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 is correct about fungi?

  1. Heterotrophic eukaryotic organisms

  2. Cell walls made up of pectin

  3. Symbiotic relationship with gymnosperms

  4. Holophytic type of nutrition

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

Fungi are heterotrophic eukaryotic organisms. 

Multiple choice

How can a cat hear in all directions without moving its head?

  1. It can move its ear by an angle of 360o.

  2. It has four ears.

  3. It has 30 muscles in the ear.

  4. It can move its head by an angle of 360o.

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

Cats have amazing hearing ability. A cat's ear has 30 muscles that control the outer ear (by comparison, human ears only have six muscles). These muscles rotate 180o, so the cat can hear in all directions without moving its head.

Multiple choice

The term 'lichen' means

  1. green algae living inside fungi

  2. decomposition of dead matter

  3. absorption of nutrients by roots from the soil

  4. animals living as endo-parasites inside a host

  5. trapping of light energy for photosynthesis
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Green algae living inside fungi is termed lichen. The relationship is called symbiosis.

Multiple choice

Many marine invertebrates harbor endosymbiotic spherical algal cells within their tissues. These cells are called _______________.

  1. zooxanthelle

  2. lichens

  3. endosymbiont

  4. ectosymbiosis

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

Many marine invertebrates  (like sponges, jelly fish, sea anemones, corals, and ciliates) harbor endosymbiotic spherical algal cells called zooxanthelle within their tissues. The reef building corals satisfy most of their energy requirements using their zooxanthelle.

Multiple choice

Which algae uses paramylon as its primary storage product?

  1. Chrysophyta

  2. Pyrrhophyta

  3. Rhodophyta

  4. Euglenoids

  5. Chlorophyta
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Paramylon is the main storage product of euglenoids. Paramylon is a carbohydrate similar to starch. The chloroplasts found in Euglena contain chlorophyll, which aids in the synthesis of carbohydrates to be stored as starch granules and paramylon. Paramylon is made in the pyrenoids of Euglena. It is stored in rod-like bodies through out the cytoplasm, called paramylon bodies and are often visible as colourless or white particles in light microscopy.

Multiple choice

Which of the following is an unicellular motile green algae?

  1. Euglena

  2. Pyrodinium

  3. Chlamydomonas

  4. Chlorella

  5. Stoneworts
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Chlamydomonas is a single-celled alga about 10 micrometers in diameter that swims with two flagella. Flagella of Chlamydomonas are typical of eukaryotic cilia and flagella in that they are composed of micro tubules arranged in the well-documented 9 + 2 structure. They have two flagella of equal length at the anterior end by which they move rapidly in water.