6


Q 1. Transport of food from the leaves to other parts of the plants is called:
Translocation
Transpiration
Translation
Transcription
Q 2. The free ends of valves are attached to the wall of ventricles by means of :
Ligament
Tendon
RBCs
WBCs
Q 3. The exit of waste materials from the human alimentary canal is regulated by:
Urethra
Large intestine
Anal sphincters
Mouth
Q 4. Which of the following occurs during the iodine test of starch in leaves?
Covered portion of the leaf turns blue black
Covered portion of the leaf turns brown
Uncovered portion of the leaf turns pale yellow
Uncovered portion of the leaf turns blue black
Q 5. The ribs move down and inwards during:
Inhalation
Exhalation
Exercise 
Slow breathing 
Q 6. What happens when a clot occurs in an undamaged blood vessel?
You would bleed to death
A scab will form on the skin surface
Platelets stick to the edges of the cut and to one another, forming a plug
The flow of blood to tissues beyond the clot may be cut off
Q 7. Instrument used to measure blood pressure is:
Dialysis machine
Sphygmomanometer
Pacemaker
Pacesetter
Q 8. Which of the following products are reabsorbed in the tubular part of nephron?
Urea
Ammonia
Glucose
Uric acid
Q 9. The process by which plants obtain their nutrition is called
Evaporation
Transpiration
Digestion
Photosynthesis
Q 10. Ultrafiltration takes place in:
Ureters
Glomerulus
Henle's loop
Collecting duct
Q 11. An organism's body has a large proportion of dead cells, have low energy needs, and can use relatively slow transport system. This organism could be :
Fishes
Reptiles
Plants
Human beings
Q 12. Which of the following is a bile pigment?
Bilirubin
Pectin
Lignin
Homopectin
Q 13. During inhalation, the diaphragm becomes
Dome Shaped
Oblique
Flattened
Normal
Q 14. In humans, the normal systolic and diastolic blood pressure is about:
80 and 120mm of Hg
120 and 80 mm of Hg
70 and 110 mm of Hg
110 and 70 mm of Hg
Q 15. Where do substances such as glucose, amino acid and water get  re-absorbed from the filtrate?
Glomerulus
Bowman's capsule
Tubular part of nephron
Collecting duct
Q 16. In older people, heart pumps blood more forcefully than in younger persons because:
Decrease in O2 content in blood.
Decrease in elasticity's of arteries
Fall in nutritional control of blood
Increase in elasticity of arteries
Q 17. Oxygen is transported from the alveoli to the tissues in the form of
Carboxyhaemoglobin
Bicarbonate 
Oxyhaemoglobin
Carbaminohaemoglobin
Q 18. How many times does the blood flow through the human heart in one cycle?
Twice
Thrice
Once
Four times
Q 19. The heart of amphibians and reptiles is _________-chambered.
2
3
4
5
Q 20. Which of the following is not an event in photosynthesis?
Formation of the green pigment chlorophyll
Absorption of light energy
Conversion of light energy to chemical energy
Splitting of water molecules
Q 21. The cup shaped structure inside kidney that helps in the filtration of blood is called:
Glomerulus
Renal vein
Bowman's capsule
Nephron
Q 22. Plants obtain nutrition through the process of
Photosynthesis
Respiration
Absorption
Transpiration
Q 23. Which of the following is not a life process in living organisms?
Mitosis
Nutrition
Digestion
Assimilation
Q 24. Breathing is controlled by which organ/gland?
Heart
Brain
Spinal cord 
Pituitary gland
Q 25. What happens to blood when it is pumped into the thin-walled blood vessels of the lungs?
Platelets are exchanged for plasma.
Carbon dioxide is replaced with oxygen
Oxygen and carbon dioxide both move into the blood from the lungs 
RBC's are replenished in the blood for better oxygenation of the blood 
Q 26. While conducting an experiment on photosynthesis, the plant under study was kept in complete darkness for a period of 48 hours. The reason for this is: 
To destarch the plant
To activate the chloroplast in the plant
To increase assimilation of starch 
To activate the enzyme in the leaves
Q 27. Which of the following derives its nutrition through photosynthesis?
Algae
Rhizopus
Amoeba
Euglena
Q 28. In animals, carbohydrates which are not used immediately are stored in the body as:
Glucose
Glycogen
Starch
Sucrose
Q 29. The opening and closing of stomata is regulated by
Guard cells
Epidermal cells
Subsidiary cells
Phloem cells
Q 30. The components of blood involved in the transport of O2 and CO2 are:
RBCs and blood plasma
RBCs and WBCs
WBCs and blood serum
Platelets and Corpuscles
Q 31. Single circulation is seen in
Fish
Amphibians
Mammals
Birds
Q 32. The process involved in the uptake of minerals from soil by the root hair is:
Osmosis
Active transport
Diffusion
Imbibition
Q 33. Gaseous waste in plants is removed through the
Lenticels
Root hair
Epidermis
Endodermis
Q 34. Food produced by plants is stored as reserved food in the form of
Starch
Glycogen
Cellulose
Proteins
Q 35. In humans, the alternative pathway of respiration where pyruvate is converted into a three- carbon compound called lactic acid is found in-
Nerve cells
Alveoli of lungs
Intestinal villi
Muscle cells
Q 36. Why is a plant destarched before conducting photosynthesis experiments?
To ensure that the plant has no starch
To maximise the rate of photosynthesis
To minimise the rate of photosynthesis
To increase the intensity of sunlight absorbed by the leaves
Q 37. The energy derived from the ATP molecules synthesised during respiration is used to drive-
Dehydrogenation reactions
Isomerisation reactions
Endothermic reactions
Exothermic reactions
Q 38. The simplest carbohydrate produced during photosynthesis is
Glucose
Sucrose
Starch
Maltose
Q 39. The rate of photosynthesis is not affected by? 
Chlorophyll
  • Oxygen
Sunlight
Water
Q 40. Suppose you are performing the starch iodine-test to study photosynthesis. What will be the correct sequence of the following steps: i) Boiling leaf in alcohol. ii) Dipping leaf in iodine solution iii) Boiling leaf in water iv) Rinsing leaf with water
iv, ii, ii, i
i,ii,iii,iv
ii,iii,iv,i
iii,i,iv,ii

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