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All questions of Classification of Animal Kingdom for UPSC CSE Exam
Which of the following is a characteristic of insects?- a)Presence of a backbone
- b)Cold-bloodedness
- c)Three pairs of legs
- d)Presence of gills
Correct answer is option 'C'. Can you explain this answer?
Which of the following is a characteristic of insects?
a)
Presence of a backbone
b)
Cold-bloodedness
c)
Three pairs of legs
d)
Presence of gills
|
Pallavi Chakraborty answered |
Characteristics of Insects:
- Presence of a backbone:
- Insects do not have a backbone, they have an exoskeleton made of chitin.
- Backbone is a characteristic of vertebrates, not insects.
- Cold-bloodedness:
- Insects are cold-blooded animals, meaning their body temperature fluctuates with the environment.
- This is a common characteristic of insects but not a defining one.
- Three pairs of legs:
- One of the key characteristics of insects is that they have three pairs of legs.
- This distinguishes them from other arthropods like spiders, which have four pairs of legs.
- Presence of gills:
- Insects do not have gills; they breathe through a system of tubes called tracheae.
- Gills are typically found in aquatic organisms like fish and some arthropods.
Therefore, the correct characteristic of insects among the options given is three pairs of legs. This feature is a defining characteristic of insects and sets them apart from other groups of animals.
- Presence of a backbone:
- Insects do not have a backbone, they have an exoskeleton made of chitin.
- Backbone is a characteristic of vertebrates, not insects.
- Cold-bloodedness:
- Insects are cold-blooded animals, meaning their body temperature fluctuates with the environment.
- This is a common characteristic of insects but not a defining one.
- Three pairs of legs:
- One of the key characteristics of insects is that they have three pairs of legs.
- This distinguishes them from other arthropods like spiders, which have four pairs of legs.
- Presence of gills:
- Insects do not have gills; they breathe through a system of tubes called tracheae.
- Gills are typically found in aquatic organisms like fish and some arthropods.
Therefore, the correct characteristic of insects among the options given is three pairs of legs. This feature is a defining characteristic of insects and sets them apart from other groups of animals.
In which class would you find animals that lay eggs and have scales ?
- a)Amphibia
- b)Reptilia
- c)Aves
- d)Mammalia
Correct answer is option 'B'. Can you explain this answer?
In which class would you find animals that lay eggs and have scales ?
a)
Amphibia
b)
Reptilia
c)
Aves
d)
Mammalia
|
Glance Learning Institute answered |
Reptiles, such as snakes, lizards, turtles, and crocodiles, lay eggs and have scales or, in the case of birds, feathers. Reptiles are cold-blooded and typically have a dry, scaly skin.
The animal phylum with the largest number of species is:- a)Porifera
- b)Arthropoda
- c)Mollusca
- d)Chordata
Correct answer is option 'B'. Can you explain this answer?
The animal phylum with the largest number of species is:
a)
Porifera
b)
Arthropoda
c)
Mollusca
d)
Chordata
|
Knowledge Center answered |
Arthropoda. Arthropods, which include insects, crustaceans, spiders, and centipedes, among others, have the highest number of known species among all animal phyla.
The classification of animals is based on:- a)Their habitat
- b)Their mode of locomotion
- c)Their diet
- d)Their body structure and characteristics
Correct answer is option 'D'. Can you explain this answer?
The classification of animals is based on:
a)
Their habitat
b)
Their mode of locomotion
c)
Their diet
d)
Their body structure and characteristics
|
|
Glance Learning Institute answered |
Their body structure and characteristics. Animals are classified based on their anatomical and physiological features, such as their body symmetry, presence or absence of a backbone, type of body covering, and other distinguishing traits.
Animals that feed on both plants and other animals are called:- a)Carnivores
- b)Herbivores
- c)Omnivores
- d)Detritivores
Correct answer is option 'C'. Can you explain this answer?
Animals that feed on both plants and other animals are called:
a)
Carnivores
b)
Herbivores
c)
Omnivores
d)
Detritivores
|
|
Glance Learning Institute answered |
Omnivores are animals that have a diet consisting of both plants and other animals. They can consume a wide range of food sources, including fruits, vegetables, insects, and small animals.
The process of shedding the old exoskeleton and forming a new one in arthropods is called:- a)Metamorphosis
- b)Molting
- c)Regeneration
- d)Respiration
Correct answer is option 'B'. Can you explain this answer?
The process of shedding the old exoskeleton and forming a new one in arthropods is called:
a)
Metamorphosis
b)
Molting
c)
Regeneration
d)
Respiration
|
|
Knowledge Center answered |
Arthropods, including insects, crustaceans, and arachnids, undergo molting, also known as ecdysis, to grow and replace their exoskeleton. During molting, the old exoskeleton is shed, and a new, larger exoskeleton is formed.
Which of the following is a characteristic of birds?- a)Presence of feathers
- b)Cold-bloodedness
- c)Nocturnal lifestyle
- d)Absence of limbs
Correct answer is option 'A'. Can you explain this answer?
Which of the following is a characteristic of birds?
a)
Presence of feathers
b)
Cold-bloodedness
c)
Nocturnal lifestyle
d)
Absence of limbs
|
|
Knowledge Center answered |
Birds are known for their feathers, which provide them with insulation, enable flight, and play a role in courtship displays. Unlike reptiles, birds are warm-blooded and have a high metabolic rate.
The phylum that includes animals like snails, clams, and octopuses is:- a)Mollusca
- b)Arthropoda
- c)Echinodermata
- d)Platyhelminthes
Correct answer is option 'A'. Can you explain this answer?
The phylum that includes animals like snails, clams, and octopuses is:
a)
Mollusca
b)
Arthropoda
c)
Echinodermata
d)
Platyhelminthes
|
|
Glance Learning Institute answered |
The phylum Mollusca comprises animals with soft bodies, often protected by a hard shell. Snails, clams, octopuses, and squids are examples of animals belonging to this phylum.
An animal that has a backbone is classified under which phylum?- a)Cnidaria
- b)Porifera
- c)Chordata
- d)Annelida
Correct answer is option 'C'. Can you explain this answer?
An animal that has a backbone is classified under which phylum?
a)
Cnidaria
b)
Porifera
c)
Chordata
d)
Annelida
|
|
Glance Learning Institute answered |
The phylum Chordata includes animals that have a notochord or a backbone at some stage of their development. This phylum encompasses a wide range of animals, including fish, reptiles, birds, mammals, and more.
Which of the following is not a characteristic of Porifera?- a)They have a cellular level of organization
- b)They are filter feeders
- c)They have specialized cells called choanocytes
- d)They have a well-developed nervous system
Correct answer is option 'D'. Can you explain this answer?
Which of the following is not a characteristic of Porifera?
a)
They have a cellular level of organization
b)
They are filter feeders
c)
They have specialized cells called choanocytes
d)
They have a well-developed nervous system
|
|
Glance Learning Institute answered |
They have a well-developed nervous system. Porifera, commonly known as sponges, have a cellular level of organization, are filter feeders, and possess specialized cells called choanocytes. However, they lack a well-developed nervous system.
Which of the following is not a characteristic of animals?- a)Autotrophic nutrition
- b)Multicellularity
- c)Heterotrophic nutrition
- d)Presence of specialized cells
Correct answer is option 'A'. Can you explain this answer?
Which of the following is not a characteristic of animals?
a)
Autotrophic nutrition
b)
Multicellularity
c)
Heterotrophic nutrition
d)
Presence of specialized cells
|
|
Knowledge Center answered |
Autotrophic nutrition is not a characteristic of animals. Animals are heterotrophic, meaning they obtain nutrients by consuming other organisms or organic matter.
Which of the following is not a characteristic of mammals?- a)Presence of mammary glands
- b)Warm-bloodedness
- c)Egg-laying
- d)Presence of hair or fur
Correct answer is option 'C'. Can you explain this answer?
Which of the following is not a characteristic of mammals?
a)
Presence of mammary glands
b)
Warm-bloodedness
c)
Egg-laying
d)
Presence of hair or fur
|
|
Knowledge Center answered |
Mammals are characterized by several features, including the presence of mammary glands, which produce milk for their young, warm-bloodedness, and the presence of hair or fur. However, mammals give birth to live young and do not lay eggs.
Which of the following is not a class of vertebrates?- a)Mammalia
- b)Reptilia
- c)Amphibia
- d)Mollusca
Correct answer is option 'D'. Can you explain this answer?
Which of the following is not a class of vertebrates?
a)
Mammalia
b)
Reptilia
c)
Amphibia
d)
Mollusca
|
|
Glance Learning Institute answered |
Mollusca is not a class of vertebrates but a separate phylum that includes animals like snails, clams, and octopuses. The classes of vertebrates include Mammalia, Reptilia, Amphibia, and others.
Animals that lack a backbone are called:- a)Vertebrates
- b)Invertebrates
- c)Arthropods
- d)Mollusks
Correct answer is option 'B'. Can you explain this answer?
Animals that lack a backbone are called:
a)
Vertebrates
b)
Invertebrates
c)
Arthropods
d)
Mollusks
|
|
Knowledge Center answered |
Invertebrates are animals that lack a backbone or vertebral column. This diverse group includes insects, mollusks, worms, jellyfish, and many other organisms.
The largest animal on Earth is:- a)Blue whale
- b)African elephant
- c)Giraffe
- d)Saltwater crocodile
Correct answer is option 'A'. Can you explain this answer?
The largest animal on Earth is:
a)
Blue whale
b)
African elephant
c)
Giraffe
d)
Saltwater crocodile
|
|
Knowledge Center answered |
The blue whale holds the title for being the largest animal on Earth. It can reach lengths of up to 100 feet and weigh over 150 tons.
The respiratory organ in insects is called:- a)Gills
- b)Lungs
- c)Spiracles
- d)Tracheae
Correct answer is option 'C'. Can you explain this answer?
The respiratory organ in insects is called:
a)
Gills
b)
Lungs
c)
Spiracles
d)
Tracheae
|
|
Knowledge Center answered |
Insects have a network of tiny tubes called tracheae that deliver oxygen directly to their tissues. The openings to these tracheae are called spiracles, which are typically located on the sides of an insect's body.
The animal phylum that includes animals like jellyfish and sea anemones is:- a)Porifera
- b)Cnidaria
- c)Echinodermata
- d)Platyhelminthes
Correct answer is option 'B'. Can you explain this answer?
The animal phylum that includes animals like jellyfish and sea anemones is:
a)
Porifera
b)
Cnidaria
c)
Echinodermata
d)
Platyhelminthes
|
|
Knowledge Center answered |
Cnidaria is the phylum that encompasses animals such as jellyfish, sea anemones, corals, and hydroids. These organisms have specialized cells called cnidocytes, which contain stinging structures used for prey capture and defense.
The process of converting food into energy in living organisms is called:- a)Respiration
- b)Photosynthesis
- c)Digestion
- d)Circulation
Correct answer is option 'A'. Can you explain this answer?
The process of converting food into energy in living organisms is called:
a)
Respiration
b)
Photosynthesis
c)
Digestion
d)
Circulation
|
|
Glance Learning Institute answered |
Respiration is the process by which living organisms convert food into energy. It involves the breakdown of organic molecules, such as glucose, to release energy in the form of ATP (adenosine triphosphate).
The phylum that includes animals with jointed appendages is:- a)Annelida
- b)Arthropoda
- c)Platyhelminthes
- d)Nematoda
Correct answer is option 'B'. Can you explain this answer?
The phylum that includes animals with jointed appendages is:
a)
Annelida
b)
Arthropoda
c)
Platyhelminthes
d)
Nematoda
|
|
Glance Learning Institute answered |
Arthropods have jointed appendages, which include legs, antennae, and mouthparts. This phylum comprises a vast array of diverse animals, such as insects, spiders, crabs, and millipedes.
Which of the following is not a type of symmetry found in animals?- a)Bilateral symmetry
- b)Radial symmetry
- c)Asymmetry
- d)Spiral symmetry
Correct answer is option 'D'. Can you explain this answer?
Which of the following is not a type of symmetry found in animals?
a)
Bilateral symmetry
b)
Radial symmetry
c)
Asymmetry
d)
Spiral symmetry
|
|
Knowledge Center answered |
Spiral symmetry is not a type of symmetry found in animals. The three common types of symmetry observed in animals are bilateral symmetry (divisible into two equal halves), radial symmetry (multiple planes of symmetry around a central axis), and asymmetry (lack of any defined symmetry).
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