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

Which of the following use pseudopodia for moving?

  1. The ciliates

  2. Flagellates

  3. Amoeboids

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

Amoeboids are single-celled life-forms characterized by an irregular shape. Amoeboids move using pseudopodia, which are bulges of cytoplasm.

Multiple choice

Which of the following are the properties of bacteria?

  1. Bacteria have closed circle of double-stranded DNA.
  2. Bacteria have single chromosome without associated histones.
  3. Presence of mitosis
  4. Bacterial ribosomes have a sedimentation rate of 70S.
  5. Bacterial flagellin is "9 + 2" type.

  1. 1, 4 and 5

  2. 1, 2 and 4

  3. 2, 3 and 4

  4. 2, 3 and 5

  5. 3, 4 and 5
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Correct answer: 1. Bacteria have closed circle of double-stranded DNA. 2. Bacteria have single chromosome without associated histones. 4. Bacterial ribosomes have a sedimentation rate of 70S.

Multiple choice

Which of the following statements are false regarding ‘Fimbriae’?

P. Fimbriae are much smaller and thinner than flagella. Q. Fimbriae are found in non-motile forms of bacteria. R. Fimbriae help in the formation of hollow conjugation tube during conjugation. S. F-pili or sex pili occur in receptor bacteria having F− or fertility factor.

  1. P and Q

  2. P and R

  3. P and S

  4. Q and R

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

This is the correct answer because Q and S both are false statements. Correct statements are:

Q. Fimbriae are found in both motile and non-motile forms of bacteria. S. F-pili or sex pili occur in donor bacteria having F₊ or fertility factor.

Multiple choice

Which of the following statements are true regarding the domain archaea?

P. Cell membrane has ether-linked lipids and pseudopeptidoglycan. Q. Cell membrane has ester-linked lipids and peptidoglycan. R. Metabolism methods are methanogenesis and its various types. S. Metabolism methods are photosynthesis and cellular respiration.

  1. P and Q

  2. P and R

  3. P and S

  4. Q and R

  5. Q and S
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Correct answer because both P and R are true:

P. Cell membrane has ether-linked lipids and pseudopeptidoglycan. R. Metabolism methods are methanogenesis and its various types.