MCQ on Phylum Echinodermata for NEET
NEET Biology MCQ on Phylum Echinodermata with Answers by Expert Teacher. Every Questions is Important and Common for NEET-UG Exam.
1.) Echinodermata refers to:
a) Soft skin
b) Spiny skin
c) Scaly skin
d) Hard skin
2.) What is the most distinctive feature of Echinodermata?
a) Water vascular system
b) Indirect development
c) Monoecious
d) Digestive system
3.) Most of the echinoderms use …………………………………………………………………………… for locomotion.
a) Tail
b) Small millipedes
c) Jointed appendages
d) Tube feet
4.) Which type of excretory system is present in Echinodermata?
a) Malpighian tubule
b) Flame cells
c) Water canal
d) No excretory system
5.) Name the organism which has the following type of body form in the Echinoderms.
a) Sea cucumber
b) Sea star
c) Se lilies
d) Sea Urchins
6.) The type of symmetry present in starfish is:
a) Bilateral
b) Radial
c) Asymmetry
d) No symmetry
7.) An organism that has five arms and a mouth that is directed downward. The organism belongs to the class Asteroidea. Identify the organism:
a) Sea lilies
b) Feather stars
c) Starfish
d) Sea cucumber
8.) Water vascular system is present in:
a) Salpa
b) Sepia
c) Pteropus
d) Asterias
9.) Which of the following are known as the most primitive of the Echinoderms?
a) Crinoidea
b) Asteroidea
c) Echinoidea
d)Holothuroidea
10.) Tympanum is not present in:
a) Ostrich
b) Rana
c) Limbless amphibia
d) Ichthyophis
11.) Sea urchins have:
a) Five arms
b) Movable spines
c) Central disk
d) Longer legs
12.) Endoskeleton of echinoderms is:
a) Tunicin
b) Chitinous
c) Calcareous
d) Silicaceous
13.) Which of the following classes represents Sand dollars?
a) Class Echinodermata
b) Class Asteroidea
c) Class Annelida
d) Class nematode
14.) In echinoderms the mouth is present on……………………………………………………………………………. side and the anus is present in …………………………………………………………………. side.
a) Ventral, dorsal
b) Dorsal, Ventral
c) Upper, Lower
d) Upper ventral, lower dorsal
15.) Choose the INCORRECT pair from the following.
a) Sea cucumber→ Five arms with an equal share of organ
b) Sea star→ Centre of oral surface contains mouth
c) Sea urchin→ Pedicellarie
d) Brittle star→ Thinner legs
16.) Spine, arms, and pedicellariae are not present in which echinoderm?
a) Sea urchin
b) Sea lily
c) Starfish
d) Sea cucumber
17.) Which of the following is a characteristic of the Phylum Echinodermata?
a) Hard exoskeleton
b) Segmented body
c) Presence of tentacles
d) Recycling nutrients
18.) Match the following:
i) Adult echinoderm a) Locomotion
ii) Echinus b) Radial symmetry
iii) Water vascular system c) Sea urchin
a) i)-c), ii)-a), iii)-b)
b) i)-a), ii)-b), iii)-c)
c) i)-b), ii)-c), iii)-a)
d) i)-b), ii)-a), iii)-c)
19.) When an organism of Echinodermata loses an arm, regeneration takes place. The reproduction is:
a) Sexual
b) Vegetative Reproduction
c) Asexual
d) Gametogenesis
20.) The following statements are correct except:
a) Fertilization is external in echinoderms
b) Development is indirect
c) Sea lily is an echinoderm
d) Echinoderms have a calcareous exoskeleton
21.) Which part of the following is absent in the Echinoderms?
a) Tube feet
b) Mouth
c) Nerve cords
d) Brain
22.) The name for locomotory organs in echinoderms is …………………………………………………………………………………..
a) Pseudopodia
b) False feet
c) Tube feet
d) Setae
23.) Which is the INCORRECT match from the following:
Column A Column B
A.) Microscopic pigment → i) Aristotle’s Latern
B.) Tube feet → ii) Ambulacral groove
C.) Bumps for spines → iii) Interambulacral
a) Only A and i)
b) Only B and ii)
c) Only C and iii)
d) All of them
24.) Which Echinodermata can live in terrestrial places?
a) Sea Lilly
b) Brittle star
c) Starfish
d) None of the above
25.) A portion of the stomach of brittle star everts out of their mouth to:
a) Digest tube feet
b) Engulf food
c) Regenerate arm
d) Move food
26.) The mode of nutrition in Asterias is …………………………………………………………………………………….
a) Carnivore
b) Herbivore
c) Omnivore
d) Filter feeders
Answers:
1.)
Solution: b) Spiny skin
The organisms of Echinodermata are radically symmetrical. In the phylum Echinodermata, ‘Echino’ means spiny and ‘derm’ means skin.
2.)
Solution: a) Water vascular system
The water vascular system helps in the transport of food, respiration, and also in locomotion.
3.)
Solution: d) Tube feet
The tube feet help echinoderms in their locomotion. The organisms of echinoderm move slowly.
4.)
Solution: d) No excretory system
The excretory system is absent in Echinodermata.
5.)
Solution: a) Sea cucumber
The given image shows Holothuroidea’s body form. Sea cucumbers bear this type of body form.
6.)
Solution: b) Radial
Starfish have radial symmetry which divides the body into two identical halves.
7.)
Solution: c) Starfish
The sea star is also referred to as Starfish. Starfish belong to the class Asteroidea. Starfish have five arms and centrally located mouths.
8.)
Solution: d) Asterias
The water vascular system helps in locomotion, the capture of food, and the transport of food in Asterias.
9.)
Solution: a) Crinoidea
Organisms of the class Crinoidea are known as the most primitive of the Echinoderms. The organisms of Crinoidea have a number of arms and pinnules. Examples are Feather stars and Sea lilies.
10.)
Solution: a) Ostrich
Ostriches have ears as openings to the outside due to which they have the great hearing ability but the tympanum is absent in them.
11.)
Solution: b) Movable spines
The sea urchin’s body is usually round in shape and possesses a rigid body. They also have movable spins.
12.)
Solution: c) Calcareous
The endoskeleton of echinoderms is made up of calcium carbonate which is called calcareous ossicles which gives them a spiny body look hence the name echinoderms.
13.)
Solution: a) Class Echinodermata
Sea urchins and sand dollars both are examples of class Echinodermata because they have spines. Sometimes they also have venom.
14.)
Solution: a) Ventral, dorsal
The digestive system of echinoderms is complete and possesses a mouth on the lower ventral side whereas anus on the upper dorsal side.
15.)
Solution: a) Sea cucumber→ Five arms with an equal share of organs.
This is the INCORRECT pair. Sea cucumbers have a body plan which is similar to sea urchins. The Sea star contains five arms that share equal organs.
16.)
Solution: d) Sea cucumber
Sea cucumber lacks a spine, arms, and pedicellariae whereas starfish, seas lily and sea urchins possess these organs.
17.)
Solution: d) Recycling nutrients
Organisms of Echinodermata include a radially symmetrical body. The ecological role of these organisms includes controlling populations and nutrient recycling. Antiviral and Anticancer.
18.)
Solution: c) i)-b), ii)-c), iii)-a)
Adult echinoderms have radial symmetry whereas larvae echinoderms have bilateral symmetry. Echinus is the scientific name for sea urchin. The water vascular system is a characteristic feature of echinoderms that helps in the capture of food and also in locomotion.
19.)
Solution: c) Asexual
Asexual type reproduction includes processes like budding, vegetative reproduction, fragmentation, and binary fission. Also, it includes regeneration where the lost arm regenerates.
20.)
Solution: d) Echinoderms have a calcareous exoskeleton.
They possess only the endoskeleton. There is no exoskeleton present on echinoderms hence option d is incorrect.
21.)
Solution: d) Brain
Organisms of echinoderm have a mouth, skin gills, tube feet, anus, and nerve cords. The brain is the only part absent in the organism.
22.)
Solution: c) Tube feet
Tube feet are present on the oral side of echinoderms which helps in the exchange of gases, locomotion, and feeding.
23.)
Solution: a) Only A and i)
Sea star contains microscopic pigment spots which are helpful in the dark. The microscopic pigment spot is Ocelli.
24.)
Solution: d) None of the above
All echinoderms live and thrive in aquatic environments none of them were ever found in the terrestrial niches.
25.)
Solution: b) Engulf food
Both the organisms, sea stars and brittle stars have a portion of their stomach which they can evert out of their mouth to engulf food.
26.)
Solution: a) Carnivore
Asterias is a carnivore that feeds upon worms, small-sized starfish, snails, fishes and crustaceans and etc.