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

Parenchymal circulation is present in which of the following?

  1. Amoeba

  2. Fasciola

  3. Ascaris

  4. Sponges

  5. Amphioxus
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Coelom is absent in fasciola. Circulation occurs in space between internal walls. Its body contains a special tissue called parenchyma, which encloses a network of fluid filled spaces.

Multiple choice

Wheel animalcules are included in

  1. Ectoprocta

  2. Entoprocta

  3. Acanthocephala

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

Rotifera is a phylum of microscopic aquatic invertebrates, the wheel animalcules-widely distributed usually in fresh water.

Multiple choice

The body form of glass sponges is

  1. leuconoid

  2. asconoid

  3. syconoid

  4. asconoid and syconoid
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

 Glass sponges have leuconoid body form in which the interior is almost filled with mesohyl containing a network of chambers.

Multiple choice

Which of the following is true about sponges?

  1. They have a well developed nervous system.

  2. They are all sessile.

  3. They have a complex digestive system.

  4. They have a complex circulatory system.
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

 Sponges are sessile aquatic animals.

Multiple choice

Portuguese man-of-war is

  1. a colonial organism of phylum Echinodermata

  2. a true jellyfish from phylum Cnidaria

  3. a colonial organism of phylum Cnidaria

  4. it is a man eating octopus of phylum Mollusca
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

 Portuguese man-of-war belongs to phylum Cnidaria and is a colony of minute individuals called zooids.

Multiple choice

Mesoglea in Hydra is

  1. a non living substance that is filled between two epidermal layers

  2. a living substance between two layers of Hydra

  3. a specialised cell aiding in locomotion

  4. a bactericide recently discovered in Hydra
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Mesoglea is a gel like substance seperating the two body layers of Hydra.