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

Prokaryotes and eukaryotes both contain cytoplasm.

  1. true

  2. false
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Both prokaryotic and eukaryotic cells contain cytoplasm, which is the jelly-like substance that fills the interior of the cell and houses the organelles or cellular machinery.

Multiple choice

Which of the following is a feature of all chordates?

  1. Give birth to live young

  2. Possess hair

  3. Warm blooded

  4. Dorsal nerve cord
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

All chordates possess a dorsal hollow nerve cord at some stage of their development. Features like hair, warm-bloodedness, or live birth are specific to certain classes, such as mammals, not all chordates.

Multiple choice

Classify the following organisms (A-anemone, B-slug and C-sponge):

  1. A - Cnidaria; B - Arthropoda; C - Porifera

  2. A - Cnidaria; B - Mollusca; C - Porifera

  3. A - Mollusca; B - Arthropoda; C - Porifera

  4. A - Mollusca; B - Annelida; C - Porifera
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Anemones are Cnidaria, slugs are Mollusca, and sponges are Porifera. This matches the classification provided in option B.

Multiple choice

Classify the following organisms (A-crab, B-cuttlefish and C-earthworm):

  1. A - Annelida; B -Mollusca; C - Arthropoda

  2. A - Annelida; B -Cnidaria; C - Arthropoda

  3. A - Arthropoda; B -Cnidaria; C - Annelida

  4. A - Arthropoda; B -Mollusca; C - Annelida
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Crabs are Arthropoda, cuttlefish are Mollusca, and earthworms are Annelida. Option D correctly identifies these groups.

Multiple choice

Platyhelminthes are a unique phylum because they include:

  1. Unsegmented flatworms such as the parasitic tapeworm

  2. Unsegmented roundworms such as the parasitic tapeworm

  3. Segmented roundworms such as the parasitic tapeworm

  4. Segmented flatworms such as the parasitic tapeworm
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Platyhelminthes are flatworms characterized by their lack of body segments and a flattened body shape. Tapeworms are a classic example of this phylum.

Multiple choice

This spider is classified in which phylum?

  1. Mollusca

  2. Annelida

  3. Platyhelminthes

  4. Arthropoda
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Spiders have jointed legs and an exoskeleton, which are the primary defining characteristics of the phylum Arthropoda.

Multiple choice

This snail belongs to which phylum?

  1. Platyhelminthes

  2. Arthropoda

  3. Mollusca

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

Snails are soft-bodied invertebrates that typically possess a mantle and a muscular foot, placing them in the phylum Mollusca.

Multiple choice

Cnidaria have which of the following features?

  1. Contain pores

  2. Nematocysts

  3. Segmented bodies

  4. Jointed limbs
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Cnidarians are defined by specialized stinging cells called nematocysts, which they use for defense and capturing prey.