Home
Current Affairs January 2024

What is the correct answer?

4

Identify the correct characteristic feature shown by the given figure? 
akimg19

A. Diploblastic in nature.

B. Having radial symmetrical body.

C. Dioecious with direct development.

D. Presence of sensory tentacles on anterior head region.

Correct Answer :

D. Presence of sensory tentacles on anterior head region.


The given figure shows the examples of Mollusca. These animals are triploblastic and bilaterally symmetrical in nature. They are usually dioecious and oviparous with indirect development.

Related Questions

What is the correct answer?

4

Which of the following is not the common fundamental feature for animal classification?

A. Germinal layers.

B. Pathway of water transport.

C. Pattern of organization of cells.

D. Serial repetition of the segments.

What is the correct answer?

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.

What is the correct answer?

4

Which of the following phylum is being described by the given statements?
(i) These are primitive multicellular animals and have cellular level of organization.
(ii) Digestion is intracellular.
(iii) They have a water transport or canal system.
(iv) They reproduce asexually by fragmentation and sexually by formation of gametes.

A. Porifera

B. Ctenophora

C. Coelenterata

D. Platyhelminthes

What is the correct answer?

4

Which of the following is not a chordate character?

A. Presence of paired pharyngeal gill slits

B. Ventral heart

C. Solid and ventral nerve cord

D. Presence of post-anal tail

What is the correct answer?

4

Which of the following possesses electric organs and belongs to class chondrichthyes?

A. Torpedo

B. Petromyzon

C. Trygon

D. Exocoetus

What is the correct answer?

4

Which of the following is not a characteristic of phylum echinodermata ?

A. They have a water vascular system.

B. They have an internal skeleton.

C. They are protostomes.

D. They have bilateral symmetry at larval stage.

What is the correct answer?

4

Which of the following statements is incorrect ?

A. Prawn has two pairs of antennae.

B. Nematocysts are characteristic feature of the phylum cnidaria.

C. Millipedes have two pairs of appendages in each segment of the body.

D. Animals that belong to phylum porifera are exclusively marine.

What is the correct answer?

4

Which of the following statement(s) is/are correct regarding phylum mollusca?

A. They are bilaterally symmetrical, triploblastic and coelomate animals.

B. Body is covered by a calcareous shell and is unsegmented with a distinct head, muscular foot and visceral hump.

C. The mouth contains a file-like rasping organ for feeding, called radula.

D. All of the above

What is the correct answer?

4

Which one of the following categories of animals is correctly described with no single exception in it?

A. In chondrichthyes notochord is persistent throughout life.

B. All mammals are viviparous and possess diaphragm for breathing.

C. All sponges are marine.

D. All reptiles possess scales, have a three chambered heart and are cold blooded (poikilothermal).

What is the correct answer?

4

The figure given below is the characteristic structure of the phylum in which animals are aquatic, free swimming or sessile, mostly marine, radially symmetrical. Identify the phylum and correct function of the structure. 
akimg15

A. Ctenophora; Emission of light.

B. Porifera; Feeding, respiration and excretion.

C. Cnidarian; Anchorage, Defense and food capturing

D. Mollusca; Locomotion, transport of food and respiration.

What is the correct answer?

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

What is the correct answer?

4

Which of the following pairs of animals comprises jawless fishes?

A. Mackerals and rohu

B. Lampreys and hag fishes

C. Guppies and hag fishes

D. Lampreys and eels

What is the correct answer?

4

Which of the following features distinguish mammals from other vertebrates ?

A. Hairy skin and oviparity

B. Hairy skin and mammary glands

C. Mammary glands and teeth

D. Pinna and teeth

What is the correct answer?

4

Which of the following group of animals belongs to the same phylum?

A. Earthworm, pinworm, tapeworm

B. Prawn, scorpion, Locusta

C. Sponge, Sea anemone, starfish

D. Malarial parasite, Amoeba, mosquito

What is the correct answer?

4

Which of the following possesses poison sting and belongs to class chondrichthyes?

A. Labeo

B. Myxine

C. Clarias

D. Trygon

What is the correct answer?

4

Match the phylum given in column - I with their example given in column - II and choose the correct option.
Column -IColumn- II
(Phylum)(Examples)
A. EchinodermataI. Ascidia, Doliolum
B. HemichordataII. Asterias, Ophiura
C. UrochordataIII. Branchiostoma
D. CephalochordataIV. Balanoglossus, Saccoglossus

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

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

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

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

What is the correct answer?

4

Which of the following phylum is being described by the given statements?
(i) They are bilaterally symmetrical,triploblastic, segmented and coelomate animals.
(ii) The body consists of head, thorax, abdomen and have jointed appendages.
(iii) Circulatory system is of open type.
(iv) Excretion takes place through malphigian tubules.

A. Arthropoda

B. Annelida

C. Mollusca

D. Echinodermata

What is the correct answer?

4

A common characteristic of all vertebrates without exception is

A. the division of body into head, neck, trunk and tail.

B. body covered with exoskeleton.

C. the possession of two pairs of functional appendages.

D. the presence of well- developed skull.

What is the correct answer?

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

What is the correct answer?

4

Which of the following is a living fossil?

A. Balanoglossus

B. Echinus

C. Ancylostoma

D. Limulus

What is the correct answer?

4

Hemichordates have now been placed with the nonchordates, close to echinoderms, because true

A. notochord is absent.

B. pharyngeal gill-slits are lacking.

C. dorsal nerve cord is absent.

D. heart is lacking.

What is the correct answer?

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

What is the correct answer?

4

Which of the following animal's body is covered by calcareous shell and unsegmented with a distinct head, muscular foot, and visceral hump? 
akimg17

A. Click to check answer

B. Click to check answer

C. Click to check answer

D. Click to check answer

What is the correct answer?

4

Refer the types of cells present in some animals. Each cell is specialized to perform a single specific function except

A. Cnidocytes

B. Choanocytes

C. Interstitial cells

D. Gastrodermal cells

What is the correct answer?

4

Which of the following statements (i - v) are correct ?
(i) The pelvic fins of female sharks bear claspers.
(ii) In Obelia, polyps produce medusae sexually and medusae form the polyps asexually.
(iii) Flame cells in platyhelminthes help in osmoregulation and excretion.
(iv) In non-chordates, central nervous system is ventral, solid and double.
(v) Pinnae are present in mammals.

A. (ii), (iv) and (v)

B. (i), (iii) and (v)

C. (iii), (iv) and (v)

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

What is the correct answer?

4

Polyp phase is absent in

A. Hydra

B. Aurelia

C. Physalia

D. Obelia

What is the correct answer?

4

Column-I contains organisms and column-II contains their exeretory structures. Choose the correct match form the options given below.
Column- IColumn -II
(Organism)(Excretory structures)
A. CockroachI. Nephridia
B. Cat fishII. Malpighian tubules
C. EarthwormIII. Kidneys
D. BalanoglossusIV. Flame cells
E. FlatwormV. Proboscis gland

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

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

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

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

What is the correct answer?

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.

What is the correct answer?

4

A student was given a specimen to identify on the basis of the characteristics given below.
(i) They are metamerically segmented.
(ii) Presence of closed circulatory system.
(iii) They have circular and longitudinal muscles for locomotion. Identify the specimen.

A. Prawn

B. Pheretima

C. Wuchereria

D. Ctenoplana

What is the correct answer?

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.