Tag: biology

Quizzes (1160) Questions (12174)

Questions Related to biology

Multiple choice biology living world and classification of microbes modern classification system traditional method of animal classification salient features of five kingdoms

Which of the following is the most commonly used classification scheme?

  1. Linnaeus, five kingdom scheme

  2. Whittaker, five kingdom scheme

  3. Darwin, five kingdom scheme

  4. Hooke, five kingdom scheme
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation
R.H. Whittaker proposed the five kingdom classification in the year 1969. It is the modern or latest classification system of organisms which is most commonly used. It classifies the organisms in the groups Monera, Protista, Fungi, Plantae and Animalia. The classification is performed on the basis of the structure of cell, complexity of organisms, mode of nutrition and phylogenetic relationship.
Thus, the correct answer is option B.
Multiple choice biology living world and classification of microbes modern classification system traditional method of animal classification salient features of five kingdoms

Carolus Linnaeus was from

  1. Sweden

  2. U.K

  3. Holland

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

Carolus Linnaeus (23 May 1707 10 January 1778), also known as Carl von Linn or Carl Linnaeus was a Swedish botanist, zoologist, and taxonomist, who established conventions for naming living organisms still in general scientific use today, which is called as the binomial nomenclature. 
Thus, the correct answer is option A.

Multiple choice biology living world and classification of microbes modern classification system traditional method of animal classification salient features of five kingdoms

Choose the incorrect match from the following in Whittaker's classification.

  1. Archeae - Monera

  2. Diatoms - Protista

  3. Lichens - Fungi

  4. Green algae - Plantae
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation
A lichen is not a single organism, but the result of a partnership (mutualistic symbiosis) between a fungus and an alga or cyanobacteria. So they are not particularly classified under one single kingdom because it consists of two or more mutualistic symbiotic organisms.
So the correct option  is 'Lichens -fungi'.
Multiple choice biology animal tissues fluid connective tissue tissues of animals animal tissues and its type

How many possible genotypes are there for ABO blood groups in man?

  1. Three

  2. Four

  3. Six

  4. Eight
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation
 Genotype   Blood types
 $I^AI^O$ or $I^AI^A$ A blood type
 $I^AI^B$  AB blood type
 $I^BI^O$ or $I^BI^B$  B blood type
 $I^OI^O$  O blood type

There are six possible genotypes for the ABO blood groups in human.
The chart here shows the different genotypes, that make up the blood groups.
Therefore, the correct answer is option C.

Multiple choice biology animal tissues fluid connective tissue tissues of animals animal tissues and its type

Which of the following blood group is a universal donor?

  1. $AB^{+ve}$
  2. $O^{+ve}$
  3. $AB^{-ve}$
  4. $O^{-ve}$
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

People with type O- negative blood are the universal donor for the whole blood. That means that, anyone can receive this blood type. Being O- negative, this blood group is compatible with all the blood groups, A${^+}$and A${^-}$ve, B${^+}$ve, B${^-}$ve, and AB${^+}$, AB${^-}$ve. And the chances of rejection is the least.
Therefore, the correct answer is option D.

Multiple choice biology animal tissues fluid connective tissue tissues of animals animal tissues and its type

A person with blood group O has 

  1. Only anti- A antibodies

  2. Only anti- B antibodies

  3. Both anti- A and anti- B antibodies

  4. Both A and B antigens
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The blood group found in human beings are of four principal types: A, B, AB and O. These types are differentiated on the basis of two antigens A and B and two antibodies A and B present in the blood types. The specific combination of antigens and antibodies determines an individual's blood type. A person with blood group O has no antigen on the surface of the RBC but has both, anti- A and anti- B antibodies in his plasma.

Therefore, the correct answer is option C.

Multiple choice biology control and coordination in living organisms reflex action innate and learned behaviour coordination in human beings- chemical control

Who among the following discovered the conditioned reflexes?

  1. Sherington

  2. Hill

  3. Pavlov

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

Conditioned reflex is automatic responses to certain stimuli learnt during lifetime/training. It was studied by Russian physiologist Ivan Pavlov during his experiment on induction of salivation in dogs. Thus, the correct answer is option C.

Multiple choice biology nervous system of man reflex action innate and learned behaviour coordination in human beings- chemical control

Which one does not involve brain ?

  1. Spinal reflex

  2. Cerebral reflex

  3. Cranial reflex

  4. Voluntary action
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Reflex is an involuntary and instantaneous action in response to a stimulus.

  1. A spinal reflex is a reflex action is controlled by spinal cord and related sensory afferent and an efferent muscle without the influence of brain like we remove our hand when we touch hot object.
  2. Cerebral reflex is an involuntary controlled action that involves brain like a closing of eyes in an exposure of light.
  3. Cranial nerve is mediated by the pathway that includes cranial nerves and brain includes the peripheral and central nervous system.
  4. Voluntary actions are those which depends on our will like eating, bathing etc. and controlled by the cerebellum.
The correct option is "Spinal reflex".

Multiple choice biology nervous system of man reflex action innate and learned behaviour coordination in human beings- chemical control

Which biologist first noticed that the muscles of disected frog legs twitched wildly when a spark from an electric machine struck them?

  1. Georges Cuvier

  2. Franz Joseph Gall

  3. Kaspar Friedrich Wolf

  4. Luigi Galvani
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Luigi Galvani was an Italian physician who demonstrated what we now understand to be the electrical basis of nerve impulses when he made frog muscles twitch by jolting them with a spark from an electrostatic machine. So, the correct option is "D" (Luigi Galvani).