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

Mammals are similar to

  1. aves

  2. reptiles

  3. pisces

  4. All the above
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Mammals and Aves are warm blooded.

Multiple choice

Directions: Choose the word which is nearest in meaning to the phrase given below.

The simplest and the smallest form of plant life present in air, water and soil : essential to life but may cause diseases

  1. Virus

  2. Amoeba

  3. Bacteria

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

Bacteria are microscopic, single-celled organisms found everywhere that are essential to life but can also cause disease. Viruses are not technically considered plants or complete living cells in the same way.

Multiple choice

The filamentous bacteriophages are

  1. T2 phage, f1 phage and fd phage

  2. M13 phage, MS2 phage and f1 phage

  3. M13 phage, T12 phage and fd phage

  4. MS2 phage, T12 phage and f1 phage

  5. M13 phage, f1 phage and fd phage
Reveal answer Fill a bubble to check yourself
E Correct answer
Explanation

M13 is a filamentous bacteriophage composed of circular single stranded DNA (ssDNA). Filamentous bacteriophage fd is a type of filamentous bacteriophage known to infect Escherichia coli. Bacteriophage f1 is structurally classified as a class I filamentous phage.

Multiple choice

Which of the following statements is/are false?

a. The place where the living beings live is called their habitat. b. Same type of organisms are found in different types of habitats. c. The characteristics that make an animal better suited to its environment are called their adaptations.

  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

This is the correct option as this statement is false. Different types of organisms are found in different types of habitats. For example: The habitat of squirrels is usually trees, moles live under the ground, plants like cacti live in deserts and fishes like whales live in the ocean.

Multiple choice

Which of the following is not an adaptation of a lion?

  1. Eyes in the front

  2. Sharp teeth

  3. Claws that can be withdrawn inside

  4. Nostrils that can open and close

  5. Light brown colour to hide in the grasslands
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

This is the correct option. Lions do not have nostrils that can open and close.

Multiple choice

Which of the following statements is/are false?

a. Amoeba, yeast and bacteria are examples of multicellular organisms. b. Cells help in carrying out various functions like nutrition, respiration, excretion, etc. c. The process in which food is prepared by plants with the help of different elements is called photosynthesis.

  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
A Correct answer
Explanation

This is the correct option as this statement is false. Amoeba, yeast and bacteria are examples of unicellular organisms. They consist of only one cell.

Multiple choice

Camel has developed mechanisms that help it withstand severe heat and scarcity of water. Which of the following is not an adaptation of a camel?

  1. Long legs to keep heat away

  2. Their feet have large thin soles to walk in sand

  3. Ability to drink large quantity of water

  4. Ability to survive without food and water for many days

  5. No sweating
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

This is the correct option as this is not an adaptation of a camel. Camels have large thick soles for walking in sand.

Multiple choice

Which of the following is correct about cold blooded animals?

  1. Their blood remains cold all the time

  2. Their body temperature changes in accordance with the atmosphere

  3. Their body temperature remains constant all the time

  4. They kill all the animals they come across
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Cold-blooded animals, or ectotherms, rely on external environmental sources to regulate their body temperature. Consequently, their internal temperature fluctuates with the ambient temperature.

Multiple choice

Which of the following algae is used as a main source of agar agar?

  1. Gelidium

  2. Laminaria

  3. Chordrus

  4. Gloeopeltis

  5. Polysiphonia
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Gelidium is one of the main sources of agar agar thalli. It is a mucilage produced by the red algae and stored along with cellulose in cell wall. Agar agar is used as a base for culture media for fungi, bacteria and algae.

Multiple choice

Directions: During a field-trip some students of Model school visited an agricultural farm in Pathankot and saw a few birds eating earthworms. They enjoyed the scene and then they also started picking and killing the earthworms for pleasure. The farmer strongly objected and asked them to leave the field.

To which of the following phylum does earthworm belong?

  1. Phylum Arthropoda

  2. Phylum Mollusca

  3. Phylum Annelida

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

Earthworms belong to the phylum Annelida, which is characterized by segmented bodies.

Multiple choice

Directions: During a field-trip some students of Model school visited an agricultural farm in Pathankot and saw a few birds eating earthworms. They enjoyed the scene and then they also started picking and killing the earthworms for pleasure. The farmer strongly objected and asked them to leave the field.

Which of the following is a characteristic feature of the phylum to which the earthworms belong?

  1. Metameric segmentation

  2. Jointed legs

  3. Presence of shells

  4. Presence of notochord
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Metameric segmentation (the repetition of body parts) is a defining characteristic of the phylum Annelida.

Multiple choice

Directions: Vicky was playing volleyball in the ground with his friends. One of his friend, Himesh who was standing near the boundary felt something climbing upon his feet. Subsequently he started crying in pain. Vicky being a class IX student identified the climbing creature as leech and helped in removing the leech.

What kind of coelom does leech possess?

  1. True coelom

  2. Psedocoelom

  3. Acoelom

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

Leeches are annelids, and annelids possess a true coelom (a body cavity completely lined with mesoderm).