Tag: signs of life

Questions Related to signs of life

Germination of seeds can be related to which of the following properties of the living organism?

biology biology : an introduction introduction to organization of life signs of life what is living?

  1. Reproduction

  2. Growth

  3. Response to stimulus

  4. Both B and C

Show answer
Correct Option: D
Explanation:
Seed germination in response to diurnal fluctuations of temperature. Diurnal fluctuations in temperature may initiate or accelerate germination in certain flowering plants, and the effectiveness of the stimulus varies according to the amplitude of fluctuation and the presence or absence of light. These seeds after germinating brow into a new plant.
So the correct option is D "both B and C".

The release of oxygen by the plant during photosynthesis can be related to which of the following characteristics of the living organism?

biology biology : an introduction introduction to organization of life signs of life what is living?

  1. Absorption

  2. Movement

  3. Response to stimuli

  4. None of the above

Show answer
Correct Option: D
Explanation:

Photosynthesis is a metabolic process done by plants to produce starch from carbon dioxide and water in presence of sunlight. During this process, residual oxygen atoms are turned to the oxygen molecules as a byproduct. So it's cannot be compared to absorption, movement, and response to stimuli.

So the correct option is D "none of the above".

The buds on the potato determine the which of the following ability of the living organism?

biology biology : an introduction introduction to organization of life signs of life what is living?

  1. Locomotion

  2. Growth

  3. Movement

  4. None of the above

Show answer
Correct Option: B
Explanation:

Buds of potato are a type of vegetative reproductive part of the potato. These buds can individually be grown as a whole new plant with proper habitat and nutrition. 

So the correct option is B "growth".

Stomata can be related to which of the following activity

biology biology : an introduction introduction to organization of life signs of life what is living?

  1. Locomotion

  2. Excretion

  3. Movement

  4. Reproduction

Show answer
Correct Option: B
Explanation:

Stomata are pores found on the surface ie. epidermis of the leaf. These are used for the exchange of gases and releasing water by the process of transpiration. In some plants, calcium salts are also excreted through these pores. So the correct option is B "excretion".

Which of the following is the characteristics of a living organism?

biology biology : an introduction introduction to organization of life signs of life what is living?

  1. Homeostasis

  2. Metabolism

  3. Adaptation

  4. All of the above

Show answer
Correct Option: D
Explanation:
Homeostasis is the state of steady internal conditions maintained by living things. This dynamic state of equilibrium is the condition of optimal functioning for the organism and includes many variables, such as body temperature and fluid balance, being kept within certain pre-set limits.
Metabolism is the chemical processes that occur within a living organism in order to maintain life.
Adaptation is the process of change by which an organism or species becomes better suited to its environment.
An organism shows all of the given characters. 
So the correct option is D "all of the above".

Plants are considered as living organism because

biology biology : an introduction introduction to organization of life signs of life what is living?

  1. They are capable of movement.

  2. They are capable to locomote.

  3. They can breathe.

  4. Both A and C.

Show answer
Correct Option: D
Explanation:

As a response to external stimuli, the plants show movement. For eg. plants tend to move towards the source of light, this is positive phototropism. It is prominently seen in sunflower. It also shows hydrotropism in the roots.

It is proved experimentally that plants can breathe. The basic principle of breathing includes the exchange of gases. It is seen that plants absorb carbon dioxide and release oxygen.
So the correct option is D "both A and C."

The lifespan of the dog is .......... years.

biology biology : an introduction introduction to organization of life signs of life what is living?

  1. 12 to 18

  2. 18 to 24

  3. 6 to 12

  4. 12 to 20

Show answer
Correct Option: A
Explanation:
  • The ageing profile of dogs varies according to their adult size (often determined by their breed): smaller dogs often live over 15 to 16 years.
  • Whereas the medium and large sized dogs typically live for 10 to 13 years and some giant dog breeds such as mastiffs, often live only for 7 to 8 years.
  • So, the average lifespan for a dog is 12- 18 years.
  • So, the correct answer is option '12-18 years'.

Which of the following sets does not contain defining characteristics of living organisms?

biology biology : an introduction introduction to organization of life signs of life what is living?

  1. Growth and reproduction

  2. Metabolism and cellular level of organisation

  3. Response to stimuli and consciousness

  4. None of these

Show answer
Correct Option: D
Explanation:

Characters like growth, reproduction, metabolism, responsiveness to stimuli are all defining characteristics of living organisms

Choose the correct answers from the alternatives given .
Which of the following is characteristics of living organisms?

biology biology : an introduction introduction to organization of life signs of life what is living?

  1. To be organised

  2. To respond

  3. To metabolise

  4. All of these

Show answer
Correct Option: D
Explanation:
Living organisms show certain characteristics that make them different from non-living. 
  • Cellular organization - Each living organism has cells as a basic unit of life. Different organelles are organized to function as a unit inside the cell.
  • Ability to response - a living organism can sense and respond accordingly to external environmental conditions or stimuli. 
  • Metabolism - Different types of chemical reactions occur inside living organisms to maintain their living state. 
All of the given options are characteristics of living organisms. 
So the correct answer is "All of these".

Which of the following statements regarding the universal rules of biological nomenclature is incorrect?

biology biology : an introduction introduction to organization of life signs of life what is living?

  1. Biological names are either derived from Latin language or are Latinised

  2. The first word in a biological name represents the genus while the second component denotes the species

  3. Both the words in a biological name, when handwritten, are separately underlined, or printed in italics to indicate their Latin origin

  4. The specific epithet starts with a capital letter while the generic epithet starts with a small letter. It can be illustrated with the example of mangifera Indica

Show answer
Correct Option: D
Explanation:

The generic epithet starts with a capital letter while the specific epithet starts with a small letter. It can be illustrated with the example of Mangifera indica.