1. Amoeba shows following kind of nutrition
(a) autotrophic
(b) holozoic
(c) saprotrophic
(d) parasitic
Answer
(b)Holozoic2. The process by which blood is cleared of metabolic wastes in case of kidney failure is called
(a) artificial kidney
(b) dialysis
(c) transplantation
(d) filtration
Answer
(b)Dialysis3. Woody plants carry gaseous exchange through
(a) root hair
(b) stem hair
(c) Lenticels
(d) epidermal cells.
Answer
(c)Lenticels4. Where does digestion of starch begin in human body?
Answer
Mouth5. Give one example each of saprophytic and parasitic nutrition.
Answer
Parasitic Nutrition – Plasmodium (Protozoa) Saprophytic Nutrition – fungi6. Which of the following statements about the autotrophs is incorrect?
a) They store carbohydrates in the form of starch.
b) They constitute the first trophic level in food chains.
c) They convert water into carbohydrates in the absence of sunlight
d) They synthesize carbohydrates from and water in the presence of sunlight & chlorophyll.
Answer
(c) They convert water into carbohydrates in the absence of sunlight7. Which of these is not a part of the small intestine?
(a) Duodenum
(b) Jejunum
(c) Ileum
(d) Rectum
Answer
(d) Rectum8. During contraction of heart, what prevents backflow of blood?
(a) Thin walls of atria
(b) Thick muscular walls of ventricles
(c) Valves in heart
(d) All of the above
Answer
(c) Valves in heart9. Name excretory organ in amoeba and earthworm
Answer
Amoeba – Cell membrane Earthworm – Outer covering (skin)10. Name the plant tissue through which water and minerals are transported in plants.
Answer
Xylem11. Trachea do not collapse when there is not much air because they are –
(a) thick and muscular
(b) having cartilaginous rings
(c) Have valves
(d) supported by larynx.
Answer
(b) having cartilaginous rings12. Which one of the following blood vessels contains only deoxygenated blood?
(a) pulmonary vein
(b) pulmonary artery
(c) capillaries
(d) Aorta
Answer
(b) pulmonary artery13. The autotrophic mode of nutrition requires –
(a) Chlorophyll
(b) Sunlight
(c) Carbon – dioxide & water
(d) all of the above
Answer
(d) all of the above14. Name the red pigment carrying oxygen in blood.
Answer
Haemoglobin15. Name the hormone which is responsible for reabsorption of water in nephrons.
Answer
Anti – diuretic – hormone (ADH) or vasopressin16. When air is blown from mouth into a test – tube containing lime water, the lime water turned milky due to presence of –
(a) oxygen
(b) nitrogen
(c) water vapours
(d) carbon – dioxide
Answer
(d) carbon – dioxide17. In which of the following group/ groups of animals, heart does not pump oxygenated blood to different parts of the body?
(a) Pisces only
(b) Amphibians only
(c) Amphibians and reptiles only
(d) Pisces and amphibians.
Answer
(a) Pisces only18. The filtration units of kidneys are called –
(a) Ureter
(b) Urethra
(c) Neurons
(d) nephrons.
Answer
(d)nephrons19. What is the mode of nutrition in fungi and plasmodium?
Answer
Fungi – Saprophytic Plasmodium – parasitic20. Which of them contain less nitrogenous waste – renal vein or the renal artery?
Answer
Renal vein21. Amoeba captures food with the help of –
(a) teeth
(b) cilia
(c) pseudopodia
(d) tentacles
Answer
(c) pseudopodia22. Which of the following is most appropriate for aerobic respiration?

Answer
23. Name the part of alimentary canal receiving bile from the liver.
(a) Oesophagus
(b) Stomach
(c) Small intestine
(d) Large intestine
Answer
(c)Small Intestine24. What is glycolysis?
Answer
Breakdown of Glucose into pyruvate is known as glycolysis25. Name the largest artery of body.
Answer
Aorta26. The kidneys in human beings are parts of the system for
(a) nutrition
(b) respiration
(c) excretion
(d) transpiration
Answer
(c) excretion27. The xylem in plants are responsible for
(a) transport of water
(b) transport of food
(c) transport of amino acids
(d) transport of oxygen
Answer
(a) transport of water28. The autotrophic mode of nutrition requires
(a) carbon dioxide and water
(b) chlorophyll
(c) sunlight
(d) all of the above
Answer
(d) all of the above29. The breakdown of pyruvate to give carbon dioxide, water and energy takes place in
(a) cytoplasm
(b) mitochondria
(c) chloroplast
(d) nucleus
Answer
(b) mitochondria30. Food moves down the gut by peristalsis. Which region of brain controls peristalsis.
Answer
Medulla of hind brain31. Name the pigment present in plants, which can absorb solar energy.
Answer
Chlorophyll32. Which of the four chambers of the human heart has the thickest muscular walls?
Answer
Right ventricle33. Which part of visible spectrum is absorbed by chlorophyll pigments?
Answer
Blue and Red light34. Name the cartilaginous flap which closes the glottis to check the entry of food into it during swallowing.
Answer
Epiglottis35. Which equipment is used to facilitate breathing during serious breathing problems?
Answer
Ventilator36. What do you mean by double circulation of blood?
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