| 1 |
Which of the followings in not true about the opening and Closing of Stomata? |
- A. Light helps in the opening and closing of stomata
- B. K<sup>+</sup> ions are responsible for the opening and closing of stomata
- C. The osmosis of water is responsible for the opening and closing of stomata
- D. None for these
|
| 2 |
What happens when a mismatched blood group is injected in recipient? |
- A. Antibodies of the recipient's blood destroy donor's RBCs
- B. Antibodies of the donor's blood breakdown recipient's RBCs
- C. Both of these can happen
- D. None of these and such transfusion can be safe
|
| 3 |
Find the correct path of blood circulation. |
- A. Left atrium, left ventricle, lungs, right atrium, right ventricle, body
- B. Right atrium, right ventricle, lungs, left atrium, left ventricle ,body
- C. Left atrium, left ventricle, right atrium, right ventricle, lungs body
- D. Right atrium, lungs, right ventricle, left atrium, body , left ventricle
|
| 4 |
In most plants, the food is transported in the form of: |
- A. Glucose
- B. Sucrose
- C. Starch
- D. Proteins
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| 5 |
In experiments to show transpiration from lead surfaces cobalt chloride paper changes its colour from: |
- A. Pink to blue
- B. Blue to pink
- C. Pink to colourless
- D. Colourless to pink
|
| 6 |
Which of these statements is correct about the circulatory system? |
- A. It transports hormones
- B. Capillaries have thicker walls than veins
- C. Systemic circulation carries blood to and from the lunges
- D. All of the above are true
|
| 7 |
According to pressure flow mechanism which is the actual force behind the movement of food in phloem? |
- A. Drop in the pressure at the sink end
- B. Gain of water at the sink end
- C. Osmotic pressure
- D. All of these
|
| 8 |
Plasma is made up of water and _____________ |
- A. Metabolities and wastes
- B. Salts and ions
- C. Proteins
- D. All of the above
|
| 9 |
Pulmonary veins originate from .............. . |
- A. Liver
- B. Lungs
- C. Kidney
- D. Intestine
|
| 10 |
Atherosclerosis is caused due to ............. . |
- A. Hypertension
- B. Smoking
- C. Diabetes
- D. All of above
|
