IGCSE Biology Paper-4: Specimen Questions with Answers 251 - 253 of 279
Glide to success with Doorsteptutor material for Bank-PO : get questions, notes, tests, video lectures and more- for all subjects of Bank-PO.
Question 251
Write in Short
Short Answer▾Complete the table to show three differences between aerobic respiration and anaerobic respiration in humans.
| Aerobic respiration in humans | Anaerobic respiration in humans | |
| 1 | ||
| 2 | ||
| 3 |
Explanation
Passage
The diagram shows an Arctic food web.
Question 252 (1 of 3 Based on Passage)
Edit
Write in Short
Short Answer▾Complete the food chain using organisms shown in the food web.
Phytoplankton ⇾ ________ ⇾ ________ ⇾ ________ ⇾ Killer Whale
Explanation
- The ecosystems are characterized by the energy flow and the circulation of material through its members. The different organisms of an ecosystem are linked together by their nutritional requirements. Individual related in this manner constitute a food chain.
- Food chain is an order or sequence of different organisms which are arranged in a way that the food is passed from one type of organism to other organisms such that the organisms of one order or trophic level are the food of the organisms of next order.
Question 253 (2 of 3 Based on Passage)
Explanation
Zooplanktons are primary consumer which feed on phytoplankton. In turn zooplanktons are eaten by secondary consumer by arctic char and arctic cod.