Tag: endocrine system in humans
Questions Related to endocrine system in humans
Which one of the following is not true of singing in male birds?
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All songs are learned from their parents
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It is done to claim a territory
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They generally sing at dawn or dusk.
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The typical song is characteristic of a species
Singing is an essential part of bird life, but it's costly in terms of time and energy. Singing loud and proud first thing in the morning tells everyone within hearing distance that a bird is strong and healthy enough to survive the night. This is attractive to potential mates, and lets the competitors know that they still around and in charge of your territory.
A small area occupied by single males for displaying courtship traits is called
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Niche
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Lek
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Territory
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Den
Courtship display are certain behaviors that are displayed by an animal in an attempt to attract a mate. A small area occupied by single males for displaying courtship traits is called as Lek. Lek is an animal behaviour. Lek. In this, males of a particular species perform courtship displays. It is also called as arena behaviour. It is seen in birds, mammals. A niche of an organism is a functional role it plays into an ecosystem. Territory is a sociographical area that is defended by group of animals of a particular species from other animals of different species for purposes like mating, nesting, roosting, feeding.
Both reptiles and birds share a number of anatomical features which led biologists to believe that birds descended from reptiles. What are those features?
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Presence of an egg tooth in the young at the time of hatching
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Lower Jaw made up of five parts
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Presence of only one occipital condyle
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All the above
Since crocodiles plummet from a typical precursor with dinosaurs, they can give a helpful developmental correlation with feathered creatures. (In spite of their appearance, flying creatures are more firmly identified with crocs than reptiles are.). Fossilized skulls of child dinosaurs demonstrate a similar example they take after grown-up winged animals.
Which of the following is not true?
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Small sized reptiles of dinosaurs of that era still exist today
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Tyrannosaurs rex was about 20 feet in height and had huge some dagger like teeth.
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Dinosaur extinct, a possible reason may be most of them has evolved into birds
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Giant ferns fell to form coal deposits very fast
Conditioning behaviour that uses neutral stimulus is called as
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Classical conditioning
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Operant conditioning
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Neutral conditioning
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None of the above
Classical conditioning refers to a learning procedure in which a biologically potent stimulus (e.g. food) is paired with a previously neutral stimulus (e.g. a bell).
- It's important to note that classical conditioning involves placing a neutral signal before a naturally occurring reflex. In Pavlov's classic experiment with dogs, the neutral signal was the sound of a tone and the naturally occurring reflex was salivating in response to food. By associating the neutral stimulus with the environmental stimulus (presenting of food), the sound of the tone alone could produce the salivation response.
- Hence, classical conditioning is the correct answer.
Animal behaviour is based on
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Motivation
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Biological activities
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Chemical reactions
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Biochemical reactions
The type of animal behavior depends on the stimulus provided and the response generated by the stimulus. When the stimulus is generated, the stimulus is analyzed by the brain or the spinal cord. There are various biochemical reactions which take place in response to the stimulus which is received. The type of response by the animal as a part of the behavior is based on these biochemical reactions.
Instinct behaviour is
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Autonomic response
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Conditioning response
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Voluntary response
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None of the above
Instinct behaviour is the autonomic response to the stimuli (external) or environmental conditions. It develops when a human rationalises several voluntary and involuntary actions according to his/her will. It is the behaviour intrinsic to the person. So, the correct option is 'Autonomic response'.
A behaviour that can modify by reinforcement and punishment is called as
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Classical conditioning
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Operant conditioning
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Imitation
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Instinct
Operant conditioning is a method of learning that occurs through rewards and punishments for behavior. Through operant conditioning, an association is made between a behavior and a consequence for that behavior.
For example, when a lab rat presses a blue button, he receives a food pellet as a reward, but when he presses the red button he receives a mild electric shock. As a result, he learns to press the blue button but avoid the red button.
Hence operant conditioning is the right answer.
The production of sounds by some insects by rubbing together parts of the body, usually to attract a female, is known as
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Undulation
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Stridulation
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Cacophony
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Swan Song
Stridulation is the act of producing sound by rubbing together certain body parts. This behavior is mostly associated with insects, but other animals are known to do this as well, such as a number of species of fish, snakes and spiders. The mechanism is typically that of one structure with a well-defined lip, ridge, or nodules (the "scraper" or plectrum) being moved across a finely-ridged surface (the "file" or stridulitrum—sometimes called the pars stridens) or vice versa, and vibrating as it does so, like the dragging of a phonograph needle across a vinyl record. Sometimes it is the structure bearing the file which resonates to produce the sound, but in other cases it is the structure bearing the scraper, with both variants possible in related groups. Common onomatopoeic words for the sounds produced by stridulation include chirp and chirrup.