Biology · Science General

Diversity in Living Organisms

3,829 Questions

The diversity in living organisms deals with the classification of life forms into various kingdoms and phyla. This topic covers specific traits of bacteria, animal body cavities, and structural adaptations for survival. These fundamentals are crucial for biology sections in medical entrance and state board exams.

Animal phyla characteristicsBacteria and flagellaBiological adaptationsKingdom Animalia classificationBody cavity typesExtinct organism subphylaJawless animals identification

Diversity in Living Organisms Questions

Multiple choice types of circulatory system circulatory pathways transportation in plants and circulation in animals body fluids and circulation biology

The open circulatory system is present in-


(a) Arthropoda, (b) Annelida, (c) Chordates, (d) Mollusca

  1. c only

  2. c and b

  3. a and b

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

An open circulatory system is present in arthropods in which blood is pumped by the heart passes through large vessels into open spaces or body cavities called sinuses. Annelids and chordates have a closed circulatory system in which the blood pumped by the heart is always circulated through a closed network of blood vessels.

So, the correct answer is option D.

Multiple choice types of circulatory system circulatory pathways transportation in plants and circulation in animals body fluids and circulation biology

Which of the following groups of animals have closed circulatory system?

  1. Cockroach, Locust, Molluscs

  2. Non-cephalopod molluscs, Cockroach

  3. Cephalopod molluscs and Earthworm

  4. Hemichordates and Non-cephalopd molluscs
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Closed circulatory system has blood closed in all vessels within vessels of different sizes. In this type, the blood is pumped through vessels by heart. This type of circulatory system is more structured and controlled. 

So, the correct option is 'Cephalopod molluscs and earthworm'.

Multiple choice botany biotechnology and genetic engineering use of microbes in biotechnology use of microbes in industrial applications useful microorganisms

Which of these organisms is unicellular, causes fermentation of sugar solutions and respires anerobically?

  1. Rhizopus

  2. Yeast

  3. Amoeba

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

The yeast is a type of fungal species which have unicellular cells. These cells are known to perform anaerobic fermentation of the sugars and produce alcohol and carbon dioxide. The organism respires anaerobically and breaks down the fermentable sugars in the absence of oxygen.

Thus, the correct answer is option B. 

Multiple choice botany biotechnology and genetic engineering use of microbes in biotechnology use of microbes in industrial applications useful microorganisms

Aseptic culture means

  1. Absence of life

  2. Presence of bacteria

  3. Absence of other organisms like microbes

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

Aseptic culture means culture which takes place in the absence of harmful microbes or other contaminants. During tissue culture, the cells are kept under the aseptic condition to avoid contamination caused by microbes because the microbes inhibit the growth of the cell and utilize the nutrients provided for the plants in the media for their growth as they have the ability to multiply fast. The aseptic condition during culture can be maintained by the process of heating, fumigation of lab, autoclave apparatus before use, wiping the apparatus with alcohol, performing the experiment in the laminar air flow under HEPA filters. 

So, the correct answer is option C.

Multiple choice biology why classification? modern classification system traditional method of animal classification salient features of five kingdoms classification hierarchy hierarchy of classification

According to Whittaker, kingdom Monera includes

  1. Unicellular eukaryotes

  2. Prokaryotes

  3. Slime molds and protozoa

  4. Multicellular and eukaryotes
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The five kingdom classification was proposed by R. H. Whittaker in the year 1969. The kingdom Monera is comprised of unicellular prokaryotic organisms. This group contains the bacteria and the cyanobacteria species. The other four kingdoms, protista, fungi, plantae and animalia are composed of all the eukaryotic organisms. 

Thus, the correct answer is option B. 

Multiple choice biology why classification? modern classification system traditional method of animal classification salient features of five kingdoms classification hierarchy hierarchy of classification

Which of the following is not one of the five kingdoms of R. H. Whittaker's classification system?

  1. Animalia

  2. Monera

  3. Protista

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

Robert H. Whittaker in 1969, proposed five kingdom system of classification of organisms. The following three criteria were used for classification:

1) Complexity of cell structure
2) Complexity of the organism's body
3) Mode of nutrition.
Five kingdoms of Whittaker's classification include Monera, Protista, Fungi, Plantae, Animalia. Hence option D is the correct answer. 

Multiple choice biology why classification? modern classification system traditional method of animal classification salient features of five kingdoms classification hierarchy hierarchy of classification

Kingdom in which boundaries are not well defined includes _____________.

  1. Sole organisms as bacteria

  2. Organisms live as predators or parasites also

  3. Organism primarily terrestrial

  4. Achlorophyllous, spore producing organisms with loose tissue level today organisation
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The Kingdom Protista (often including bacteria in older classifications) has boundaries that are not well defined because it contains diverse organisms that do not fit neatly into other kingdoms.

Multiple choice botany why classification? modern classification system traditional method of animal classification salient features of five kingdoms classification hierarchy hierarchy of classification

Read the following statements and find out the correct statement:-
(a) Human being can move limbs, jaws,eyelids and earpinna etc.
(b) Streaming of protoplasm in unicellular organism like amoeba is a simple form of movement
(c) Movement of significant feature of living beings.
(d) movement of cilia, flagella are shown by many organism.

  1. a,b,c

  2. b,c,d

  3. c,d,a

  4. d,a,b
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Human beings can move their limbs, jaws, eyelids, and ear pinna etc. These movements are referred to them by the presence of voluntary muscles and a framework of the body that allows Movement in such possible ways.

Streaming of Protoplasm in a unicellular organism like Amoeba is a simple form of movement as it allows them to move in a media.
Movement of cilia, flagella are shown by many organisms ranging from algae, protozoa to certain animals in the animal kingdom.
However, the movement is not a significant defining feature of living beings, for example, the sponges are living beings however majority of them are immovable plants also show similar characteristics.
So the correct answer is 'd, a, b' .

Multiple choice botany why classification? modern classification system traditional method of animal classification salient features of five kingdoms classification hierarchy hierarchy of classification

Virus belongs to the kingdom ___________.

  1. Protista

  2. Monera

  3. Animalia

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

Five kingdom classification was given by R.H. Whittaker. Classification of viruses has always been difficult as they are said to be threshold of life. Thus viruses did not find any position in five kingdom classification.

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

Which one of the following does not find a heterotrophs place in five kingdom system of classification?

  1. Bacteria

  2. Lichens

  3. Cyanobacteria

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

Viruses are considered to be acellular as they do not have a defined cell wall, cell membrane, nucleus or nucleoid, cytoplasm and cellular organelles. For this reason, they cannot perform their metabolic activities on their own and are obligately dependent on the host cell machinery. Therefore, they do not find a place in the five-kingdom classification system. 

A. Bacteria are classified under Kingdom Monera as they have a prokaryotic cell.
B. Lichens are grouped under Kingdom Fungi.
C. Cyanobacteria are photosynthetic prokaryotes grouped under Kingdom Monera.
D. No kingdom is ascribed to the viruses.
Hence, the correct answer is 'Viruses'

Multiple choice botany components of food balanced diet food production and microbes plant breeding for food production effect on general health diseases caused by changes in lifestyle diet, drugs and disease

____ and ____ are unicellular algae, rich in proteins, that are used as food supplements even by space travellers. 

  1. Chlorella, Spirulina

  2. Gelidium, Gracilaria

  3. Porphyra, Spirogyra

  4. Laminaria, Spirogyra
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Chlorella (Green alga), as food supplement is rich in protein and carbohydrates. It yields about 30% proteins, 15% lipids, 30% carbohydrates and 5% ash. Spirulina platensis (blue-green alga) is one of the richest sources of protein and vitamin $B _{2}$. In long range space exploration, scientist have turned to Chlorella and Spirulina to use them as portable oxygen generators and food sources.

Multiple choice botany strategies for enhancement in food production balanced diet food production and microbes plant breeding for food production

Single cell protein can be obtained from 

  1. bacteria

  2. algae

  3. fungi

  4. all of these
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Single cell protein can be obtained from cells of microorganisms such as yeast, fungi, algae and bacteria which are grown on carbon sources for synthesis. SCP is a protein supplement for animals and humans. Example ; Spirulina produces large quantity of food which are rich in protein, carbohydrates, fats, minerals and vitamins. It also reduces environmental pollution. 

So, the correct option is 'Option D' .