Tag: signs of life

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Questions Related to signs of life

Multiple choice zoology living and non living characteristics of life attributes of living organisms signs of life biology : an introduction living world and classification

Which of the following is a living thing? 

  1. Lamp

  2. Car

  3. Rock

  4. Honey bee
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation
Among the given things honey bee shows exceptionally distinguished characters of living things that are:
  • Reproduction and metabolism
  • Response to stimuli.
  • Growth and development.
  • Adaptation through evolution
Hence option D "honey bee" is correct.

Multiple choice zoology living and non living characteristics of life attributes of living organisms signs of life biology : an introduction living world and classification

Biomass ferments to form _________ in the presence of air.

  1. methane

  2. ethane

  3. oxygen

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

Microbial conversion of organic matter to methane called Biogas has become attractive as a method of waste treatment and resource recovery. This process is anaerobic(absence of oxygen) and is carried out by action of various groups of anaerobic bacteria.
Three basic points about this process are that most of the important bacteria involved in biogas production process are anaerobes and slow growing, a greater degree of metabolic specialization is observed in these anaerobic microorganisms and that most of the free energy present in the substrate is found in the terminal product methane. Since less energy is available for the growth of organism, less microbial biomass is produced and, consequently, disposal of sludge after the digestion may not be a major problem.
Hence, the statement is false.

Multiple choice zoology living and non living characteristics of life attributes of living organisms signs of life biology : an introduction living world and classification

The organism made up of many cells are known as 

  1. Acellular

  2. Unicellular

  3. Multicellular

  4. None of the above
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The living organisms are composed of cells which forms the structural and functional unit of the life forms. Some of the animals are composed of only one cell which forms the complete body are known as unicellular. Some of the animals are composed of many cells which form tissues and organs are known as multicellular. 

Thus, the correct answer is option C. 

Multiple choice zoology living and non living characteristics of life attributes of living organisms signs of life biology : an introduction living world and classification

Select the option which arranges the given organisms in ascending order of their life span.

  1. $Parrot < Crow < Butterfly < Banyan\ tree$

  2. $Butterfly < Crow < Parrot < Crocodile$

  3. $Fruit fly < Crocodile < Parrot < Banyan\ tree$

  4. $Parrot < Tortoise < Dog < Crow$
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Under adequate and favourable conditions, the lifespan of a

  • Fruit fly is 40-50 days.
  • Crocodile is nearly 70-100 years, depending on the species.
  • Parrot is from 50-95 years, depending on the species.
  • Banyan tree is 200 years.
  • Crow is 7-22 years, depending on the species.
  • Butterfly is from weeks to months, depending on the species.
  • Tortoise is 150 years.
Thus, the correct answer is 'Fruitfly<Crocodile<Parrot<Banyan tree.'

Multiple choice zoology living and non living characteristics of life attributes of living organisms signs of life biology : an introduction living world and classification

Study of form and structure of organisms is

  1. Anatomy

  2. Ecology

  3. Morphology

  4. Taxonomy
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation
Morphology is a branch of biology dealing with study of form and structure of organisms and their specific structural features. It is a life science dealing with study of structure of organisms and its component parts.
So, the correct answer is 'Morphology'
Multiple choice zoology living and non living characteristics of life attributes of living organisms signs of life biology : an introduction living world and classification

The tallest plant is

  1. Anthocephalus cadamba

  2. Acacia nilotica

  3. Eucalyptus regnans

  4. Raffesia arnoldii
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation
A. Anthocephalus cadamba is about 45m tall and is a tropical tree in southern Asia.
B. Acacia nilotica is medium to large tree which grows around 5 - 8 m, native to west Asia.
C. The tallest angiosperm is Eucalyptus regnans also called mountain ash which is about 140m tall in Australia.
D. Rafflesia arnoldii is an angiosperm bearing largest flowers but it is not the largest plant.
So, the correct answer is 'Eucalyptus regnans'.
Multiple choice zoology living and non living characteristics of life attributes of living organisms signs of life biology : an introduction living world and classification

Smallest flowering plant$/$ flower is?

  1. Polyalthia

  2. Rafflesia

  3. Azadirachta

  4. Wolffia
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation
A. Polyalthia is about 20m tall plant.
B. Rafflesia is a plant with the largest flower with over 100 cm size.
C  Azadirachta is about 30 to 40 m tall
D. Wolffia is the smallest angiosperm which is less than 2 mm in measurement.
So, the correct answer is 'Wolffia'
Multiple choice zoology living and non living characteristics of life attributes of living organisms signs of life biology : an introduction living world and classification

If you go back in the history approx. 4500 million years back when atmosphere was reducing the organism were

  1. Autotroph, aerobic

  2. Chemo-autotroph, anaerobic

  3. Chemo-heterotroph, anaerobic

  4. Heterotroph, anaerobic
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The first living organisms developed in reducingatmosphere were chemo heterotrophs as they required readymade organic materials as food and anaerobes asthey were capable of  espiration in the absence of oxygen.

Multiple choice zoology living and non living characteristics of life attributes of living organisms signs of life biology : an introduction living world and classification

A plant expected to have an age of $1500$ years is?

  1. Eucalyptus

  2. Sequoia

  3. Mangifera indica

  4. Dalbergia sisso
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Sequoia has an average age of 2000 years because of favourable climatic conditions such as tannin in the bark, which makes it resistant to insects like termites. The thickness of the bark also helps protect the inner core of the tree from fire.

So, the correct option is 'Sequoia'.