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4

In which of the phylum, excretory organ like proboscis gland is present?

A. Hemichordata

B. Chordata

C. Echinodermata

D. Annelida

Correct Answer :

A. Hemichordata


Phylum hemichordata consists of a small group of worm-like marine animals with organ system level of organization. They are bilaterally symmetrical, triploblastic and coelomate animals. Excretion takes place through proboscis gland.

Related Questions

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4

The organisms attached to the substratum generally possess

A. one single opening to the digestive canal.

B. cilia on the surface to create water current.

C. radial symmetry.

D. asymmetrical body.

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4

Which of the following animals are bilaterally symmetrical?
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A. 1 & 2

B. 2 & 4

C. 3 & 4

D. 1 & 3

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4

In which of the phylum, excretory organ like proboscis gland is present?

A. Hemichordata

B. Chordata

C. Echinodermata

D. Annelida

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4

Which of the following statement(s) is/are correct for class amphibia?
(i) Body is divisible into head and trunk.
(ii) Respiration is through gills only.
(iii) The heart is two chambered i.e. one auricle and one ventricle.
(iv) Fertilization is internal.

A. Only (i)

B. Only (iv)

C. (i), (ii) and (iii)

D. All of these

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4

Select the incorrect feature of mollusca from the given statements.

  1. Terrestrial or aquatic animals having cellular system level of organization.

  2. Radial symmetrical and acoelomate animals and possesses two germinal layers.

  3. A file like rasping organ called radula is present.

  4. Usually dioecious and viviparous animals.

  5. Examples include Pila, Octopus, and Dentalium.

A. (i) and (ii) only

B. (ii) and (iv) only

C. (i), (ii) and (iv) only

D. All the five statements.

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4

Which of the following statements is without exception in sponges ?

A. They all have calcareous spicules.

B. They have high regenerative power.

C. They are found only in marine water.

D. They are all radially symmetrical.

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4

Which of the following is not a characteristic feature of kingdom animalia ?

A. Storage of carbohydrates as starch.

B. Multicellularity.

C. Obtaining nutrients by ingestion.

D. Having eukaryotic cells without walls.

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4

Polyp phase is absent in

A. Hydra

B. Aurelia

C. Physalia

D. Obelia

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4

The given figures A, B, C and D are the examples of first true land vertebrates. They are dominant in mesozoic era and belong to phylum ‘X’. Identify ‘X’ and the animals which have four chambered heart. 
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A. X – Reptile; B

B. X – Reptile; A

C. X – Amphibia, C

D. X – Pisces; D

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4

Refer the following animals and identify those which have a fluid filled body cavity with a complete lining derived from mesoderm.
(i) Sycon (ii) Butterfly
(iii) Nereis (iv) Sea fan
(v) Scorpion (vi) Pila

A. (i) and (iii) only

B. (ii) and (iv) only

C. (ii), (iii), (v) and (vi) only

D. All of these

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4

Which of the following characteristic distinguish arthropoda from annelids and molluscs ?

A. An external skeleton made of chitin (a polysaccharide) and protein rather than a shell made chiefly of mineral salts.

B. Subdivision of the legs into movable segments.

C. Distinct group of muscles, derived from many body segments, that move the separate parts of the exoskeleton.

D. All of the above

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4

The combination of a true coelom and repeating body segmentation allows the annelids (unlike the anatomically simpler worms) to do which of the following?

A. Attain complex body shapes and thus locomote more precisely.

B. Move through loose marine sediments.

C. Be hermaphroditic.

D. Inject paralytic poisons into their prey.

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4

Which of the following feature is not correct regarding the figure given below? 
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A. It is an aquatic form.

B. Circulatory system is of open type.

C. It possesses parapodia for swimming.

D. Neural system consists of paired ganglia connected by lateral nerves to a double ventral nerve cord.

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4

Which one of the following features is common in silverfish, scorpion, dragonfly and prawn?

A. Three pairs of legs and segmented body.

B. Chitinous cuticle and two pairs of antennae.

C. Jointed appendages and chitinous exoskeleton.

D. Cephalothorax and tracheae.

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4

When any plane passing through the central axis of the body divides the organism into two identical halves, the organism is called ___________.

A. radially symmetrical

B. bilaterally symmetrical

C. asymmetrical

D. metamerically segmented

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4

A student brought home a strange animal which he found outside under a rock. It had moist skin, a complete digestive tract, a ventral nerve cord, and had gone through torsion. Identify the phylum of the animal.

A. Porifera

B. Annelida

C. Mollusca

D. Echinodermata

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4

The given figures (A & B) shows the germinal layer. The animals having structures shown in the figures are respectively called 
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A. diploblastic, triploblastic

B. triploblastic, diploblastic

C. diploblastic, diploblastic

D. triploblastic, triploblastic

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4

Which of the following statement(s) is/are correct regarding class aves?
(i) The forelimbs are modified into wings and the hindlimbs generally have scales and are modified for walking, swimming or clasping the tree branches.
(ii) Heart is completely four-chambered.
(iii) They are warm- blooded (homoiothermous) animals i.e., they are able to maintain a constant body temperature.
(iv) They are oviparous and development is direct.

A. Both (i) and (iii)

B. Both (i) and (iv)

C. (i), (ii) and (iii)

D. All of these

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4

Which of the following is a poisonous snake?

A. Naja (Cobra)

B. Bangarus (Krait)

C. Viper (Viper)

D. All of these

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4

Which of the following character is absent in all chordates?

A. Diaphragm

B. Coelom

C. Pharyngeal gill clefts

D. Dorsal nerve cord

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4

__________ is responsible for maintaining the current of water in sponge.

A. Osculum

B. Porocytes

C. Spongocoel

D. Choanocytes

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4

A file like rasping organ for feeding, called radula, present in the phylum __________.

A. arthropoda

B. mollusca

C. echinodermata

D. chordata

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4

Which of the following class is being described by the given statements (i - iv)?
(i) They are found in a variety of habitats- polar ice-caps, deserts, mountains, forests, grasslands and dark caves.
(ii) Most unique mammalian characteristic is the presence of mammary glands by which the young ones are nourished.
(iii) Heart is four-chambered.
(iv) Sexes are separate and fertilization is internal.

A. Reptilia

B. Aves

C. Mammalia

D. Amphibia

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4

Meandrina (brain coral) belongs to phylum

A. porifera

B. coelenterata

C. ctenophora

D. platyhelminthes

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4

Which of the following group of animals reproduces only by sexual means?

A. Ctenophora

B. Cnidaria

C. Porifera

D. Protozoa

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4

Identify the correct characteristic feature shown by the given figure? 
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A. Diploblastic in nature.

B. Having radial symmetrical body.

C. Dioecious with direct development.

D. Presence of sensory tentacles on anterior head region.

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Which of the following is a chordate feature and not shared by the non-chordates ?

A. Metamerism

B. Axial organization

C. Bilateral symmetry

D. Pharyngeal gill slits

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4

Which of the following characteristic is probably most responsible for the great diversification of insects on land ?

A. Segmentation

B. Antennae

C. Bilateral symmetry

D. Exoskeleton

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4

Which of the following statement(s) is/are correct?
(i) Animals in which the cells are arranged in two embryonic layers, an external ectoderm and an internal endoderm, are called diploblastic animals.
(ii) Notochord is an ectodermally derived rod like structure formed on the ventral side during embryonic development in some animals.
(iii) In some animals, the body cavity is not lined by mesoderm, instead, the mesoderm is present as scattered pouches in between the ectoderm and endoderm and such a body cavity is called pseudocoelom.

A. Only (i)

B. Both (i) and (ii)

C. Both (i) and (iii)

D. All of these

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4

Match the characteristic feature/terms given in column I with the phylum to which they belongs given in column II and choose the correct option.
Column-IColumn-II
(Characteristic feature/term)(Phylum)
A. ChoanocytesI. Platyhelminthes
B. CnidoblastsII. Ctenophora
C. Flame cellsIII. Porifera
D. NephridiaIV. Coelenterata
E. Comb platesV. Annelida

A. A II; B I; C IV; D V; E III

B. A II; B IV; C I; D V; E III

C. A V; B I; C III; D II; E IV

D. A III; B IV; C I; D V; E II