1 Which plant tissue transports water and minerals from roots to leaves? A Phloem B Xylem C Epidermis D Mesophyll
2 What type of tissue lines the inner surface of the stomach and secretes digestive juices? A Glandular epithelial tissue B Smooth muscle tissue C Connective tissue D Nervous tissue
3 Which type of tissue covers the outer surface of the body and lines internal organs? A Connective tissue B Muscle tissue C Epithelial tissue D Nervous tissue
4 What is the main function of the xylem in a plant? A Transport of sugars B Transport of water and minerals C Gas exchange D Photosynthesis
5 The pancreas helps regulate blood glucose levels by producing which hormone? A Insulin B Adrenaline C Thyroxine D Testosterone
6 Which organ system includes the skin, hair, and nails? A Integumentary system B Skeletal system C Muscular system D Endocrine system
7 What is homeostasis? A The process of cell division B The maintenance of a stable internal environment C The movement of molecules from high to low concentration D The breakdown of food by enzymes
8 Which human organ system includes the heart, blood vessels, and blood? A Respiratory system B Digestive system C Circulatory system D Nervous system
9 Which of the following correctly lists the levels of organization from simplest to most complex? A Cell, tissue, organ, organ system, organism B Tissue, cell, organ, organism, organ system C Organ, tissue, cell, organ system, organism D Organism, organ system, organ, tissue, cell
10 Which system works with the nervous system to regulate body functions through hormones? A Endocrine system B Skeletal system C Digestive system D Respiratory system
11 Homeostasis refers to: A The process of cell division B Maintaining a stable internal environment C The movement of molecules across membranes D The breakdown of food
13 Which of the following best describes the levels of organization in a multicellular organism, from simplest to most complex? A Cell → Tissue → Organ → Organ System → Organism B Tissue → Cell → Organ → Organism → Organ System C Organ → Tissue → Cell → Organ System → Organism D Cell → Organ → Tissue → Organism → Organ System
14 When you are too hot, your body produces sweat. This is an example of: A Osmoregulation B Thermoregulation C Regulation of blood glucose D Regulation of oxygen
15 The main function of the root system in plants is to: A Produce flowers B Absorb water and minerals and anchor the plant C Perform photosynthesis D Transport sugars
16 The process of sweating helps to cool the body by: A Increasing heat production B Evaporation of water from the skin C Constricting blood vessels D Shivering
17 Sweating helps to cool the body because: A It increases body temperature B It releases heat when sweat evaporates C It constricts blood vessels D It reduces blood flow to the skin
18 Which of the following is an example of an organ system? A Heart B Blood vessel C Circulatory system D Red blood cell
19 What is the main function of the kidneys in the human body? A To pump blood around the body B To filter blood and remove waste as urine C To produce digestive enzymes D To control voluntary movements
20 The main function of the palisade tissue in a leaf is to: A Store water B Carry out photosynthesis C Transport sugars D Protect against water loss
21 Which organ system includes the brain and spinal cord and helps control and coordinate body activities? A Endocrine system B Nervous system C Muscular system D Circulatory system
22 Which tissue type is specialized for contraction and movement? A Epithelial tissue B Connective tissue C Muscle tissue D Nervous tissue
23 Which human organ system is mainly responsible for taking in oxygen and removing carbon dioxide? A Digestive system B Circulatory system C Respiratory system D Urinary system
24 Which part of the human brain controls balance and coordination? A Cerebrum B Cerebellum C Medulla D Hypothalamus
25 The root system in plants is mainly involved in: A Photosynthesis B Anchoring the plant and absorbing water C Transporting sugars to leaves D Producing flowers