Questions
In which of the following organisms are organs not associated to form functional systems, with each system concerned with a specific physiological function?
- Annelids
- Arthropods
- Molluscs
- Porifera
- Echinoderms
Match the following:
| a. Sponges | 1. They exhibit organ level of organisation. |
| b. Coelenterates | 2. They exhibit cellular level of organisation. |
| c. Platyhelminthes | 3. They exhibit tissue level of organisation. |
- a - 1, b - 3, c - 2
- a - 2, b - 3, c - 1
- a - 3, b - 2, c - 1
- a - 1, b - 2, c - 3
- a - 2, b - 1, c - 3
The body of which of the following animals can be divided into identical left and right halves in only one plane?
a. Annelids
b. Coelenterates
c. Arthropods
d. Echinoderms
- Only a and b
- Only a and c
- Only a and d
- Only b and c
- Only b and d
In which of the following animals does the developing embryo have a third germinal layer in between the ectoderm and endoderm?
a. Platyhelminthes
b. Chordates
c. Coelenterates
- Only a and b
- Only a and c
- Only b
- Only b and c
- Only c
Which of the following organisms belong to the phylum Porifera?
a. Euspongia
b. Spongilla
c. Gorgonia
d. Meandrina
- Only a and b
- Only a and c
- Only a and d
- Only b and c
- Only c and d
Ctenophores, also known as comb jellies or sea walnuts, are exclusively marine organisms. Which of the following is not a property of Ctenophores?
- They are radially symmetrical organisms with tissue level of organisation.
- Their body bears four external rows of ciliated comb plates.
- Digestion is both extracellular and intracellular.
- Sexes are not separate in Ctenophores.
- Reproduction is only by sexual means.
Cnidarians exhibit two basic forms - polyp and medusa. Which of the following exhibit medusa form?
a. Hydra
b. Adamsia
c. Jellyfish
d. Aurelia
- Only a and b
- Only a and c
- Only a and d
- Only c and d
- Only b and c
Which of the following are bilaterally symmetrical, triploblastic endoparasites that are found in animals?
a. Taenia
b. Pleurobrachia
c. Ctenoplana
d. Fasciola
- Only b and c
- Only a and c
- Only a and d
- Only a and b
- Only b and d
Organisms of which of the following phyla have a water vascular system that helps in locomotion, capture and transport of food and respiration?
- Hemichordata
- Mollusca
- Echinodermata
- Chordata
- Annelida
In which of the organisms of class Reptilia is the heart four-chambered?
- Lizard
- Viper
- Cobra
- Tortoise
- Crocodile
Which of the following organisms have their body surface distinctly marked out into segments or metameres?
a. Nereis
b. Pheretima
c. Ancylostoma
d. Wuchereria
- Only a and b
- Only a and c
- Only a and d
- Only b and c
- Only c and d
Which of the following organisms are characterised by the presence of milk-producing glands by which the young ones are nourished?
a. Macropus
b. Equus
c. Corvus
d. Pavo
- Only a and c
- Only a and b
- Only a and d
- Only c and d
- Only b and c
Match the following:
| a. Urochordata | 1. In this subphyla, notochord is present during the embryonic period. |
| b. Cephalochordata | 2. In this subphyla, notochord extends from head to tail region and is persistent throughout the organism's life. |
| c. Vertebrata | 3. In this subphyla, notochord is present only in larval tail. |
- a - 1, b - 2, c - 3
- a - 3, b - 2, c - 1
- a - 2, b - 3, c - 1
- a - 2, b - 1, c - 3
- a - 3, b - 1, c - 2
Animals having coelom are called coelomates. Which of the following animals are not coelomates?
- Molluscs
- Arthropods
- Annelids
- Platyhelminthes
- Echinoderms
The organisms of which of the following classes can live in aquatic as well as in terrestrial habitats?
- Osteichthyes
- Chondrichthyes
- Cyclostomata
- Amphibia
- Reptilia
In which of the following phyla are sexes separate, i.e. males and females are distinct?
- Porifera
- Ctenophora
- Platyhelminthes
- Aschelminthes
- None of these
Match the following:
| a. Vectors | 1. Limulus |
| b. Gregarious pest | 2. Anopheles |
| c. Living fossil | 3. Locusta |
- a - 1, b - 2, c - 3
- a - 1, b - 3, c - 2
- a - 3, b - 2, c - 1
- a - 2, b - 3, c - 1
- a - 2, b - 1, c - 3
Arthropoda is the largest phylum of Animalia. Which of the following is not a property of organisms of phylum Arthropoda?
- The body of these organisms is covered by chitinous exoskeleton.
- Arthropods have an organ level of organisation.
- Respiratory organs like gills, book gills or tracheal system are absent.
- Sensory organs are present.
- Their body consists of head, thorax and abdomen.
Match the following:
| Class | Example |
| a. Cyclostomata | 1. Scoliodon |
| b. Chondrichthyes | 2. Petromyzon |
| c. Osteichthyes | 3. Exocoetus |
- a - 2, b - 1, c - 3
- a - 2, b - 3, c - 1
- a - 3, b - 2, c - 1
- a - 1, b - 2, c - 3
- a - 3, b - 1, c - 2
Cnidarians have tissue level of organisation and are diploblastic. Which of the following is not a Cnidarian?
- Obelia
- Pennatula
- Sycon
- Adamsia
- Physalia