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:
1.Gibberellins
2.Cytokinins
3.Auxins
4.Ethene.
Posted Date:-2021-09-09 04:06:22
All of the follwing are blood clots except
1.Thrombus
2.Embolus
3.Atheroma
4.Hematoma
Posted Date:-2021-09-09 04:06:22
Any change in the environment of an organism is called
1.Stimulus
2.Variation
3.Response
4.Reaction
Posted Date:-2021-09-09 04:06:22
At the induction of action potential opening of Na+ gate with influx of Na+ is a _________ processes:
1.Active transport.
2.Passive transport.
3.Diffusion
4.none of these.
Posted Date:-2021-09-09 04:06:22
Cell membrane under resting conditions is impermeable to all the ions except
1.Na+
2.K+
3.Cl-
4.PO4-2
Posted Date:-2021-09-09 04:06:22
Central nervous system of man consists of
1.Brain
2.Spinal cord
3.Both of these
4.none of these.
Posted Date:-2021-09-09 04:06:22
Chemically auxins are
1.Indole propionic acid.
2.Indole carboxylic acid.
3.Indole acetaldehyde
4.Indole acetic acid.
Posted Date:-2021-09-09 04:06:22
Chlorosis, i.e., yellowish hue on the leaves results from
1.Accumulation of toxic waste products in leaves.
2.Deficiency of chlorophyll.
3.Short supplies of mineral nutrients in the soil.
4.All of these
Posted Date:-2021-09-09 04:06:22
Co-ordination in man is brought about by
1.Nervous system
2.Endocrine system
3.Both of these
4.none of these.
Posted Date:-2021-09-09 04:06:22
Co-ordination results in
1.Regulation of body functions
2.Organization of body functions
3.Integration of body functions
4.All of these
Posted Date:-2021-09-09 04:06:22
Gibberellins may be substituted for _____ light, therefore promote flowering in long day plants.
1.White
2.Red
3.Blue
4.Green
Posted Date:-2021-09-09 04:06:22
Hydra has
1.Brain
2.Nerves
3.Neuron-cells
4.All of these
Posted Date:-2021-09-09 04:06:22
In which of the following neurons length of dendrite is greater than axon?
1.Sensory neuron
2.Motor neuron
3.Associative neuron
4.none of these.
Posted Date:-2021-09-09 04:06:22
Intelligence is under the control of
1.Cerebrum
2.Cerebellum
3.Thalamus
4.Hypothalamus
Posted Date:-2021-09-09 04:06:22
Introduction of vaccine within the body to produce immunity is an example of
1.Artificially induced active immunity
2.Naturally induced active immunity
3.Artificially induced passive immunity
4.Naturally induced passive immunity
Posted Date:-2021-09-09 04:06:22
It is the discharge of blood from blood vessels.
1.Myocardial infarction
2.Cerebral infarction
3.Cerebral Hemorrhage
4.Thromboembolism
Posted Date:-2021-09-09 04:06:22
It is the measure of force with which blood pushes up against the walls of blood vessels.
1.Stroke volume
2.Cardiac output
3.Blood pressure
4.Blood flow
Posted Date:-2021-09-09 04:06:22
Maintenance of normal resting potential via movement of K+ inside the cell and na+ out is a/an _______ process.
1.Active
2.Passive
3.Diffusional
4.None of these.
Posted Date:-2021-09-09 04:06:22
Maximum speed of nerve impulse transmission is
1.100 m/sec
2.110 m/sec
3.120m/sec
4.130 m/sec.
Posted Date:-2021-09-09 04:06:22
Microscopic gaps between the neuron endings are called
1.Transmitters
2.Synapses
3.Pores
4.Nodes
Posted Date:-2021-09-09 04:06:22
Na+ -K+ ATPase pump is important for:
1.Maintenance of resting potential.
2.Massive out flux of K+ after depolarization.
3.Recovery of resting potential.
4.Conversion of resting potential into action potential.
Posted Date:-2021-09-09 04:06:22
Normal action potential of a neuronal cell is :
1.plus 50 mv
2.plus 60 mv
3.plus 70 mv
4.plus 80 mv
Posted Date:-2021-09-09 04:06:22
Normal resting membrane potential of a neuron is
1.? 50 mv
2.? 60 mv
3.? 70 mv
4.? 80 mv
Posted Date:-2021-09-09 04:06:22
Reflex actions below the neck are under control of
1.Brain
2.Spinal cord
3.Hypothalamus
4.none of these.
Posted Date:-2021-09-09 04:06:22
The flow of lymph is maintained by
1.Movement of viscera
2.Breathing movements
3.Valves
4.All of these
Posted Date:-2021-09-09 04:06:22
The only promoter of leaf senescence in the following plant hormones is:
1.Gibberellins
2.Cytokinins
3.Auxins
4.Abscisic Acid
Posted Date:-2021-09-09 04:06:22
Type of neurons found exclusively in CNS are:
1.Sensory neurons
2.Motor neurons
3.Associative neurons
4.None of these.
Posted Date:-2021-09-09 04:06:22
Type of sensations carried by nociceptors are:
1.Touch
2.Temperature
3.Pressure.
4.Pain
Posted Date:-2021-09-09 04:06:22
Under resting membrane potentials
1.Outer surface of neuron is more positive
2.Inner surface of neuron is more positive
3.Both of these surfaces are equally positive
4.none of these.
Posted Date:-2021-09-09 04:06:22
What is the function of synapse?
1.To allow nerve impulse to move in backward direction
2.To decrease the speed of nerve impulse
3.To stop the nerve impulse
4.To provide cytoplasmic connection between neurons.
Posted Date:-2021-09-09 04:06:22
Which of the following acts as thermoregulator?
1.Cerebrum
2.Cerebellum
3.Thalamus
4.Hypothalamus
Posted Date:-2021-09-09 04:06:22
Which of the following allows precise muscular movements?
1.Cerebrum
2.Cerebellum
3.Thalamus
4.Hypothalamus
Posted Date:-2021-09-09 04:06:22
Which of the following are responsible for the detection of changes in environment?
1.Receptors
2.Neurons
3.Effectors
4.All of these
Posted Date:-2021-09-09 04:06:22
Which of the following cytoplasmic extensions carry the message toward the cell body?
1.Dendrites
2.Axon
3.Both of these
4.none of these.
Posted Date:-2021-09-09 04:06:22
Which of the following has no central nervous system?
1.Hydra
2.Man
3.Planaria
4.Cockroach
Posted Date:-2021-09-09 04:06:22
Which of the following ions are involved in the initiation of nerve impulse
1.Na+
2.K+
3.Fe
4.none of these.
Posted Date:-2021-09-09 04:06:22
Which of the following is antagonist to Auxin in terms of promotion of stem growth?
1.Gibberellins
2.Cytokinins
3.Abscisic Acid
4.none of these.
Posted Date:-2021-09-09 04:06:22
Which of the following is largest part of brain
1.Cerebrum
2.Cerebellum
3.Medulla oblongata
4.Thalamus
Posted Date:-2021-09-09 04:06:22
Which of the following is present inside the vertebral column
1.Brain
2.Spinal cord
3.Both of these
4.none of these.
Posted Date:-2021-09-09 04:06:22
Which of the following is second largest part of the brain?
1.Cerebrum
2.Cerebellum
3.Thalamus
4.Hypothalamus
Posted Date:-2021-09-09 04:06:22
Which of the following is used in brewing industry to promote malting:
1.Gibberellins
2.Cytokinins
3.Auxins
4.Abscisic Acid
Posted Date:-2021-09-09 04:06:22
Which of the following neuron has a single long dendron?
1.Sensory neuron
2.Motor neuron
3.Associative neuron
4.none of these.
Posted Date:-2021-09-09 04:06:22
Which of the following statement about neuron is incorrect?
1.They not only conduct impulses but also generate them.
2.They are not the only cellular component of nervous system.
3.They may show limited regenerative capabilities.
4.Like all the living cell, when they mature and divide to form similar cells.
Posted Date:-2021-09-09 04:06:22
Which of the following transmits nerve impulse from receptors to central nervous system?
1.Sensory neuron
2.Motor neuron
3.Associative neuron
4.none of these.
Posted Date:-2021-09-09 04:06:22
Which of the followings is missing from the nervous system of planaria?
1.Ganglia
2.Longitudinal nerves
3.Lateral nerves
4.none of these.
Posted Date:-2021-09-09 04:06:22
Which type of the receptors are present in the ear?
1.Chemoreceptors
2.Mechanoreceptors
3.Photoreceptors
4.Thermoreceptors
Posted Date:-2021-09-09 04:06:22