College

Secondary School Supplementary Questions from Chapter 3 for Grade 10 Students

1. What is a key feature of the Sahel region?
A. High rainfall and dense forests
B. Large-scale agriculture
C. Grasslands transitioning to desert
D. None of the above

2. Which African vegetation type supports the most biodiversity?
A. Tropical rainforest
B. Savannah
C. Desert scrub
D. Mediterranean forest

3. Which of the following species is endangered due to poaching?
A. African elephant
B. Zebra
C. Giraffe
D. Flamingo

4. What is the biggest threat to African wildlife today?
A. Habitat loss
B. Disease
C. Overpopulation
D. Tourism

5. Which type of vegetation is most commonly found in the African Savanna?
A. Evergreen forests
B. Grasslands with scattered trees
C. Desert shrubs
D. Coniferous forests

6. Which agricultural activity is commonly practiced in regions with tropical rainforest climates?
A. Nomadic herding
B. Subsistence farming
C. Commercial grain farming
D. Mining

7. What is the main challenge for agriculture in desert regions of Africa?
A. Excessive rainfall
B. Poor soil quality
C. Lack of irrigation
D. Frequent flooding

8. In which African region do people commonly settle near rivers due to favorable climate conditions?
A. Sahara Desert
B. Nile Valley
C. Ethiopian Highlands
D. Kalahari Desert

9. Which factor contributes to the sparse population in the Sahara Desert?
A. High population growth rates
B. Excessive rainfall
C. Harsh, dry climate conditions
D. Fertile soils

10. The highland areas of East Africa are suitable for settlement due to:
A. Warm temperatures
B. Fertile volcanic soils
C. Abundant rainfall
D. Low population density

11. Which soil type is commonly found in tropical rainforest regions and is characterized by high fertility?
A. Arenosols
B. Leptosols
C. Ferralsols
D. Andosols

12. What is the main characteristic of Leptosols found in mountainous regions?
A. High water retention
B. Poor fertility due to thin soil layers
C. Rich in organic matter
D. Suitable for irrigation

13. Cumbisols are best suited for which type of agricultural activity in Africa?
A. Pastoralism
B. Cereal crop cultivation
C. Oil extraction
D. Not specified in the text

Answer :

Final answer:

The Sahel region is characterized by grasslands transitioning to desert, while tropical rainforests support the most biodiversity in Africa. The African elephant is endangered due to poaching, with habitat loss being the biggest threat to wildlife. Agriculture faces challenges in desert areas primarily due to a lack of irrigation and harsh climate conditions.


Explanation:

Key Features of the Sahel Region and Biodiversity in Africa

The Sahel region, which lies between the Sahara Desert to the north and the tropical rainforests to the south, is best characterized by grasslands transitioning to desert. This area experiences a semi-arid climate, which leads to a mix of savanna and sparse scrubland.

When considering African vegetation types that support the most biodiversity, the tropical rainforest stands out due to its complex ecosystems that provide habitats for countless species. Conversely, while the savannah is rich in wildlife, it does not match the biodiversity found in rainforest ecosystems.

Among endangered species, the African elephant is notably at risk due to poaching activities, driven by the demand for ivory and other body parts.

Today, the primary threat to African wildlife is habitat loss, driven by human activities such as agriculture, urbanization, and deforestation, rather than hunting or disease.

In the African savanna, the predominant vegetation type is grasslands with scattered trees, which create an essential habitat for various animal species.

In tropical rainforest climates, subsistence farming is commonly practiced, where local populations grow food primarily for their own use rather than for trade.

In desert regions of Africa, the main challenge faced by agriculture is the lack of irrigation, which significantly hampers food production.

People in Africa often settle near the Nile Valley because of its favorable climate and water resources that support agriculture.

The sparse population in the Sahara Desert is largely due to its harsh, dry climate conditions that make it unsuitable for regular human habitation.

Highland areas of East Africa are populated largely because they have fertile volcanic soils and abundant rainfall, making them ideal for agriculture.

In tropical rainforest regions, the soil type known as ferralsols is common and is characterized by high fertility, supporting diverse plant growth.

Finally, Leptosols found in mountainous regions have poor fertility due to thin soil layers, which affects agricultural productivity.


Learn more about African Geography and Ecology here:

https://brainly.com/question/40794023