Zoology MCQs for NEET — Practice Questions with Answers

Though the term 'biopiracy' isn't explicitly defined, the text describes the core concept: 'There is growing public anger that certain companies are being granted patents for products and technologies that make use of the genetic materials, plants and other biological resources that have long been identified, developed and used by farmers and indigenous people of a specific region/country.' This aligns with the definition of biopiracy.

According to the NCERT text, 'Endoskeleton is fully ossified (bony) and the long bones are hollow with air cavities (pneumatic).' This adaptation reduces the weight of the bird, which is crucial for flight.

The NCERT text states: 'They are warm-blooded (homoiothermous) animals, i.e., they are able to maintain a constant body temperature.' Homoiothermous organisms can regulate their internal temperature independently of the external environment.

The NCERT text mentions: 'The digestive tract of birds has additional chambers, the crop and gizzard.' The crop stores food, and the gizzard grinds it.

The NCERT text states: 'The forelimbs are modified into wings.' This is a key adaptation for aerial locomotion in birds.

The NCERT text highlights: 'The characteristic features of Aves (birds) are the presence of feathers and most of them can fly except flightless birds (e.g., Ostrich).' Feathers are unique to birds and essential for flight and insulation.

The NCERT text states: 'Heart is completely four-chambered.' A four-chambered heart ensures complete separation of oxygenated and deoxygenated blood, which is crucial for maintaining a high metabolic rate in warm-blooded animals.

The NCERT text mentions: 'Skin is dry without glands except the oil gland at the base of the tail.' This gland produces oil for preening and waterproofing feathers.

The NCERT text clarifies: 'The members of subphylum Vertebrata possess notochord during the embryonic period. The notochord is replaced by a cartilaginous or bony vertebral column in the adult. Thus all vertebrates are chordates but all chordates are not vertebrates.' This explains the hierarchical relationship.

The NCERT text notes: 'The hind limbs generally have scales and are modified for walking, swimming or clasping the tree branches.' While feathers cover most of the body, scales are a characteristic feature of their hind limbs.