Question

50) DIRECTIONS: They have small openings through which gaseous exchange take place. The roots
take in air present in soil. The breakdown of glucose in plant cell is similar to that in other lining
beings. The tiny pores present in plants are called
A) Holes
C) Stomata
B) Stigmata
D) Spiracles
51) DIRECTIONS: Read the passage(s) given below and answer the questions that follow. Passage - 3
Plants also respire. They have small openings through which gaseous exchange take place. The roots
take in air present in soil. The breakdown of glucose in plant cells similar to that in other lining
beings. Plants take in_ gas during respiration
A) Oxygen
C) Nitrogen :
B) Carbon dioxide
D) Water vapour
52) DIRECTIONS: Plants also respire. They have small openings through which gaseous exchange
take place. The roots take in air present in soil. The breakdown of glucose in plant cell is similar to that
in other lining beings. Roots take up air from
A) Lenticels
C) Air spaces
B) Stomata
D) Spiracles
53) DIRECTIONS: Lungs are present in chest cavity. This cavity is surrounded by ribs on the sides. A
large muscular sheet called diaphragm form the floor of the chest cavity. During inhalation the ribs
move and diaphragm moves
A) Down, up
C) Up, up
D) Down, down
B) Up, down
54) DIRECTIONS: Lungs are present in chest cavity. This cavity is surrounded by ribs on the sides. A
large muscular sheet called diaphragm form the floor of the chest cavity. Wind pipe is also called
A) Lungs
C) Larynx
B) Pharynx
D) Trachea
55) DIRECTIONS: Lungs are present in chest cavity. This cavity is surrounded by ribs on the sides. A
large muscular sheet called diaphragm form the floor of the chest cavity. Percentage of oxygen in
inhaled air is in exhaled air,
A) Less than
C) Same as
B) More than
D) Cannot say​

Answer 1

Answer:

50) stomata

51) oxygen

52) Sir spaces

53) up and down

54) trachea

55) oxygen in inhaled air is more than that in exhaled so (b)

hope it helps

Answer 2

Answer:

50-a transpiration occurs from here.

51-a during respiration plant take in Oxygen while during photosynthesis they take in carbon dioxide.

52-c. that's why clogging of soil leads to death of plant.

53 b.during inhalation, ribs move up and diaphragm moves down to increase thoracic volume.

54d. pharynx is common passage for food nd air. larynx is sound box.

55b.

hope it helps