Tag: natural selection

Quizzes (1) Questions (177)

Questions Related to natural selection

Multiple choice biology animal behaviour ethology natural selection coordination in human beings- chemical control endocrine system in humans

In batesian mimicry, one species resembles another, poisonous species. 
I. Poisonous species is more common than mimic
II. Poisonous species is present in same area as mimic
III. Poisonous species competes for resources with mimic
IV. Poisonous species is distinctly or brightly colored

The effectiveness of batesian mimicry can be increased by

  1. I and II

  2. I, II and III

  3. I, II and IV

  4. II, III and IV

  5. I, II, III and IV
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Batesian mimicry refers to the resemblance of a harmless or palatable species with that of a dangerous or unpalatable one to make predators avoid them. A more common and distinct poisonous species present in the same area as mimic become familiar to predators of mimic and thereby increase the effectiveness of mimicry. Competition between mimic and poisonous species would harm either of them while mimicry is an adaptation for the protection of mimic. Thus, the correct answer is option C.

Multiple choice biology animal behaviour ethology natural selection coordination in human beings- chemical control endocrine system in humans

A behavioral strategy of adaptation called echolocation is found in 

  1. bats

  2. butterfly

  3. praying mantiis

  4. arctic tern
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Bats are nocturnal flying mammals which do not employ eyesight for location of their path. food place of rest etc. They produce high frequency sound which produces echoes after striking various objects on the principle of sonar. Echoes are then analysed by bats to know their path.  

Multiple choice biology option a: neurobiology and behaviour ethology animal behaviour natural selection

An instinct is

  1. Caring for offspring

  2. Habituation

  3. Operant conditioning

  4. Associative behavior

  5. Observational learning
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

  • Instinct is the natural force that causes a person or animal to behave in a particular way without thinking or learning about it.
  • In almost every species of animals, caring for offsprings until they are mature enough is seen. 
Hence, the correct option is 'Caring for offspring'.

Multiple choice biology option a: neurobiology and behaviour ethology animal behaviour natural selection

Which of the following is the most simplest form of learned behaviour?

  1. Dominance

  2. Reflex

  3. Instinct

  4. Imprinting

  5. Habituation
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Instinct is an innate, typically fixed pattern of behaviour in animals in response to certain stimuli. An instinct is something that doesn't need to learn and it happens naturally, without even thinking about it and so is the simplest form of learned behaviour. 

Multiple choice biology option a: neurobiology and behaviour ethology animal behaviour natural selection

Colostrum, the first milk secretion of mammary gland of cow, is rich in immunoglobin

  1. IgE

  2. IgM

  3. IgA

  4. IgG
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Colostrum is produced in the initial secretions of the mammary gland following the birth of offspring. Colostrum is most commonly distinguished from whole milk because it contains high concentrations of immunoglobulins (Ig), otherwise known as antibodies. Antibodies are proteins which function to identify and destroy disease-causing pathogens in livestock. The primary immunoglobulin in cow colostrum and milk is IgG, whereas the primary immunoglobulin in human milk is IgA. Colostrum is also a vital source of growth factors and nutritional elements such as protein, fat, milk sugar, vitamins and minerals.

Multiple choice biology option a: neurobiology and behaviour ethology animal behaviour natural selection

Raj was swimming in a pond. When he walked back to his car, he noticed that several newly hatched ducklings were following his moves. Which among the following explains it correctly?

  1. Tropism

  2. Conditioning

  3. Sympathetic nervous system

  4. Associative learning

  5. Imprinting
Reveal answer Fill a bubble to check yourself
E Correct answer
Explanation
  • Tropism is referred to as the response to a stimulus.
  • Conditioning is a behavior where the response comes from frequent predictable consequences.
  • The sympathetic nervous system regulates the unconscious actions.
  • Associative learning is when a new response becomes associated with a particular stimulus.
  • Imprinting is a way of learning at a certain phase of life in which the organism follows the surrounding environment.  It is generally seen at the early hours of a newborn. It helps in the vocational development of organisms.
So, the correct option is 'Imprinting'.