condition

3.  Critical concentration

4.  None of the above

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4
Correct Answer :

Critical concentration


Explanation :
No Explanation available for this question

The male cricket produces a chirping sound with the help of its:

1.  vocal cords

2.  pharynx

3.  legs

4.  wings

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4
Correct Answer :

legs


Explanation :
No Explanation available for this question

Locusts are closely related to:

1.  moth

2.  beetles

3.  butterflies

4.  grasshopper

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4
Correct Answer :

grasshopper


Explanation :
No Explanation available for this question

Permeability of protoplasm is accelerated by:

1.  Na

2.  K

3.  Ca

4.  P

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4
Correct Answer :

K


Explanation :
No Explanation available for this question

The larvae of sacculina are known as:

1.  Tornaria

2.  Nauplius

3.  Trochophore

4.  Veliger

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4
Correct Answer :

Nauplius


Explanation :
No Explanation available for this question

Block necrosis of stem root tip is caused by the deficiency of:

1.  Magnesium

2.  Chlorine

3.  Copper

4.  Boron

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4
Correct Answer :

Boron


Explanation :
No Explanation available for this question
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