Match Group (A) with Group (B)

Group (A)	Group (B)
(a) Autotrophic nutrition	(i) Leech
(b) Heterotrophic nutrition	(ii) Paramecium
(c) Parasitic nutrition	(iii) Deer
(d) Digestion in food vacuoles	(iv) Green plant

 

Ans. (a)-iv (b)-iii (c)-i (d)-ii

The availability of oxygen is much less in aquatic environment than in terrestrial environment. Due to this, aquatic organisms need to work harder to obtain oxygen. Hence, rate of breathing in aquatic organisms is much faster than in terrestrial organisms.

In human heart, blood passes through the heart twice during one cardiac cycle. The deoxygenated blood comes to the heart and goes to the lungs for oxygenation. Simultaneously, the oxygenated blood comes to the heart from lungs and goes to different organs. Due to this, blood circulation in human heart is called double circulation.

Four-chambered heart gives following advantages:
(a) There is clear cut division of labour among different chambers. Atria receive blood and ventricles pump the blood.
(b) There is complete segregation of oxygenated and deoxygenated blood in the heart.
(c) Heart’s efficiency is more in this design. 

Following are the major events during photosynthesis:
 (a) Absorption of light energy by chlorophyll
 (b) Conversion of light energy into chemical energy.
 (c) Splitting of water molecules into hydrogen and oxygen.
 (d) Reduction of carbon dioxide to form carbohydrate. 

(a) Cloudy days
Ans. Availability of sunlight is less on cloudy days. This will reduce the rate of photosynthesis.
(b) No rainfall in the area
 Ans. No effect
(c) Good manuring in the area
 Ans. No effect
(d) Stomata get blocked due to dust
 Ans. Opening of stomata is essential for availability of carbon dioxide for photosynthesis. Blockage of stomata will reduce the rate of photosynthesis. 

ATP is called the energy currency in living organisms. It is produced in mitochondria during respiration

All of them are parasites. They live on or inside the body of another organism to get food. They always harm their hosts.