Question

4.Which of the following are covered by a single membrane? (A) mitochondria (B) vacuole (C) nucleus (D) plastid 5. Plasmolysis in a plant cell is defined as (A) break down (lysis) of plasma membrane in hypotonic medium (B) shrinkage of cytoplasm in hypertonic medium (C) shrinkage of nucleoplasm (D) none of these 6. Cell wall of plants is made up of (A) cellulose (B) bacteria (C) Fungi (D) Amoeba 7. Lipid molecules in the cell are synthesized by (A) smooth endoplasmic reticulum (B) rough endoplasmic reticulum (C) Golgi apparatus (D) plastids 8. Which of the following tissues provides mechanical strength to plants? (A) Sclerenchyma (B) Parenchyma (C) Meristem (D) Chlorenchyma 9. Growth in grasses is by (A) Lateral meristem (B) Apical meristem (C) Intercalary meristem (D) None of the above 10. Cytoplasm of muscle cell is called (A) Sarcoplasm (B) Serum (C) Plasma (D) ECF 11. If the tip of a plant is removed, its growth in length gets stopped. It is due to the loss of (A) Cambium (B) Apical meristem (C) Lateral meristem (D) Intercalary meristem 12. Fats are stored in human body as (A) Cuboidal epithelium (B) Adipose tissue (C) Bones (D) Cartilage 13. Liquid food drinking is called (A) Pinocytosis (B) Phagocytosis (C) Imbibition (D) Exocytosis 14. What is the movement of gaseous molecules from an area of high concentration to an area of low concentration is called (A) Isotonic (B) Diffusion (C) Osmosis (D) Solution

Answer 1

Answer:

vacilue and lysosome is covered by single membrane