Coordination and Control

2,4 D kills broad leaved:

A cluster of neuron’s cell bodies form:

A few cranial nerves including the vagus nerve together with fibres from the bottom portion of spinal cord, form the:

A pair of adrenal glands is present, one on top of each:

A directed movement either towards (positive taxis) or away from (negative taxis) a stimulus is:

Abscisic acid can be sprayed on tree crops to regulate:

Abscisic acid inhibits stem growth notably during physiological stress, e.g.:

Abscisic acid promotes closing of stomata under conditions of:

The main transmitter for synapses that lie outside the central nervous system is:

Active membrane potential is:

A mineralocorticoid hormone which conserves the level of Na+ ions in the body by preventing their loss from the kidney tubules is:

Alzheimer’s disease is characterized by the decline in the function of:

Development of the secondary male characters is caused by:

Antidiuretic hormone is also called:

Associative neurons are the neurons which occur exclusively in the:

Auxins are:

Auxins promote growth of roots from:

Behaviour is divided into:

Beneath the cranium, the brain and spinal cord are protected by triple layer of:

Between the layers of meninges, the fluid that bathes the neurons of brain and spinal cord is:

Biorhythms are called circadian which means about one day, so they are also called:

The largest part of the brain is:

Corticosterone is:

Cortisol brings about an increase in blood glucose level mainly by its production from protein and by antagonizing the action of:

The part of skull that protects the brain and neural arches of vertebrae is:

Cytokinins delays the aging of fresh leaf crops, such as cabbage and lettuce as well as keeping flowers:

Cytokinins promote stem growth by cell division in:

Cytoplasmic processes or fibres which carry impulse towards cell body are called:

Who was the first to propose an objetive definition of instincts in terms of animal behaviour:

Deficiency of thyroxine in adults, perhaps due to iodine shortage in diet, produces a swelling of the neck or:

Diffused nervous system is found in:

Each type of the principal type of sensation that we can experience e.g. pain, touch, sight, sound and so forth is called a modality of:

Effective drugs for Parkinson’s disease are available such as:

Electrical potential is a measure of the capacity to do:

The most important test in the study of epilepsy is:

One of the convulsive disorders of nerves is:

Ethene induces flowering in:

Ripening of tomatoes and citrus fruit is stimulated by:

Excess MSH is secreted in:

Excess thyroxine produces a condition called:

Failure to produce insulin leads to a condition called:

Fibres from the eyes (retina) terminate in the:

Forebrain is further divided into:

How many pairs of spinal nerves arise from or lead to spinal cord:

Which hormone in females stimulates follicle development and secretion of oestrogens from the ovaries:

Which hormone in males stimulates development of the germinal epithelium of the testis and sperm production:

What is used in the brewing industry to stimulate a-amylase production in barley and this promotes malting:

The concentrations of cell bodies of neurons called:

The hormone produced by mucosa of the pyloric region of the stomach is:

Gastrin stimulates the secretion of:

Gibberellins are produced commercially from:

Glucagon causes an increase in levels of blood:

Gonadotrophic hormones are:

Gray matter consists of:

The simplest form of learning is:

Hindbrain includes the:

An important role in the formation of long term memory is played by:

Human nervous system is a type of:

Hydra shows:

What in the male stimulates the interstitial cells of the testis to secrete testosterone:

Which hormone is produced in excess during early life and leads to gigantsim in the abnormal development of hands, feet, jaw, etc.:

If the biorhythms are less than or about 365 days, these rhythms in activity are called:

Imprinting is best known in birds such as:

In addition to neurons, there are also other cells, in the nervous system of higher animals and humans, called:

Too much cortical hormone is produced in:

In humans, there are 12 pairs of nerves, which arise from the brain or lead to the brain; these nerves are called:

In infants, the deficiency of thyroxine causes a dwarfed condition called:

In living things the behavioural activities occur at regular intervals which are called:

In mammals thyroid gland consists of two lobes situated above the:

In man the parathyroids are found embedded in the posterior part of the lateral lobes of the:

In adult man the pituitary gland or hypophysis cerebri is an ovoid structure about:

In myelinated neurons the impulse jumps from node to node (node of Ranvier). This is called:

Cluster of neurons produce sensation of pleasure, punishment or sexual arousal when stimulated in the:

In the sensory neurons, the single elongated dendrite is called a:

In the unstimulated state, a neuron has a membrane potential of approximately:

Innate behaviour is a collection of responses that are predetermined by the:

Insulin inhibits the hydrolysis of glycogen in the:

Interstitial cells produce gonadal hormones called:

A major cause of chlorosis is the shortage of:

Hormones oxytocin and vasopressin or antidiuretic hormone (ADH) are produced in:

A behaviour in which an organism changes the speed of random movements which help them to survive in the environment is:

Kohler performed many experiments on chimpanzee, and showed that they have higher form of learning called:

Learning behaviour depends on the:

Learning depends on the:

LH works with FSH to stimulate oestrogen secretion and rupture of mature follicles to release:

Which is not neurotransmitter:

Mechanoreceptors detect stimuli of:

Several automatic functions such as breathing, heart rate, blood pressure and swallowing are controlled by:

Medulla oblongata narrows down into an oval shaped hollow cylinder, the spinal cord, running through the:

Meissner’s corpuscles lie in papillae which extend into the ridges of the:

Autonomic nervous system is formed of:

Motor neurons are the neurons which carry nerve impulses from brain and spinal cord to the:

Motor neurons form somatic nervous system which controls:

A vital role in the nutrition of neurons and their protection by myelin sheath is played by:

Neurophysiologists believe that the increased permeability is due to the opening of specific pores in the membrane, termed:

Nicotine affects post synaptic membrane in:

Nicotine may induce:

Nociceptors produce the sensation of:

Oestrogens are secreted by ripening:

Oestrogens bring about the development of the secondary sexual characters in the: