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NEET • BIOLOGY • ANIMAL KINGDOM
Animal kingdom practice · Mixed difficulty
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Showing 151-176 of 176 questions
151
Medium
151 of 176
Understanding
+4 | -1
In contrast to annelids, the Platyhelminthes show
View answer and explanation
Correct option: D
Absence of body cavity
Option D (Absence of body cavity) is correct because Platyhelminthes are acoelomates, lacking a body cavity, while annelids are coelomates.
152
Hard
152 of 176
Remembering
+4 | -1
A list of animals is given below. Identify the animals with open circulatory system and choose the correct answer
I.Ascidia
II.Cockroach
III.Earthworm
IV.Prawn
V.Silverfish
VI.Snail
VII.Squid
I.Ascidia
II.Cockroach
III.Earthworm
IV.Prawn
V.Silverfish
VI.Snail
VII.Squid
View answer and explanation
Correct option: D
II, IV, V and VI
Option D (II, IV, V and VI) is correct because Cockroach, Prawn, Silverfish, and Snail all have open circulatory systems.
153
Easy
153 of 176
Analyzing
+4 | -1
Find the odd one out
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Correct option: D
Sea horse
Option D (Sea horse) is the odd one out because it is a fish, while the others are cnidarians.
154
Hard
154 of 176
Understanding
+4 | -1
Coelom is important because
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Correct option: D
All of the above
Option D (All of the above) is correct because the coelom allows internal organ growth, separates the gut from the body wall muscles, and has evolutionary significance.
155
Medium
155 of 176
Remembering
+4 | -1
Collar cells are characteristic of
View answer and explanation
Correct option: D
Sponges
Option D (Sponges) is correct because collar cells (choanocytes) are unique and characteristic cells found in sponges.
156
Hard
156 of 176
Understanding
+4 | -1
Pick the odd pair out
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Correct option: B
Tissue level: Aschelminthes
Option B (Tissue level: Aschelminthes) is the odd pair because Aschelminthes (roundworms) have an organ-system level of organization, not a tissue level.
157
Easy
157 of 176
Remembering
+4 | -1
Classification of sponges is primarily based on the
View answer and explanation
Correct option: C
Skeleton
Option C (Skeleton) is correct because the classification of sponges is primarily based on the type of skeletal elements (spicules) they possess.
158
Medium
158 of 176
Understanding
+4 | -1
Why not poriferans evolved into tissue grade organisation
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Correct option: D
1 and 2
Option D (1 and 2) is correct because the absence of neurons and sensory cells prevents the formation of tissues and organs in Porifera.
159
Easy
159 of 176
Remembering
+4 | -1
Which of the following phylum or class exhibit the presence of a notochord?
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Correct option: C
Fishes
Option C (Fishes) is correct because fishes belong to the phylum Chordata, which is characterized by the presence of a notochord at some stage in their development.
160
Easy
160 of 176
Understanding
+4 | -1
Choose the correct match
View answer and explanation
Correct option: A
Porifera – A symmetrical
Option A (Porifera – A symmetrical) is correct because Porifera are generally asymmetrical organisms.
161
Easy
161 of 176
Understanding
+4 | -1
Which of the following is wrongly matched?
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Correct option: B
Annelida – Hydra
Option B (Annelida – Hydra) is correct because Hydra belongs to the phylum Cnidaria, not Annelida. Annelida consists of segmented worms.
162
Hard
162 of 176
Understanding
+4 | -1
Why water canal system present only in poriferans
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Correct option: D
These are immovable
Option D (These are immovable) is correct because the water canal system in poriferans is essential for filter feeding and gas exchange since they are sessile (immovable).
163
Easy
163 of 176
Remembering
+4 | -1
Body cavity lined by mesoderm is called
View answer and explanation
Correct option: C
Coelom
Option C (Coelom) is correct because the coelom is defined as a body cavity that is lined by mesoderm.
164
Hard
164 of 176
Remembering
+4 | -1
Phylum-Ctenophora is divided into following classes
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Correct option: C
Tentaculata and Nuda
Option C (Tentaculata and Nuda) is correct because the phylum Ctenophora is divided into two classes: Tentaculata, which possess tentacles, and Nuda, which lack tentacles.
165
Medium
165 of 176
Analyzing
+4 | -1
Which of the these statements are wrong?
I. Parapodia are lateral appendages in arthropods used for swimming.
II. Radula in molluscs are structures involved in excretion.
III.Aschelminthes are dioecious.
IV. Echinoderm adults show radial symmetry
V.Ctenophorans are diploblastic
I. Parapodia are lateral appendages in arthropods used for swimming.
II. Radula in molluscs are structures involved in excretion.
III.Aschelminthes are dioecious.
IV. Echinoderm adults show radial symmetry
V.Ctenophorans are diploblastic
View answer and explanation
Correct option: A
I and II
Option A (I and II) is correct because parapodia are lateral appendages in annelids, not arthropods, and radula in molluscs are structures involved in feeding, not excretion.
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166
Medium
166 of 176
Understanding
+4 | -1
(S-I) : Ctenophores reproduce by sexual method of reproduction.
(S-II): In Ctenophores fertilisation is internal with indirect development.
(S-II): In Ctenophores fertilisation is internal with indirect development.
View answer and explanation
Correct option: B
S-I is true and S-II is false
Option B is correct because Ctenophores reproduce sexually, but fertilization is external with indirect development.
167
Hard
167 of 176
Understanding
+4 | -1
Type of symmetry with only one central axis but many planes is
View answer and explanation
Correct option: D
Radial symmetry
Option D (Radial symmetry) is correct because radial symmetry has multiple planes passing through a central axis that can divide the organism into similar halves.
168
Easy
168 of 176
Understanding
+4 | -1
The animal with bilateral symmetry in young stage, and radial pentamerous symmetry in the adult stage belongs to the phylum
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Correct option: D
Echinodermata
Option D (Echinodermata) is correct because echinoderms have bilateral symmetry in their larval stage and radial pentamerous symmetry as adults.
169
Medium
169 of 176
Understanding
+4 | -1
The response to external stimulus is quicker and more precise in which of the following symmetry?
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Correct option: B
Bilateral
Option B (Bilateral) is correct because bilateral symmetry allows for cephalization (concentration of sensory organs at the head), leading to quicker and more precise responses to external stimuli.
170
Medium
170 of 176
Analyzing
+4 | -1
Choose odd one.
View answer and explanation
Correct option: A
Direct development – Porifera
Option A (Direct development – Porifera) is the odd one out because Porifera typically exhibit indirect development with a larval stage, unlike the other options which correctly pair a feature with its phylum.
171
Easy
171 of 176
Understanding
+4 | -1
Statement I : Sponges exhibit cellular level of organization
Statement II : Division of labour occurs among the cells
Statement II : Division of labour occurs among the cells
View answer and explanation
Correct option: B
Both SI & SII are correct
Option B (Both SI & SII are correct) is correct because sponges have cellular level organization and exhibit division of labor among their cells.
172
Hard
172 of 176
Remembering
+4 | -1
Choanocytes in ascon type of canal system form lining of
View answer and explanation
Correct option: D
Spongocoel
Option D (Spongocoel) is correct because in the asconoid type of canal system in sponges, choanocytes line the spongocoel, the large central cavity.
173
Easy
173 of 176
Remembering
+4 | -1
Nematoblasts of Hydra are
View answer and explanation
Correct option: A
Sensory
Option C (With nematocyst apparatus) is correct because nematoblasts are cells that contain the nematocyst, the stinging organelle, and are thus directly associated with the nematocyst apparatus.
174
Easy
174 of 176
Remembering
+4 | -1
Which of the following are also known as collar cells?
View answer and explanation
Correct option: A
Choanocytes
Option A (Choanocytes) is correct because choanocytes, also known as collar cells, are flagellated cells lining the interior of sponges that create water currents and capture food particles.
175
Easy
175 of 176
Understanding
+4 | -1
From the following statements select the wrong one.
View answer and explanation
Correct option: C
Animals belonging to phylum-Porifera are exclusively marine
Option C (Animals belonging to phylum-Porifera are exclusively marine) is correct because while most Porifera are marine, some species inhabit freshwater environments.
176
Medium
176 of 176
Understanding
+4 | -1
Complete the analogy. Cockroach : Tracheal tubes :: Earthworm : _____
View answer and explanation
Correct option: B
Moist body surface
Option B (Moist body surface) is correct because earthworms respire through their moist skin, while cockroaches use tracheal tubes.
Revision notes and key takeaways
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