The respiratory organ of a fish is known as _____.
Important Questions on Animals
Which of the following statements is/are correct regarding trachea as a respiratory organ in insects?
A. After passing through a spiracle, air enters a longitudinal tracheal trunk.
B. Each tracheal tube develops as an invagination of the ectoderm during embryonic development.
Which of the following statements regarding the gills of fishes is/are true?
A. It lies behind and to the side of the mouth cavity.
B. The blood capillaries in the gill filaments are far from the gill surface to take up oxygen from the water.
Select the correct statements about snakes:
I. Only four types of poisonous snakes are found in our country.
II. Cobra is a poisonous variety of snakes.
III. A poisonous snake has four hallow teeth (fangs) through which the poison enters the body of a person when the snake bites.
IV. Medicine for snake bites is made from the snake's poison.
Which of the following statements is/are correct regarding the respiratory system of the flies?
A. They gather oxygen through lungs.
B. The transport system for the delivery of oxygen in flies are heart and blood.
One of the following is a very unique feature of the mammalian body:
