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 means of respiration in the echinodermata is/are _________.

  1. gills

  2. papulae

  3. tuft-like gills

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

Respiration in the echinodermata (starfish and sea urchins) is carried out using a very primitive version of gills called papulae. These thin protuberances on the surface of the body contain diverticula of the water vascular system.

Multiple choice

Which of the following statements is/are false? a. Microorganisms may be unicellular or multicellular. b. Viruses feed, move and respire on their own. c. Bacteria is useful in making food, nitrogen fixation and decomposition of waste organic matter.

  1. Only a

  2. Only a and b

  3. Only b

  4. Only b and c

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

Viruses feed, move and respire on their own, is a wrong statement. Thus, it is the correct option. It is bacteria, who feed, move and respire on their own.

Multiple choice

Match the following:

 
a. Bacteria 1. are a group of single-celled microorganisms which are classified as animals.
b. Viruses 2. are very small, single-celled microorganisms which have cell walls but do not have organised nucleus and other structures.
c. Protozoa 3. are the smallest microorganisms which can develop only inside the cells of the host organisms.

  1. a - 2, b - 3, c - 1

  2. a - 2, b - 1, c - 3

  3. a - 1, b - 3, c - 2

  4. a - 1, b - 2, c - 3

  5. a - 3, b - 2, c - 1
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

This is the correct option. Bacteria are very small, single-celled microorganisms, which have cell walls but do not have organised nucleus and other structures. Viruses are the smallest microorganisms, which can develop only inside the cells of the host organisms. Protozoa are a group of single-celled microorganisms, which are classified as animals.

Multiple choice

Match the following:

 
a. Pathogens 1. are a large group of organisms, which do not have chlorophyll and do not photosynthesise.
b. Algae 2. are the disease causing microorganisms.
c. Fungi 3. is a large group of simple, plant-like organisms.

  1. a - 1, b - 3, c - 2

  2. a - 3, b - 1, c - 2

  3. a - 3, b - 2, c - 1

  4. a - 2, b - 3, c - 1

  5. a - 2, b - 1, c - 3
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

This is the correct option. Pathogens are the disease causing microorganisms. Algae is a large group of simple, plant-like organisms. Fungi are a large group of organisms, which do not have chlorophyll and do not photosynthesise.

Multiple choice

_____ is called false foot.

  1. Pseudoartistic

  2. Pseudocarp

  3. Pseudopodium

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

Pseudopodia (singular: pseudopodium) are temporary protrusions of the cytoplasm used by amoeboid cells for movement and feeding, literally meaning 'false feet'.

Multiple choice

Which of the following is not an adaptation of penguins?

  1. Penguins can close their nostrils while swimming.

  2. They have white fur.

  3. Penguins have a layer of fat under the feathery coat.

  4. Their feet have webs.

  5. They have streamlined body.
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

This is the correct option as this is not an adaptation of penguins.

Multiple choice

Animals develop adaptations for their survival. Which of the following is not an adaptation of the polar bear?

  1. The body has two thick layers of fur.

  2. Fur is white to protect the animal from predators.

  3. Polar bear can close its nostrils.

  4. Polar bear has webbed feet to help it in swimming.

  5. They have a strong sense of smell.
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

This is the correct option as polar bears do not have webbed feet. They have  wide and large paws to help it walk easily on snow.