Biology · Science General

Diversity in Living Organisms

3,323 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 evs life inside water aquatic habitat animal and habitat wonderful world of bholu

Which of the following are the characteristics of amphibians?

  1. They can survive on land as well as water.

  2. They live on trees.

  3. They are aquatic.

  4. Both A and B.
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Amphibians are defined by their ability to live both on land and in water, which is the primary characteristic distinguishing them from purely aquatic or purely terrestrial animals.

Multiple choice biology excretion to maintain homeostasis excretion in other organisms other excretory organ role of other organs in excretion

Match the following w.r.t Platyhelminthes.

A) Flame Cells I. Anchorage
B) Hooks and Suckers II. Absorption
C) Regeneration III. Osmo regulation
D) Body surface IV. Planaria
  1. $A - II, B - IV, C - I, D - III$
  2. $A - III, B - I, C - IV, D - II$
  3. $A - III, B - II, C - III, D - I$
  4. $A - IV, B - II, C - I, D - III$
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

A flame cell is a specialized excretory cell found in the platyhelminthes like planaria. They  function like a kidney, removing waste materials by the process of osmoregulation.

Hooks and suckers are specialized structures in parasites of the platyhelminthes like tapeworm. It helps in attachment and anchoring to the host organisms.
Planaria can be cut into pieces, and each piece can regenerate into a complete organism. Cells at the location of the wound site proliferate to form a blastema that will differentiate into new tissues and regenerate the missing parts of the piece of the cut planaria.
Increased body surface helps in more absorption in platyhelminthes.
 So the correct answer should be option B "A-III, B-I, C-IV, D -II"

Multiple choice biology excretion to maintain homeostasis excretion in other organisms other excretory organ role of other organs in excretion

Which one of the following doesnt have a aminotelic excretory system?

  1. Asterias

  2. Unio

  3. Limnaea

  4. Oniscus

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Organisms which excretes amino acids are called aminotelic. Organisms like Asterias, Uni, Limnaea etc have an aminotelic excretory system. Oniscus is a land crustacean which excretes uric acid and falls into uricotelic category.

Since Oniscus is the odd one, the correct option is 'D'.

Multiple choice biology excretion to maintain homeostasis excretion in other organisms other excretory organ role of other organs in excretion

Fill up the blank spaces in the table below by selecting the correct option.

Phylum/Class Excretoryorgan Circulatorysystem Respiratoryorgan
Arthropoda A B Lungs/Gills/Tracheal system
C Nephridia Closed Skin
D Metanephridia Open E

  1. A-Green gland, B-Closed, C-Mollusca, D-Annelida, E-Tracheal system

  2. A-Malpighian tubule, B-Open, C-Annelida, D-Mollusca, E-Feather-like gills

  3. A-Antennary gland, B-Open, C-Porifera, D-Amphibia, E-Lungs

  4. A-Nephridia , B-Closed, C-Mollusca, D-Annelida, E-Lungs
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

A - Malpighian tubule

B - Open
C - Annelida
D - Mollusca
E - Feather- like gills
So, the correct answer is (b).

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.