IGCSE Biology Paper-3: Specimen Questions with Answers 283 - 286 of 358
Passage
Fig. is a diagram of a fetus in the uterus.
Question 283 (3 of 3 Based on Passage)
Write in Short
Short Answer▾Compare the growth and development of the fetus in the early stages of pregnancy with its growth and development in the late stages of pregnancy.
Explanation
Question 284
Write in Short
Short Answer▾The lower surface of most leaves has many pores.
The pores allow gases to move into and out of a leaf for photosynthesis.
State the name of the gas that is used for photosynthesis.
Explanation
Carbon Dioxide
Oxygen is released during the process of photosynthesis. Photosynthesis is the process in which green plants produce glucose. It involves the conversion of carbon dioxide gas, water, and minerals the plants take in from their surroundings into sugar and gaseous oxygen. Photosynthesis involves the intake of carbon dioxide and the release of oxygen. The release of oxygen is due to photolysis of water.
Question 285
Write in Short
Short Answer▾Lipase is involved in the breakdown of fats.
State the two products of fat digestion.
Explanation
Passage
Improved food production has contributed to the increase in the human population.
Question 286 (1 of 4 Based on Passage)
Write in Brief
One Liner▾State one reason, other than food production, why the human population has increased so rapidly between 1910 and 2010.
Explanation
Improved health care, beginning in the 1960՚s, is one of the leading causes of the increased growth rates that created the population explosion.