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

Single cell protein means the protein which can be obtained by the culture of single-celled organisms and these proteins are generally used as dietary supplements. Bacteria, algae, fungus all of them are either single-celled structures or the groups have one or more forms which are single-celled. Thus, all of them form sources of single-celled protein.

So, the correct answer is 'All of the above'.

Multiple choice evs a snake charmer's story snakes snakes and snake charmers uses of animals

The snake smell by using

  1. Skin

  2. Tongue

  3. Scales

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

Snakes have vomeronasal organs on the top of their mouths that recognise smells and tongue helps them do so.

The skin or scales do not have any such receptors hence they do not contribute in detection of smell.
So the correct answer is 'Tongue'. 

Multiple choice zoology excretion in living organisms excretion - animals human excretory system and products excretory system and products excretion - plants excretion in plants

Which one of the following statements is incorrect? 

  1. Birds and land snails are uricotelic animals.

  2. Mammals and frogs are ureotelic animals.

  3. Aquatic amphibians and aquatic insects are ammonotelic animals.

  4. Birds and reptiles are urotelic
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

In Uricotelic organisms, the end product of nitrogen metabolism is uric acid.  include terrestrial arthropods (including insects), lizards, snakes, and birds. 

So, the correct option is 'Birds and reptiles are urotelic'. 

Multiple choice biology the respiratory system factors affecting breathing exchange of gases transport of respiratory gases

Which one of the following can respire in total absence of air (anoxybiosis)?

  1. Amoeba

  2. Bed bug

  3. Hydra

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

Tapeworms live in the human gut and can be up to 9 meters long. Parasites have specific features which enable them to survive in or on their host. They use anaerobic respiration, so that they can survive without oxygen.

Multiple choice zoology earthworm earthworm - reproductive system reproduction in earthworm introduction to reproduction

In Pheretima, the dorsal surfaces is marked by a mid dorsal line, whereas the ventral surface is distinguish the present of

  1. Dorsal blood vessels

  2. Genital pores

  3. Absence of setae

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

Genital pores for both male and female organs are present on the ventral side of the earthworm. Also, setae are present on the ventral side.

So, the correct option is 'Genital pores'.

Multiple choice zoology earthworm earthworm - reproductive system reproduction in earthworm introduction to reproduction

A biology student has to distinguish the anterior and posterior end of Pheretima morphologically. For it, he can observe/ locate

  1. Parapodia

  2. Eyes

  3. Clitellum

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

The anterior region of Pheretima consists of a thick, saddle-like ring found in the epidermis known as Clitellum This structure is easily visible with naked eyes hence a person can easily distinguish the anterior and posterior end of pheretima.

So the correct answer is 'Clitellum'.

Multiple choice zoology earthworm earthworm - reproductive system reproduction in earthworm introduction to reproduction

Which of the following is marine leech?

  1. Haemadipsa

  2. Bonellia

  3. Hirudinaria

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

Leech belongs to phylum Annelida. The 'green spoonworm' (Bonellia viridis) lives in a marine habitat. It shows sexual dimorphism. It is also known as the biocidal properties of a pigment in its skin. It is found in the north-eastern Atlantic, Indian and Pacific Oceans and the Mediterranean and Red seas. It is pale- to dark-green in colour, with a 15 cm long, round or sausage-shaped body. Hence, option B is correct.

Multiple choice zoology earthworm earthworm - reproductive system reproduction in earthworm introduction to reproduction

Choose the correct answers from the alternatives given.
Flukes and tapeworms:

  1. show cephalization

  2. have well-developed reproductive systems

  3. have well-developed nervous systems

  4. have a tube-within-a-tube body plan
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Tapeworm and fluke worms belong to class Platyhelminthes. They both are having well developed reproductive systems.

So the correct answer is "have well-developed reproductive systems".

Multiple choice biology human brain and sense organs the brain nervous system in humans central nervous system

The following are endothermic mammals. Amongst them there is a pair where the broad transverse band of nervous tissue connecting the two cerebral hemisphere is either poorly developed or absent
1. Didelphis (Opossum) 
2. Delphinus (Dolphin)
3. Tachyglossus (Echidna) 
4. Pteropus (Fruit Bat)

  1. 1 and 2

  2. 2 and 4

  3. 1 and 3

  4. 3 and 4
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The corpus callosum is the primary structure connecting the two cerebral hemispheres in placental mammals. Monotremes like the echidna (Tachyglossus) and marsupials like the opossum (Didelphis) lack a true corpus callosum, having only a smaller anterior commissure.

Multiple choice basics of management of water environmental science conservation of resources food production: soil and water management biology

Freshwater protozoans react to a/an __________ environment by removing water through

  1. hypotonic, turgor pressure

  2. isotonic, a contractile vacuole

  3. hypertonic, a contractile vacuole

  4. hypotonic, a contractile vacuole
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Freshwater protozoans live in a hypotonic environment relative to their cytoplasm. Water enters by osmosis, and they use a contractile vacuole to expel excess water.

Multiple choice biology living world and classification of microbes pathogen and their mode of transmission economic importance of bacteria and fungi diseases and immunity five kingdoms of living organisms

What are plant-like protists collectively called?

  1. Protozoans

  2. Algae

  3. Fungi

  4. Pseudopodia
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation
The five kingdom classification was proposed by R. H. Whittaker which classifies all the living organisms into these five kingdoms. The Protista is a kingdom of simple single-celled eukaryotic organisms. They have well-developed cell organelles on the basis of which they have been classified into plant and animals like protists. The plant-like protists have chlorophyll, can perform photosynthesis and are collectively known as protists.
Thus, the correct answer is option B. 
Multiple choice biology living world and classification of microbes pathogen and their mode of transmission economic importance of bacteria and fungi diseases and immunity five kingdoms of living organisms

A group of biology students were studying about the algae. They prepared a sample slide using a water sample drawn from a puddle. While observing the sample under microscope, they noted that those were living in the colony and the colony was coated with a jelly-like substance. Using these hints identify the organism.

  1. Ulva

  2. Sargassum

  3. Volvox

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

Volvox is a freshwater green alga. It is found in multicellular colonies. These colonies are known as "coenobium". They also move together in colonies.

So, in this case, option C " Volvox" is the correct answer.

Multiple choice biology living world and classification of microbes pathogen and their mode of transmission economic importance of bacteria and fungi diseases and immunity five kingdoms of living organisms

Colourless, unicellular, cell wall bound, spherical or rod-shaped micro-organism lacking organized nucleus is called as

  1. Mycoplasma

  2. Virus

  3. Bacteria

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

According to five kingdom classification, bacteria are placed in kingdom monera. Organisms of kingdom monera are single celled and they have cell wall made up of peptidoglycans. Their nuclear membrane is absent, have single chromosome and do not have membrane bound cell organelles. DNA is double stranded and suspended in cytoplasm (called nucleoid).