Practice free Classification of Animal Kingdom (Zoology) NEET multiple-choice questions online with instant answers and detailed explanations. No login required.
The mantle in molluscs is a soft and spongy layer of skin that forms over which part of the body?
The NCERT text states, 'A soft and spongy layer of skin forms a mantle over the visceral hump.'
Molluscs are primarily:
The NCERT text mentions, 'Molluscs are terrestrial or aquatic (marine or fresh water) having an organ-system level of organisation.'
Which of the following statements about Phylum Mollusca is incorrect?
While the Arthropods have a chitinous exoskeleton, the NCERT text states that molluscs have a body 'covered by a calcareous shell'. The general summary also mentions 'The molluscs have a soft body surrounded by an external calcareous shell. The body is covered with external skeleton made of chitin.' However, this last sentence in the summary is contradictory to the detailed description of mollusca later in the text and more characteristic of arthropods. Based on the detailed description of Mollusca, the covering is a calcareous shell, not a chitinous exoskeleton. The chitinous exoskeleton is explicitly mentioned for Arthropoda.
Octopus, also known as Devil fish, belongs to which phylum?
The NCERT text lists 'Octopus (Devil fish)' as an example under Phylum Mollusca.
The distinct head region in molluscs is equipped with:
The NCERT text states, 'The anterior head region has sensory tentacles.' for molluscs.
Which of the following characteristics is NOT typically found in Reptilia?
According to the NCERT text, 'They do not have external ear openings. Tympanum represents ear.' Therefore, the presence of external ear openings is not a characteristic of Reptilia.
The locomotion mode from which the class Reptilia derives its name literally means:
The context states: 'The class name refers to their creeping or crawling mode of locomotion (Latin, repere or reptum, to creep or crawl).'
Identify the INCORRECT match regarding examples of Reptilia:
The NCERT text lists 'Naja (Cobra)' as a poisonous snake, while 'Vipera (Viper)' is another distinct example. Naja is Cobra, not Viper.
Which of the following reptiles exhibits a four-chambered heart?
The text explicitly states: 'Heart is usually three-chambered, but four-chambered in crocodiles.'
Regarding the skin of reptiles, which statement is correct?
The NCERT states: 'Their body is covered by dry and cornified skin, epidermal scales or scutes.'
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