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

The synonym of handful is

Directions: Read the given passage carefully.

Dolphins live in saltwater but they can also live in freshwater locations. Only a handful of the species though are known to thrive in freshwater regions. They tend to stick to the shallow areas of the water found along the continental shelves.
Dolphins are regarded as the friendliest creatures in the sea and stories of them helping drowning sailors have been common since Roman times. The more we learn about dolphins, the more we realise that their society is more complex than people previously imagined. They look after other dolphins when they are ill, care for pregnant mothers and protect the weakest in the community, as we do. Some scientists have suggested that dolphins have a language but it is much more probable that they communicate with each other without needing words. Could any of these mammals be more intelligent than man? Certainly the most common argument in favour of man's superiority over them that we can kill them more easily than they can kill us is the least satisfactory. On the contrary, the more we discover about these remarkable creatures, the less we appear superior when we destroy them.

 

  1. many

  2. more

  3. a few

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

It means a very small number of people or things, (so few that they can fill a hand).

Multiple choice

What is osculum?

  1. The anus of hydra

  2. The aperture for water exit in sycon

  3. The pores in derma of sycon through which water enters

  4. The mouth of hydra

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

Osculum is the large aperture in a (sycon) sponge through which water is expelled.

Multiple choice

Wheel animalcules refers to

  1. platyhelminthes

  2. rotifers

  3. nematoda

  4. annelida

  5. mollusca
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

These are fresh water animals and smallest among metazoa. The presence of ciliary corona, the beating of which resembles a rotating wheel, which gives the name wheel animalcules.

Multiple choice

Mammals have a _____ chambered heart.

  1. 4

  2. 3

  3. 2

  4. 1
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Mammals, along with birds, possess a four-chambered heart, which allows for the complete separation of oxygenated and deoxygenated blood.

Multiple choice

Platypus differs from other mammals as it

  1. does not have mammary glands

  2. produces eggs

  3. lacks heart chambers

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

The platypus is a monotreme, a unique group of mammals that lay eggs instead of giving birth to live young, unlike the vast majority of mammals.