Coordination and Control Mcqs

This Set of Multiple choice questions and answers focuses on study of Coordination and Control in Biology. These questions are chosen from a collection of most authoritative and best reference books on Biology. Our aim is to prepare an individual for competitive exams like NTS, GAT, ECAT, MDCAT, Teaching jobs Tests and Medicine industry job interviews. One should practice our Mcqs to assimilate knowledge on Coordination and Control comprehensively.

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1.
Chlorosis, i.e., yellowish hue on the leaves results from

Accumulation of toxic waste products in leaves.

Deficiency of chlorophyll.

Short supplies of mineral nutrients in the soil.

All of these

2.
Chemically auxins are

Indole propionic acid.

Indole carboxylic acid.

Indole acetaldehyde

Indole acetic acid.

3.
Gibberellins may be substituted for _____ light, therefore promote flowering in long day plants.

White

Red

Blue

Green

4.
Which of the following is antagonist to Auxin in terms of promotion of stem growth?

Gibberellins

Cytokinins

Abscisic Acid

None of these.

5.
Abscisic acid promotes flowering in short day plants and inhibits in long day plants, which of the following is antagonistic to abscisic acid in terms of flowering:

Gibberellins

Cytokinins

Auxins

Ethene.

6.
The only promoter of leaf senescence in the following plant hormones is:

Gibberellins

Cytokinins

Auxins

Abscisic Acid

7.
Which of the following is used in brewing industry to promote malting:

Gibberellins

Cytokinins

Auxins

Abscisic Acid

8.
Which type of the receptors are present in the ear?

Chemoreceptors

Mechanoreceptors

Photoreceptors

Thermoreceptors

10.
Which of the following statement about neuron is incorrect?

They not only conduct impulses but also generate them.

They are not the only cellular component of nervous system.

They may show limited regenerative capabilities.

Like all the living cell, when they mature and divide to form similar cells.

11.
Type of neurons found exclusively in CNS are:

Sensory neurons

Motor neurons

Associative neurons

None of these.

12.
Maintenance of normal resting potential via movement of K+ inside the cell and na+ out is a/an _______ process.

Active

Passive

Diffusional

None of these.

14.
At the induction of action potential opening of Na+ gate with influx of Na+ is a _________ processes:

Active transport.

Passive transport.

Diffusion.

None of these.

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