The correct answer is:(b) Tendons. Nerve cells (neurons) contain nerve endings, dendrites and axons, which are involved in transmitting electrical signals. Tendons, however, are connective tissues that attach muscles to bones Class 9th Science NCERT MCQ Questions NCERT Books MCQ ...

The correct answer is:(d) Osteocytes Osteocytes are the mature bone cells found in bony tissue. They are embedded in the bone matrix and help in maintaining bone tissue. Chondrocytes are found in cartilage, while basophils and mast cells are types ...

The correct answer is:(b) Kidney The kidney does not contain cartilage. Cartilage is present in structures like the nose, larynx and ear, where it provides support and flexibility. The kidney is made up of soft tissue and nephrons. Class 9th ...

The correct answer is:(b) Conduction of water The epidermis primarily functions in protection, transpiration and gas exchange (through stomata), but it does not conduct water. Water conduction is carried out by the xylem in plants. Class 9th Science NCERT MCQ ...

The correct answer is:(d) contraction of skeletal muscles which pulls the tendon to move the bones. When you run or walk, skeletal muscles contract and their tendons pull on the bones, causing movement. Tendons connect muscles to bones, facilitating voluntary ...

The correct answer is:(d) (iii) and (iv) Cardiac muscles and smooth muscles act involuntarily. Cardiac muscles are found in the heart and contract automatically, while smooth muscles are found in internal organs like the stomach and intestines, controlling movement without ...

The correct answer is:(c) Mitosis Mitosis is the type of cell division responsible for growth, development and repair in multicellular organisms. It produces genetically identical diploid cells, ensuring the body’s tissues grow and regenerate without altering genetic information. Class 9th ...

The correct answer is:(a) Virchow Rudolf Virchow (1855) proposed the famous statement “Omnis cellula e cellula,” meaning “cells arise from pre-existing cells.” This idea contributed to the Cell Theory, emphasizing that cell division is the basis of life. Class 9th ...

The correct answer is:(d) Both (b) and (c). The contractile vacuole in unicellular organisms like Amoeba and Paramecium helps in osmoregulation by expelling excess water and also aids in excretion by removing metabolic wastes, maintaining the cell’s internal environment. Class ...

The correct answer is (a) 10⁻⁶ m. 1 micrometer (µm) = 10⁻⁶ meters, which means it is one-millionth of a meter. It is commonly used to measure cell sizes, bacteria and microscopic structures in biology and microbiology. Class 9th Science ...