Tag: signs of life

Questions Related to signs of life

Select the suitable statement regarding living and non-living objects of nature.

  1. Have similar materials

  2. Obey same physico-chemical laws

  3. Both A and B

  4. Have the same materials but obey different physicochemical and biochemical laws.


Correct Option: C
Explanation:

Both living things and non living things are made up of molecules which are composed of atoms. This atoms follow same laws of physiochemistry. 

So the correct option is C "both A and B".

Match the columns:

   LIST I   LIST II 
  A  Carp  1 9-10 years
  B  Cobra  2   20 years
  C  Turtle  3   150 years
  D  Giant tortoise  4   80 years
E  Swan  5   30 years 
  1. A - 4, B - 1, C - 3, D - 5, E - 2

  2. A - 2, B - 1, C - 4, D - 3, E - 5

  3. A - 1, B - 4, C - 2, D - 3, E - 5

  4. A - 3, B - 4, C - 1, D - 2, E - 5


Correct Option: B
Explanation:

(A)Carp - (2) 20 Years -Carps are various species of oily freshwater fish from the family Cyprinidae, a very large group of fish native to Europe and Asia. For example, Cyprinus carpio (common carp) The life span of carp is about 20 Years.

(B)Cobra - (1) 9-10 Years -Cobra is the common name of various elapid snakes, most of which belonging to the genus Naja. The life span of these snakes is about 9-10 Years.
(C)Turtle - (4) 80 Years -Turtle, (order Testudines), any reptile with a body encased in a bony shell. The life span of turtles is about 80 Years.
(D)Giant tortoise - (3)150 Years -Giant tortoises are reptiles that are currently found on two remote groups of tropical islands: the Aldabra Atoll and Fregate Island in Seychelles and the Galápagos Islands in Ecuador. The life span of Gaint tortoises is about 150 years.
(E)Swan - (5) 30 Years -Swans are birds of the family Anatidae within the 
genus Cygnus. The swans' closest relatives include the geese and ducks. The life span of swans is about 30 years.
So, the correct answer is 'A - 2, B - 1, C - 4, D - 3, E - 5'

Maximum life span of a dog is 

  1. 5 years

  2. 10 years

  3. 15 years

  4. 20 years


Correct Option: D
Explanation:

A. 5 years life span – Octopus

B. 10 years life span –  Rose

C. 15 years life span – Crow

D. 20 years life span – Dog

So, the correct option is ‘dog’,

House sparrow can fly for short distances only because of the absence of 

  1. White muscles

  2. Proper wing span

  3. Pneumatic bones

  4. Red muscles


Correct Option: D
Explanation:

Red muscles stores ATP in large amount as they ahave abundant of mitochondria in them since house sparrow lacks red muscles it does not have sufficient energy for long flights.

So, the correct option is 'Red muscles'.

Most names in biological nomenclature of living organisms are taken from which language?

  1. Hindi

  2. Latin

  3. German

  4. French


Correct Option: B
Explanation:

The original scientific names were taken from Latin and Greek languages. New names are now derived either from Latin language or are latinised. This is because Latin language is dead and therefore, it will not change in form or spellings with the passage of time.

A living organism is unexceptionally differentiated from a non-living structure on the basis of

  1. Reproduction

  2. Growth and movement

  3. Interaction with environment

  4. Responsiveness


Correct Option: D
Explanation:
All organisms, from primitive prokaryotes to most advanced and complex eukaryotes, are able to sense and respond to environmental factors. The stimuli are perceived by sense organs in higher animals through sensory receptors in the eyes, ears, nose etc. Plants do not possess such sense organs. However, they do respond to external factors such as light, water, temperature, pollutants, other organisms, etc. Human beings have an additional facility of self consciousness (awareness of self). Consciousness and response to stimuli are said to be defining properties of living organisms.
So the correct option is D.

Read the following statements and select the correct ones.


(i) An increase in mass is a characteristic of living organisms
(ii) Metabolic reactions can be demonstrated outside the body in isolated cell-free systems.
(iii) 'Response to stimuli' is a defining property of living organisms.

  1. (i) and (ii)

  2. (ii) and (iii)

  3. (i) and (iii)

  4. (i), (ii) and (iii)


Correct Option: D
Explanation:

(i) Increase in mass and increase in number of individuals are twin characteristics of growth is true
(ii) Metabolic reactions can be demonstrated outside the body in isolated cell-free systems is true
(iii) 'Response to stimuli' is a defining property of living organisms is true

So, the correct option is '(i), (ii) and (iii)'.

There are various types of reproduction. The type of reproduction adopted by an organism depends on

  1. The habitat and morphology of the organism

  2. Morphology of the organism

  3. Morphology and physiology of the organism

  4. The organisms habitat, physiology and genetic makeup


Correct Option: D
Explanation:
There are various types of reproduction, both asexual (fission, budding, etc.) and sexual (internal and external). The type of reproduction, an organism undergoes depends ultimately on its genetic makeup which influences its physiology. Habitat also influence the type of reproduction, that organism undergoes.
So, the correct answer is 'The organisms habitat, physiology and genetic makeup'.

The ascending or descending arrangement of taxonomic categories is called as.

  1. Classification

  2. Taxonomy

  3. Hierarchy

  4. Key


Correct Option: C
Explanation:

Hierarchy of categories is the classification of organisms in a definite sequence of categories(taxonomic categories) in a descending order starting from kingdom and reaching upto species or an ascending order from species of kingdom.

The scientific name of banyan is written as Ficus benghalensis L. Which of the following statements is correct regarding this?

  1. Letter L. signifies Latin language

  2. The name should be written reverse with benghalensis preceding Ficus

  3. Letter L. signifies the taxonomist Linnaeus

  4. Benghalensis is a generic name


Correct Option: C
Explanation:

In binomial nomenclature, the first or generic word starts with a capital letter while the second word or specific epithet starts with a small letter. The name of taxonomist appears after the specific epithet, i.e., at the end of the biological name and is written in abbreviated form, e.g., Ficus benghalensis L., indicates that this species was first described by Linnaeus.