Q1.) Fill in the blanks
(5)
1.
soil is well aerated particles of soil.
2. A large mascular sheet called
forms the floor
of the chest cavity.
3. Insects have a network of air tubes called
for gas exchange.
4. Water reaches great heights in the trees because of
suction pull caused by
5. Regular traditional breathing exercise can increase the
capacity of
to take in more air.
Q2.)
a)Answer in one word. (2)
1. An anaerobic organism
2. In plants water is transported through
Answers
Explanation:
(a)well aerated,
(B)The diaphragm, located below the lungs, is the major muscle of respiration. It is a large, dome-shaped muscle that contracts rhythmically and continually, and most of the time, involuntarily. Upon inhalation, the diaphragm contracts and flattens and the chest cavity enlarges
(c)Insect respiration HTML5
The respiratory organs of insects are called tracheal tubes. These are a network of tubes opening to the exterior via respiratory orifices (stigmas) and extending to all of the organs of the insect's body by branching into tracheoles having very fine, permeable walls.
(d)Therefore, Water reaches great heights in the trees because of the suction pull caused by transpiration.
(e) lungs
2) (a)Obligate aerobes need oxygen because they cannot ferment or respire anaerobically. They gather at the top of the tube where the oxygen concentration is highest. 2: Obligate anaerobes are poisoned by oxygen, so they gather at the bottom of the tube where the oxygen concentration is lowest.
(b) The structure of plant roots, stems, and leaves facilitates the transport of water, nutrients, and photosynthates throughout the plant. The phloem and xylem are the main tissues responsible for this movement.