Practice free Classification of Animal Kingdom (Zoology) NEET multiple-choice questions online with instant answers and detailed explanations. No login required.
Which of the following distinctive features is characteristic of parasitic Platyhelminthes?
The summary explicitly mentions, 'The parasitic forms show distinct suckers and hooks.' Additionally, Table 4.2 lists 'Flat body, suckers.' as distinctive features for Platyhelminthes.
What kind of digestive system is typically found in Platyhelminthes?
Table 4.2 in the NCERT text specifies 'Incomplete' under 'Digestive System' for Platyhelminthes.
Which of the following organ systems is absent in Platyhelminthes, according to the provided table?
Table 4.2 clearly states 'Absent' under 'Circulatory System' for Platyhelminthes. Reproductive and Nervous systems are implied to be present as they exhibit 'organ level' organization, and digestion is incomplete, not absent.
Platyhelminthes are described as having a 'flat body'. What is the biological term for this characteristic?
The summary mentions 'The platyhelminths have flat body'. In biology, a 'flat body' specifically refers to being dorsoventrally flattened.
Based on the organization level, Platyhelminthes are considered 'higher' than which of the following phyla?
The text states, 'In coelenterates, the arrangement of cells is more complex. Here the cells performing the same function are arranged into tissues, hence is called tissue level of organisation. A still higher level of organisation, i.e., organ level is exhibited by members of Platyhelminthes.' This indicates Platyhelminthes have a higher organization level than Coelenterates.
Regarding the presence of segmentation, what is true for Platyhelminthes?
Table 4.2, under 'Segmentation', lists 'Absent' for Platyhelminthes.
The respiratory system in Platyhelminthes is:
Table 4.2, under 'Respiratory System', lists 'Absent' for Platyhelminthes.
Regarding the endoskeleton of Osteichthyes, which of the following is true?
The term 'Osteichthyes' literally translates to 'bony fish,' indicating an endoskeleton made of bone. The NCERT text implicitly supports this by contrasting them with Chondrichthyes, which have a cartilaginous endoskeleton.
Vertebrates, including Osteichthyes, possess which of the following internal structures for excretion and osmoregulation?
The NCERT text states, 'Besides the basic chordate characters, vertebrates have a ventral muscular heart with two, three or four chambers, kidneys for excretion and osmoregulation and paired appendages which may be fins or limbs.' This directly indicates kidneys for excretion and osmoregulation in vertebrates.
All members of the superclass Pisces are characterized by which of the following?
The NCERT text states, 'Gnathostomata has two super classes, Pisces and Tetrapoda. Classes Chondrichthyes and Osteichthyes bear fins for locomotion and are grouped under Pisces.' This confirms that fins for locomotion are a common characteristic of all members grouped under Pisces, which includes both Chondrichthyes and Osteichthyes.
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