Biology · Science General

Diversity in Living Organisms

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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 biology movement and locomotion in man locomotion in animals bones and movements muscle contraction

An example of chitinous exoskeleton is

  1. Oriole

  2. Sea stars

  3. Clam

  4. Honeybee

  5. Earthworm
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

  • A tough, semitransparent substance that is the main component of the exoskeletons of arthropods, such as the shells of crustaceans and the outer coverings of insects(honey bee). 
  • Chitin is also found in the cell walls of certain fungi and algae. Chemically, it is a nitrogenous polysaccharide (a carbohydrate). Hence, An example of a chitinous exoskeleton is Honeybee.
So, the correct answer is 'Honeybee'.

Multiple choice biology respiration in living organisms breathing underwater respiration in other organisms respiration in organism

Read the given statements characterising certain types of animals. Select the option which correctly exemplifies each of these types.


(i)  Animal having external gills.
(ii)  Animal having internal gills.
(iii) An animal showing tracheal respiration.
(iv) Animal revealing buccopharyngeal respiration.

  1. (i) Prawn (ii) Arenicola (iii) Unio (iv) Fish

  2. (i)Necturus (ii) Unio (iii)Prawn (iv)Frog

  3. (i) fila (ii) Arenicola (iii) Unio (iv)Toad

  4. (i) Necturus (ii) Pila (iii) Millipede (iv)Toad
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Necturus (Mud puppy, Amphibia) possesses three pairs of external gills. Pila (Apple snail, Mollusca) respires by means of gills (ctenidium) in water and by a pulmonary sac on land. Millipedes (Arthropoda) respire by tracheae (tracheal respiration) and toads (Amphibia) exhibit buccopharyngeal respiration.

So, the correct answer is (D).

Multiple choice biology respiration in living organisms breathing underwater respiration in other organisms respiration in organism

During hibernation, the organism that respire through skin only is

  1. Bird

  2. Frog

  3. Bacteria

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

Frogs aren't restricted to breathing only through their lungs. Frogs that spend the coldest times of the year inside of the mud or within rotten heaps of leaves receive their necessary oxygen through their skin. This is referred to as cutaneous gas exchange. They use their skin to soak in the oxygen their bodies require. When frogs hibernate, they utilize the skin for any and all breathing. Damp skin is a must for subcutaneous gas exchange. If a frog's skin becomes dry, it will no longer be able to take in oxygen. Thus, option B is correct.

Multiple choice evs a treat for mosquito algae: benefits and harmful effects basics of algae types of microorganisms

Cell wall of Chlamydomonas possesses _____________.

  1. Cellulose

  2. Glycoproteins

  3. Hemicellulose

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

The cell wall of the unicellular green alga Chlamydomonas consists of glycoproteins, which also occurs in the extracellular matrix of multicellular green algae and higher plants.

So, the correct answer is 'Glycoproteins'

Multiple choice evs a treat for mosquito algae: benefits and harmful effects basics of algae types of microorganisms

Heterocysts and present in ______________.

  1. Riccia

  2. Ulothrix

  3. Albugo

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

Heterocysts are the thick-walled cells formed in cyanobacteria (Nostoc) and are responsible for nitrogen fixation in the state of nitrogen starvation by the use of enzyme nitrogenase. These are specialized pale yellow structures  which help in nitrogen formation during aerobic conditions.

 

The correct answer is D.

Multiple choice evs a treat for mosquito algae: benefits and harmful effects basics of algae types of microorganisms

Largest unicellular organism is ___________.

  1. Yeast

  2. Acetabularia

  3. Planaria

  4. Volvox
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation
Acetabularia is the largest unicellular organism. Acetabularia is a genus of green algae, specifically of the Polyphysaceae family. It is typically found in subtropical waters. Acetabularia is a single-celled organism, but gigantic in size and complex in form, making it an excellent model organism for studying cell biology. 
So, the correct answer is 'Acetabularia'
Multiple choice evs a treat for mosquito algae: benefits and harmful effects basics of algae types of microorganisms

Algae is characterized by the

  1. Green colour slippery appearance

  2. Spreads during rainy seasons

  3. Both A and B

  4. Heterotrophic
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation
  • Algae are eukaryotic organisms that have no roots, stems, or leaves but do have chlorophyll and other pigments for carrying out photosynthesis. Thus they are autotrophic.
  • Algae can be multicellular or unicellular and are characterized by the green colour slippery appearance and spread during rainy seasons.
  • So the correct option is C.
Multiple choice evs a treat for mosquito algae: benefits and harmful effects basics of algae types of microorganisms

Algae have cells made up of.

  1. Cellulose, galactans and mannans

  2. Hemicellulose, pectins and proteins

  3. Pectins, cellulose and proteins

  4. Cellulose, hemicellulose and pectins
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The cell wall of algae is typically composed of cellulose, along with other polysaccharides like galactans and mannans. This composition varies by species but is the standard textbook description.

Multiple choice evs a treat for mosquito algae: benefits and harmful effects basics of algae types of microorganisms

Jhoomar has a water sample which has green colour scum over it. Which of the following microorganism can be observed in the given sample under a microscope?

  1. Algae

  2. Virus

  3. Bacteria

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

  • One can clearly found algae in a waterbody as algae are found in a large range in aquatic habitats. 
  • They are able to prepare their own food by the process of photosynthesis by the help of chlorophyll which gives green colour to algae. 
  • Hence the green colour scum is visible over water bodies.
  • The correct answer is A. 

Multiple choice evs a treat for mosquito algae: benefits and harmful effects basics of algae types of microorganisms

Each cell of Volvox colony has a structure, similar to

  1. Ulothrix

  2. Spirogyra

  3. Chlamydomonas

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

Volvox is colonial green alga. The cells are like unicellular alga Chlamydomdnas and are definitely organised in the form of a colony called coenobium. The coenobia of Volvox are largest, highly differentiated and well evolved among motile forms. Each coenobium is motile, the movement is brought about by the joint action of the flagella of individual cell.

Multiple choice evs a treat for mosquito algae: benefits and harmful effects basics of algae types of microorganisms

Which type of organism, live in the body of termites and digest wood cellulose converting it to soluble carbohydrates?

  1. Algae

  2. Fungi

  3. Protozoa

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

Algae are hte diverse group of aquatic organisms that have the ability to conduct photosynthesis.Certain algae are familiar to most people;for instance seaweeds, pond scum or the algal blooms in the lakes.

So, the correct option is 'Algae'.