Biology ยท 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

Animals with jointed appendages belong to phylum

  1. Platyhelminthes

  2. Nematoda

  3. Annelida

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

Arthropoda literally means 'jointed feet' in Greek. This phylum is defined by jointed appendages, segmented bodies, and exoskeletons. It includes insects, arachnids, crustaceans, and myriapods.

Multiple choice

The most highly evolved organisms belong to the class

  1. Reptilia

  2. Amphibia

  3. Pisces

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

Mammals are considered the most recently evolved and complex vertebrate class. They possess advanced neural development, endothermy, complex social structures, and diverse adaptations. While all classes are evolved for their niches, mammals show the highest degree of encephalization.

Multiple choice

Which of the following is not a protochordate?

  1. Herdemania

  2. Balanoglossus

  3. Salamander

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

Protochordates include hemichordates (Balanoglossus), urochordates/tunicates (Herdemania), and cephalochordates (Amphioxus). These lack a true vertebral column. Salamander is an amphibian with fully developed vertebrae, making it a vertebrate, not a protochordate.

Multiple choice

Which of the following is a multicellular organism?

  1. Amoeba

  2. Yeast

  3. Human body

  4. Archaebacteria

  5. Eubacteria
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

This is the correct option. The human body is a multicellular organism as it is composed of more than 200 different kinds of cells.

Multiple choice

Which of the following correctly defines the term 'eutheria'?

  1. Egg laying mammals

  2. Quadruple mammals

  3. Pouched mammals

  4. Placental mammals

  5. Warm blooded mammals
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

'Eutheria' means placental mammals. The term 'eutheria' is derived from the fact that the embryo grows inside the uterus and is supplied with nutrients through placenta.