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Animal World - 1

Description: Animal World - 1
Number of Questions: 15
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Tags: Animal World - 1 Phylogenetic Relationships Systematics and Classification of Animals Animal Diversity Distribution
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Presence of a bladder is the common feature of

  1. Teleostomi

  2. Agnathostomes

  3. Holocephali

  4. Elasmobranchii


Correct Option: A
Explanation:

Teleost fishes (bony fishes) have developed an air bladder attached to the digestive system. It helps to give buoyancy.

'Watermelon snow' is caused due to

  1. Trichodesmium

  2. Gonyulaux

  3. Chlamydomonas nivalis

  4. Red algae


Correct Option: C
Explanation:

It causes 'Red snow'. Its hypnospores consist of a red colour pigment, which gives the colour to snow.

Which of the following statements about protistan algae are incorrect? A. They are heterotrophic and one of the major components of phytoplanktons. B. They are only neustonic in nature. C. The cell is surrounded by a cell wall and possesses gelatinous matrix around the cell wall. D. Distinct chloroplasts are absent. E. Pyrenoids are present in protistan algae.

  1. A, B and D

  2. B, D and E

  3. A, B and E

  4. C, D and E


Correct Option: A
Explanation:

Statement A is not true because they are autotrophic. Statement B is not true because they are found in fresh water, marine water, benthic and neustonic regions. Statement D is not true because they have a distinct chloroplast for photosynthesis.

Which of the following is not a characteristic of the members of phylum annelida?

  1. Hydrostatic skeleton

  2. Segmentation

  3. Metanephridia

  4. Pseudocoelom


Correct Option: D

Which of the following statements is not correct?

  1. All sponges are exclusively marine.

  2. Amphiblastula is a landform of certain sponges.

  3. Calcareous and siliceous spicules are found in many sponges.

  4. All sponges are sessile.


Correct Option: A

Syncytial epidermis is found in

  1. hydra

  2. ascaris

  3. earthworm

  4. starfish


Correct Option: B

The group tetrapoda includes

  1. pisces, amphibia and reptiles

  2. pisces, reptiles and aves

  3. reptiles, aves and mammals

  4. amphibian, reptiles, aves and mammals


Correct Option: D
Explanation:

Tetrapoda is an informal grouping that includes vertebrate animals that have four limbs, i.e. amphibians, reptilies, aves and mammals.

Which of the following is a burrowing marsupial?

  1. Thylacerus

  2. Notoryctus

  3. Myrmecobius

  4. Phascolarctes


Correct Option: B

Echidna is

  1. a mammal which is a native of Africa

  2. a mammal which is a native of Australia

  3. a reptile which is a native of South America

  4. a reptile which is a native of Asia


Correct Option: D

Lateral line sensory organ is mainly a characteristic of

  1. aquatic reptiles

  2. aquatic birds

  3. fish

  4. aquatic mammals


Correct Option: C

Which of the following traits is not a characteristic of birds?

  1. Hollow bones

  2. Ectothermic

  3. Amniote egg

  4. Air sacs attached to lungs


Correct Option: B
Explanation:

Birds are not ectothermic. Animals, such as reptiles, fish or amphibians use environmental energy and behavioral adaptations to regulate their body temperature and are ectothermic. Birds and mammals are endothermic.

In which of the following groups are the flightless aquatic birds included?

  1. Rattitae

  2. Carenatae

  3. Impennae

  4. None of these


Correct Option: C
Explanation:

Flightless aquatic birds are included in super order – impennae; order – sphenisciformes. For example, penguins in southern hemisphere.

Mammary glands without teats are present in

  1. theria

  2. utheria

  3. metatheria

  4. prototheria


Correct Option: D

Physiological evidence through blood test reveals that turtles are more closely related to

  1. mammals than to crocodiles, lizards and mammals

  2. snakes than to crocodiles, lizards and mammals

  3. crocodiles than to lizards, snakes and mammals

  4. none of these


Correct Option: C
Explanation:

Physiological evidence through blood test reveals that turtles are more closely related to crocodiles than to lizards, snakes and mammals. The term turtle is usually used for aquatic or semiaquatic forms and resembles crocodiles in possession of  palate, immovable quadrate, protease, etc.

Which of the following combinations of phylum and description is incorrect?

  1. Echinodermata – bilaterial and radial symmetry, coelom from archenteron

  2. Nematode – roundworms, pseudocoelomate

  3. Cnidaria – radial symmetry, polyp and medusa body forms

  4. Porifera – gastrovascular cavity, coelomate


Correct Option: D
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