10th Class Biology English Medium Online Test For Full Book With Answers

10th Class Biology English Medium Online Test For Full Book

Sr. # Questions Answers Choice
1 Which gas is a waste product of cellular respiration and is expelled from the human body during exhalation? Oxygen Nitrogen Carbon dioxide Methane
2 During inhalation, what happens to the intercostal muscles and the diaphragm? Intercostal muscles relax, diaphragm contracts Intercostal muscles contract, diaphragm relaxes Both intercostal muscles and diaphragm contract Both intercostal muscles and diaphragm relax
3 What substance in red blood cells is primarily responsible for transporting oxygen in the blood? Plasma Hemoglobin Platelets White blood cells
4 What is the primary function of the diaphragm in human respiration? To filter incoming air To warm and moisten air To contract and relax, changing lung volume To prevent food from entering the windpipe
5 Which part of the human respiratory system is responsible for the actual exchange of gases (oxygen and carbon dioxide)? Trachea Bronchi Alveoli Larynx
6 The regulation of carbon dioxide uptake and oxygen release in plants is primarily controlled by which structures for gaseous homeostasis? Root hairs Xylem vessels Phloem tissues Stomata
7 Xerophytes, plants adapted to dry environments, often exhibit which of the following features to conserve water? Large, broad leaves with many stomata Thin cuticle and shallow root system Sunken stomata, thick cuticle, and reduced leaf surface area Presence of pneumatophores
8 Plants excrete various waste products. Which of the following is a primary method for eliminating excess water and some metabolic wastes? Forming urine Storing wastes in specialized excretory organs Guttation and transpiration Releasing wastes through root hairs
9 Stomata are small pores primarily involved in which of the following homeostatic functions in plants? Absorption of mineral salts from the soil Production of glucose during daylight Regulation of gas exchange and water vapor release Structural support for leaves
10 Which of the following processes is crucial for maintaining water balance and temperature regulation in plants? Photosynthesis Respiration Transpiration Pollination
11 Which of the following adaptations maximizes the efficiency of gaseous exchange in plant leaves? Thick cuticle layer Compactly arranged mesophyll cells Large surface area provided by numerous stomata Reduced intercellular air spaces
12 The opening and closing of stomata are regulated by the turgidity of which specialized cells? Epidermal cells Mesophyll cells Guard cells Companion cells
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