A. 36 cm²
B. 84 cm²
C. 28 cm²
D. 7 cm²
41. All of the following are mammals EXCEPT
A. Shark
B. Seal
C. Porpoise
D. Bat
42. Bats and birds are good fliers but the bat differs from bird in having
A. Diaphragm
B. Four-chambered heart
C. Wings
D. Warm bloodedness
43. By the statement 'survival of the fittest', Darwin meant that
A. The strongest of all species survives
B. The most intelligent of the species survives
C. The cleverest of the species survives
D. The most adaptable of the species to changes survives
44. Most of the endangered species are the victims of
A. Habitat destruction
B. Over-hunting
C. Acid rain
D. Competition with introduced species
45. During heart attack, a doctor may inject
A. Thyroid
B. Prolactin
C. Insulin
D. Adrenaline
46. The autonomic nervous system controls all of the following EXCEPT
A. Secretion of digestive juice
B. Sweating
C. Thought
D. Peristalsis
47. Which one of the following human cells do not contain mitochondria?
A. Nerve cell
B. Red blood cell
C. Liver cell
D. White blood cell
48. Which of the following is NOT correctly matched?
A. Sycon - Canal system
B. Star fish - Radial symmetry
C. Round worm - Pseudosegmentation
D. Insect - Metameric segmentation
Answer (2)
The answers to the biology questions range from identifying shark as a non-mammal to understanding that red blood cells lack mitochondria. Key concepts include Darwin's theory of adaptability and the role of habitat destruction in endangerment. Understanding these concepts is crucial for grasping basic biological principles. ;
The answers identify the shark as a non-mammal and explain various biological concepts including the functions of the diaphragm in bats, Darwin's adaptability theory, and how habitat destruction affects endangered species. Key topics also include the autonomic nervous system controls and the cellular structure of red blood cells. The correct choices are aligned with high school level biology principles.
;
