Biology · 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

Which of the following characteristics is/are exhibited by living organisms?

  1. Reproduction

  2. Growth

  3. Ability to sense environment

  4. Ability to mount a suitable response

  5. All of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

This is the correct option as all of the above are the characteristics that are exhibited by living organisms. This is the correct option as all of the above are the characteristics that are exhibited by living organisms.

Multiple choice

Which of the following statements is/are false?

a. Potato and brinjal are two different species, but both belong to the genus Solanum. b. Families are characterised on the reproductive features of plant species. c. Human beings belong to the species sapiens, which is grouped in the genus Homo.

  1. Only a

  2. Only a and b

  3. Only b

  4. Both 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. Families are characterised on the basis of both vegetative and reproductive features of plant species.

Multiple choice

What is algae?

  1. A large group of non-flowering plants lacking stem, flowers and leaves.

  2. A group of unicelluar, multicelluar organisms feeding on organic matter.

  3. A free living organisms with diverse nutritional and reproductive mode.

  4. A group of single celled microscopic animals, which includes amoeba.

  5. None of these
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

This is called algae.

Multiple choice

From the given statements, identify the incorrect one.

  1. Growth is not a defining property of living organisms.

  2. Reproduction is not an all-inclusive defining characteristic of living organisms.

  3. Cellular organisation of the body is the defining feature of life forms.

  4. Consciousness is not a defining property of living organisms.

  5. Living organisms are self-replicating, evolving and self-regulating interactive systems capable of responding to external stimuli.
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Consciousness is a defining property of living organisms.

Multiple choice

Identify the incorrect statements from the following:

  1. Increase in mass and increase in number of individuals are twin characteristics of growth.
  2. A multicellular organism grows by cell division.
  3. In plants, this growth by cell division occurs continuously throughout their life span. In animals, this growth is seen only up to a certain age.
  4. Non-living objects also grow if we take increase in body mass as a criterion for growth. Mountains, boulders and sand mounds do grow.
  5. In non-living organisms, growth is from inside.
  6. Growth can be taken as a defining property of living organisms.

  1. 1 and 2

  2. 4 and 6

  3. 2 and 4

  4. 5 and 6

  5. 2 and 6
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

In non-living organisms, growth is from outside. Growth cannot be taken as a defining property of living organisms. Statements 5 and 6 are incorrect.

Multiple choice

Which of the following statements regarding prokaryotic extracellular appendages are TRUE? P. Bacterial glycocalyx is located inside the cell wall. Q. Bacterial capsule is a well organized bacterial glycocalyx. R. F pili is involved in transferring DNA from one bacterium to another. S. Fimbriae help bacteria to attach to the other structures.

  1. P and Q

  2. P and R

  3. Q and R

  4. Q and S

  5. Q, R and S
Reveal answer Fill a bubble to check yourself
E Correct answer
Explanation

Bacterial capsule is a well organized bacterial glycocalyx that is firmly attached to the bacterial cell wall. F (conjugation, sex) pili are involved in the transfer of plasmids from one bacteria to the other. Fimbriae are short pili found in large numbers and used to attach bacteria to surfaces.

Multiple choice

Which of the following statements are TRUE regarding bacteria? P. The bacterial cell wall is composed of chitin. Q. The cytoplasm of a bacterium is supported by microtubules. R. A gram-positive bacterium is stained purple by the gram stain. S. Bacterial flagella propel the cell by using a rotating motion.

  1. P and Q

  2. P and R

  3. Q and R

  4. Q and S

  5. R and S
Reveal answer Fill a bubble to check yourself
E Correct answer
Explanation

Both are true statements. A gram-positive bacterium is stained purple by the gram stain. Bacterial flagella propel the cell by using a rotating motion.

Multiple choice

Which of the following sets represent fruiting myxobacteria only?

  1. Cystobacter, Melittangium, Polyangium

  2. Cytophyga, Flexibacter, Sporocytophaga

  3. Flexibacter, Melittangium, Sporocytophaga

  4. Cytophyga, Cystobacter, Polyangium

  5. Cystobacter, Flexibacter, Sporocytophaga
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Cystobacter, Melittangium, Polyangium: All are fruiting myxobacteria.