Crop Ecology and Planting Conditions

Question 1

What is the definition of crop ecology?

Accepted Answer

Crop ecology is the study of the relationships between crop plants and their surrounding environment.

Question 2

Which of the following is considered a biotic component in crop ecology?

Accepted Answer

Pests are a biotic component in crop ecology.

Question 3

What is the primary role of Rhizobium bacteria in crop ecology?

Accepted Answer

Rhizobium bacteria fix atmospheric nitrogen in the root nodules of leguminous crops.

Question 4

Which of these is an abiotic component affecting crop growth?

Accepted Answer

Sunlight is an abiotic component affecting crop growth.

Question 5

How do weeds primarily impact crop plants?

Accepted Answer

Weeds compete with crops for space, sunlight, water, and soil nutrients.

Question 6

Which group of factors determines the atmospheric conditions of the crop habitat?

Accepted Answer

Climatic factors determine the atmospheric conditions of the crop habitat.

Question 7

Soil texture and soil pH are examples of which type of environmental factor?

Accepted Answer

Soil texture and soil pH are examples of edaphic (soil) factors.

Question 8

What is the primary factor determining the diverse ecological zones across Nigeria?

Accepted Answer

The gradient of annual rainfall is the primary factor determining Nigeria's diverse ecological zones.

Question 9

Which ecological zone in Nigeria is characterized by waterlogged, salty soil and dominant mangrove trees with stilt roots?

Accepted Answer

The Mangrove Swamp Forest zone fits this description.

Question 10

Which of these crops is highly suitable for cultivation in the Rainforest Zone of Nigeria?

Accepted Answer

Cocoa is highly suitable for cultivation in the Rainforest Zone.

Question 11

The Montane Forest and Grassland zone is known for its cool, temperate climate due to what factor?

Accepted Answer

The cool, temperate climate of the Montane Forest and Grassland zone is due to its high elevation.

Question 12

Which ecological zone is often referred to as the 'food basket of the nation' due to its wide variety of crops?

Accepted Answer

The Guinea Savannah is often called the 'food basket of the nation'.

Question 13

Millet, sorghum, and groundnut are major crops cultivated in which ecological zone with a long, intense dry season?

Accepted Answer

These crops are cultivated in the Sudan Savannah.

Question 14

Crop production in the Sahel Savannah zone is highly dependent on irrigation due to what condition?

Accepted Answer

Crop production in the Sahel Savannah is highly dependent on irrigation due to very low annual rainfall.

Question 15

What type of soil texture is considered most suitable for planting most crops?

Accepted Answer

Loamy soil is considered the most suitable soil texture for planting most crops.

Question 16

Why is soil pH an important factor to consider before planting?

Accepted Answer

Soil pH is important because it influences the availability of essential plant nutrients.

Question 17

Which soil factor is critical at the time of planting to trigger seed germination?

Accepted Answer

Adequate soil moisture is critical to trigger seed germination.

Question 18

What can be the effect of extremely high temperatures on young seedlings?

Accepted Answer

Extremely high temperatures can scorch young seedlings.

Question 19

What is the negative impact of strong winds on young crops?

Accepted Answer

Strong winds can cause lodging (blowing down of crops) and physical damage to young seedlings.

Question 20

What is the consequence of waterlogged soils on plant roots and seeds?

Accepted Answer

Waterlogged soils lack oxygen, which suffocates plant roots and causes seeds to rot before germination.

Strong work.