Science Group
Explore subjects and practice MCQs
7
Chapters
1,610
Total MCQs
Science Group
Answer: Ligaments are strong, slightly elastic bands that connect bone to bone and hold joints together.
Answer: Cartilage is a flexible connective tissue found at joints and in the nose and ears.
Answer: The heart is an organ because it is made of several tissues working together to pump blood.
Answer: The excretory system, mainly the kidneys, removes metabolic wastes and excess water as urine.
Answer: On the basis of position, meristematic tissues are classified as apical, intercalary and lateral meristems.
Answer: Cardiac muscle in the heart wall contracts rhythmically to pump blood.
Answer: Smooth muscle is present in the walls of blood vessels and other hollow internal organs.
Answer: Impulses enter through dendrites, pass through the cell body and leave along the axon.
1089
Answer: The axon is a long single process that conducts impulses away from the cell body to other neurons or muscles.
Answer: Nervous tissue shows irritability, responding to stimuli and conducting signals rapidly.
Answer: Lymphocytes, a type of white blood cell, produce antibodies to fight infection.
Answer: Bone is a connective tissue with a hard matrix of calcium salts; the others are epithelial, muscular and nervous tissues.
Answer: Cartilage is a flexible, semi-rigid tissue found at joints and in the ear and nose.
Answer: Cardiac muscle cells are branched and joined end to end by intercalated discs.
Answer: Tracheids and vessels of xylem are dead, hollow cells that conduct water and minerals.
Answer: Sieve tubes transport prepared food (sugars) from leaves to all parts of the plant.
Answer: In older stems and roots, the epidermis is replaced by cork, a waterproof protective tissue.
Answer: Thin squamous epithelium allows rapid exchange of substances such as oxygen and carbon dioxide.
Answer: Goblet cells secrete mucus, which lubricates and protects the lining of organs like the respiratory and digestive tracts.
Answer: The circulatory system transports oxygen and carbon dioxide in the blood between lungs and tissues.