Question 12. What are the products obtained by anaerobic respiration in plants? (a) Lactic acid + Energy(b) Carbon dioxide + Water + Energy(c) Ethanol + Carbon dioxide + Energy(d) PyruvateAnswerQuestion 13. The breakdown of pyruvate to give carbon di-oxide, water and energy takes place in(a) cytoplasm(b) mitochondria(c) chloroplast(d) nucleusAnswerQuestion 14. Glycolysis process occurs in which part of the cell?(a) Cytoplasm(b) Nucleus(c) Mitochondria(d) ChloroplastAnswerQuestion 15. Name the substances whose build up in the muscles during vigorous physical exercise may cause cramps?(a) Ethanol + Carbon dioxide + Energy(b) Lactic acid + Energy(c) Carbon dioxide + Water + Energy(d) PyruvateAnswerQuestion 16. Name the pores in a leaf through which respi-ratory exchange of gases takes place.(a) Lenticels(b) Vacuoles(c) Xylem(d) StomataAnswerQuestion l7. The respiratory pigment in human beings is:(a) carotene(b) chlorophyll(c) haemoglobin(d) mitochondriaAnswerQuestion 18. Which plant tissue transports water and min-erals from the roots to the leaf?(a) Xylem(b) Phloem(c) Parenchyma(d) CollenchymaAnswerQuestion 19. The movement of food in phloem is called:(a) transpiration(b) translocation(c) respiration(d) evaporationAnswerQuestion 20. A blood vessel which pumps the blood from the heart to the entire body:(a) artery(b) capillary(c) Vein(d) HaemoglobinAnswerQuestion 21. Name a circulatory fluid in the human body other than blood.(a) Platelets(b) RBC(c) Lymph(d) PlasmaAnswerQuestion 22. Single circulation, i.e., blood flows through the heart only once during one cycle of passage through the body, is exhibited by which of the following:(a) hyla, rana, draco(b) whale, dolphin, turtle(c) labeo, chameleon, salamander(d) hippocampus, exocoetus, anabasAnswerQuestion 23. Name the tube which connects the kidneys to the urinary bladder.(a) Urethra(b) Nephron(c) Tubule(d) UreterAnswerQuestion 24. Which part of nephron allows the selective reabsorption of useful substances like glucose, amino acids, salts and water into the blood capillaries?(a) Tubule(b) Glomerulus(c) Bowman’s capsule(d) UreterAnswerQuestion 25. Where is the dirty blood in our body filtered?(a) Heart(b) Lungs(c) Ureter(d) KidneysAnswerQuestion 26. The procedure used for cleaning the blood of a person by separating urea from it is called:(a) osmosis(b) filtration(c) dialysis(d) double circulationAnswerQuestion 27. Which is the correct sequence of body parts in the human alimentary canal?(a) Mouth → stomach → small intestine → large intestine → oesophagus(b) Mouth → oesophagus → stomach → small intestine → large intestine(c) Mouth → stomach → oesophagus → smallintestine → large intestine(d) Mouth → oesophagus → stomach → large intestine → small intestineAnswerQuestion 28. Identify the correct pat of urine in the human body.(a) Kidney → urinary bladder → urethra → ureter(b) Urinary bladder → ureter → kidney → urethra(c) Kidney → ureter → urethra → urinary bladder(d) Kidney → ureter → urinary bladder → urethra​