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

Protists are useful in the various manners. Which among the following is not a use of protists?

  1. Primary producer of aquatic ecosystem

  2. Source of commercial products

  3. Source of medicines

  4. Source of mineral

  5. Source of biological pest control
Reveal answer Fill a bubble to check yourself
E Correct answer
Explanation

Bacteria can also be used in the place of pesticides in the biological pest control. This commonly uses Bacillus thuringiensis (also called BT), a Gram-positive, soil dwelling bacterium. This bacteria is used as a Lepidopteran-specific insecticide under trade names such as Dipel and Thuricide.

Multiple choice

Which among the following can be excluded from the general characteristics of the kingdom Monera?

  1. The gram negative bacteria has an extra layer of glycol on the outside of the cell wall.

  2. Sexual reproduction is also seen in kingdom monera.

  3. Monerans may be obligate aerobes or obligate anaerobes .

  4. DNA is in double stranded form.

  5. The gram positive bacteria's cell wall is made up of protein-sugar complex.
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The gram negative bacteria have an extra layer of lipid on the outside of the cell wall and appear pink during the gram staining procedure.

Multiple choice

Which group of animals belong to the same phylum?

  1. Aurelia, Pennatula, Obelia, Planaria

  2. Fasciola, Planaria, Taenia, Echinococcus

  3. Pennatula, Obelia, Fasciola, Echinococcus

  4. Obelia, Planaria, Taenia, Echinococcus

  5. Aurelia, Fasciola, Pennatula, Obelia
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Correct answer. All are members of phylum Platyhelminthes. Fasciola belongs to class Trematoda of phylum Platyhelminthes. Planaria belongs to class Turbellaria of phylum Platyhelminthes. Taenia and Echinococcus belongs to class Cestoda of phylum Platyhelminthes.

Multiple choice

What are prokaryotes?

  1. The organisms having cells without nuclear membrane

  2. The organisms made of more than one cell

  3. The organisms having cells with a well-organised nucleus with a nuclear membrane

  4. The organisms that are single-celled

  5. None of these

Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The cells having nuclear material without nuclear membrane are termed as prokaryotic cells and the organisms with this kind of cells are called prokaryotes.

Multiple choice

Which of the following statements is/are false? a. The number of cells being less in an organism does affect the functioning of the small organisms. b. Staining of plant and animal specimens is done to identify the different components of a cell easily through a microscope. c. The organisms, which are made up of only one cell, are called unicellular organisms.

  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

The number of cells being less in an organism, does affect the functioning of the small organisms, is a false statement.  Thus, it is the correct option.