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

Mycoplasmas are

  1. obligate parasites

  2. facultative parasites

  3. obligate saprophyte

  4. facultative saprophyte

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

Mycoplasma refers to a genus of bacteria that lack a cell wall. An obligate parasite is a parasitic organism that cannot complete its life cycle without exploiting a suitable host.

Multiple choice

Which of the following statements are true regarding annelids? P. Exclusively terrestrial, free living organisms Q. Bilaterally symmetrical, diploblastic, acoelomate organisms R. Blood vascular system is closed S. Nephridia are organs of excretion in the annelids Select the correct answer using codes given below:

  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

Blood vascular system is closed in annelids. Excretory system of annelids consists of coiled tubes, called nephridia.

Multiple choice

Which of the following groups of organisms is prokaryotic?

  1. Green algae, brown algae<font size="2"> and</font> red algae

  2. Yeasts and other fungi

  3. Mycoplasma, bacteria and cynobacteria

  4. Bacteria, yeast and virus
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The organisms that do not possess a well-defined nuclear membrane are called prokaryotes. For example, mycoplasma, bacteria and cyanobacteria.

Multiple choice

Which of the following can be excluded from the general characteristics of protista?

  1. The cell wall of red algae is made up of agar and carageenan.

  2. In brown algae, cell wall is made up of lignin and cellulose.

  3. Plant-like protists contains xanthophylls, phycobilins, and carotene.

  4. They are regarded as the true eukaryotes.

  5. They are either free-living or parasitic.
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

In brown algae, cell wall of algin and cellulose protects them against waves and exposure to air. This component ensures uniform freezing and melting of food items.