Penguin is a bird that lost the use of its wings by not flying. Such a statement would express the views of
1). Darwin
2). Wallace
3). Lamarck
4). Huxley
Which of the following has no blood but respires?
1). Earthworm
2). Hydra
3). Cockroach
4). Fish
A bone is distinguished from cartilage by the presence of
1). Collagen
2). Lymph vessels
3). Blood vessels
4). Haversian canals
Evolution is defined as
1). history of race
2). development of race
3). history and development of race with variations
4). progressive history of race
Which of the following structures is thought to be exceptionally rich in hydrolytic enzymes?
1). Lysosomes
2). Microsome
3). Chromosomes
4). Endoplasmic reticulum