Revision x Biology

Match the following.

• Phloem

• Prevents backward flow

• Vein

• Clotting of blood

• Nephron

• Deoxygenated blood

• Valve

• Excretion

• Platelets

• Translocation of food

Match the following

• Autotrophic nutrition

• Deer

• Digestion in food vacuoles

• Leech

• Parasitic nutrition

• Paramecium

• Hetrotrophic

• Green plant

Match the following

• Pepsin

• Pancreas

• Bile

• Saliva

• Trypsin

• Liver

• Amylase

• Gastric Glands

Which of the statements is incorrect?

• All green plants and blue green algae are producers

• Green plants get their food from organic compounds

• Producers prepare own food from inorganic compounds

• Plants convert solar energy into chemical energy.

Which of the following statement(s) is (are) true about heart?

(i) Left atrium receives oxygenated blood from different parts of the body while right atrium receives deoxygenated blood from lungs

(ii) Left ventricle pumps oxygenated blood to different body parts while right ventricle pumps deoxygenated blood to lungs

(iii) Left atrium transfers oxygenated blood to right ventricle which sends it to different parts of the body

(iv) Right atrium receives deoxygenated blood from different parts of the body while left ventricle pumps oxygenated blood to different parts of the body

• i

• ii

• (ii) & (iv)

• (i) &(iii)

Blood transports oxygen and carbon dioxide to different parts of the human body. The exchange of gases between blood and inhaled air takes place in the capillaries of lungs. The diagram below shows how blood circulates in the human body.

Q:What statement is supported by the diagram?

• All arteries carry oxygenated blood.

• Capillaries are permeable to gases.

• The wall between the left ventricle and the right ventricle is porous.

• Blood can flow back and forth between the right atrium and right ventricle.

Blood transports oxygen and carbon dioxide to different parts of the human body. The exchange of gases between blood and inhaled air takes place in the capillaries of lungs. The diagram below shows how blood circulates in the human body.

Q:What statement is supported by the diagram?

• All arteries carry oxygenated blood.

• Capillaries are permeable to gases.

• The wall between the left ventricle and the right ventricle is porous.

• Blood can flow back and forth between the right atrium and right ventricle.